''Riccia'' is a genus of

liverwort Liverworts are a group of non-vascular land plants forming the division Marchantiophyta (). They may also be referred to as hepatics. Like mosses and hornworts, they have a gametophyte-dominant life cycle, in which cells of the plant carry ...

s in the order

Marchantiales Marchantiales is an order of thallose liverworts (also known as "complex thalloid liverworts") that includes species like '' Marchantia polymorpha'', a widespread plant often found beside rivers, and '' Lunularia cruciata'', a common and often t ...

Description

These plants are small and

thalloid Thallus (: thalli), from Latinized Greek (), meaning "a green shoot" or "twig", is the vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria. A thallus usually names the entire ...

, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm wide with dichotomous branches or may form rosettes or hemirosettes up to 3 cm in diameter, that may be gregarious and form intricate mats. The thallus is

dorsiventral A dorsiventral (Lat. ''dorsum'', "the back", ''venter'', "the belly") organ is one that has two surfaces differing from each other in appearance and structure, as an ordinary leaf. This term has also been used as a synonym for dorsoventral organs, ...

ly differentiated. Its upper (dorsal) surface is green and

chlorophyll Chlorophyll is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words (, "pale green") and (, "leaf"). Chlorophyll allows plants to absorb energy ...

-bearing, with a mid-dorsal longitudinal sulcus (furrow or groove). Air pores occasionally break through the dorsal surface, giving the thallus a dimpled appearance. In exceptional members such as ''Riccia caroliniana'' of Northern Australia and ''Riccia sahyadrica'' of Western Ghats, the photosynthetic region is confined to the lower half of the thallus. The lower (ventral) surface has a mid-ventral ridge bearing multicellular scales that originate as a single row but normally separate into two rows as the thallus widens. The scales are multicellular and

hyaline A hyaline substance is one with a glassy appearance. The word is derived from , and . Histopathology Hyaline cartilage is named after its glassy appearance on fresh gross pathology. On light microscopy of H&E stained slides, the extracellula ...

(glassy) in appearance, or violet due to the pigment

anthocyanin Anthocyanins (), also called anthocyans, are solubility, water-soluble vacuole, vacuolar pigments that, depending on their pH, may appear red, purple, blue, or black. In 1835, the German pharmacist Ludwig Clamor Marquart named a chemical compou ...

Rhizoid Rhizoids are protuberances that extend from the lower epidermal cells of bryophytes and algae. They are similar in structure and function to the root hairs of vascular land plants. Similar structures are formed by some fungi. Rhizoids may be un ...

s are nearly lacking in aquatic forms, but there are usually numerous unicellular rhizoids of two types on the ventral surface. One type is called smooth and the other type is the pegged or tuberculated rhizoids; these help in anchorage and absorption. The inner surface of the smooth rhizoids is smooth while that of the tuberculate rhizoid will have internal

cell wall A cell wall is a structural layer that surrounds some Cell type, cell types, found immediately outside the cell membrane. It can be tough, flexible, and sometimes rigid. Primarily, it provides the cell with structural support, shape, protection, ...

projections.

Distribution and habitat

One of the more than 100 species in this genus is the "slender riccia" (''

Riccia fluitans ''Riccia fluitans'', the floating crystalwort, is an aquatic floating plant of the liverwort genus '' Riccia'' which is popular among aquarists as a retreat for young fry and is used in live-bearing tanks. It can be found floating in ponds, and ...

''), which grows on damp soil or, less commonly, floating in ponds,MacVicar, Symers M. 1971. The student's handbook of British hepatics, p. 12-13. Hitchen Whelden & Wesley, Ltd.; Authorized reprint of the 1926 edition published by Sumfield & Day, Ltd. and is sometimes used in

aquarium An aquarium (: aquariums or aquaria) is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. fishkeeping, Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aquati ...

Reproduction

Plants are usually

monoicous Monoicy () is a sexual system in haploid plants (mainly bryophytes) where both sperm and eggs are produced on the same gametophyte, in contrast with dioicy, where each gametophyte produces only sperm or eggs but never both.Crandall-Stotler, B.J ...

, and sexual reproduction is by

antheridia An antheridium is a haploid structure or organ producing and containing male gametes (called ''antherozoids'' or sperm). The plural form is antheridia, and a structure containing one or more antheridia is called an androecium. The androecium is al ...

and

archegonia An archegonium (: archegonia), from the Ancient Greek ''ἀρχή'' ("beginning") and ''γόνος'' ("offspring"), is a multicellular structure or organ of the gametophyte phase of certain plants, producing and containing the ovum or female gamet ...

. Asexual reproduction occurs by

spores In biology, a spore is a unit of sexual (in fungi) or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plant ...

, by fragmentation of the rosettes, and by formation of apical

tubers Tubers are a type of enlarged structure that plants use as storage organs for nutrients, derived from stems or roots. Tubers help plants perennate (survive winter or dry months), provide energy and nutrients, and are a means of asexual reprod ...

. Spores are large (45 to 200 μ) and formed in tetrads. The

sporophyte A sporophyte () is one of the two alternation of generations, alternating multicellular organism, multicellular phases in the biological life cycle, life cycles of plants and algae. It is a diploid multicellular organism which produces asexual Spo ...

of Riccia is the simplest amongst

bryophyte Bryophytes () are a group of embryophyte, land plants (embryophytes), sometimes treated as a taxonomic Division (taxonomy), division referred to as Bryophyta ''Sensu#Common qualifiers, sensu lato'', that contains three groups of non-vascular pla ...

s. It consist of only a capsule, missing both foot and seta, and does not perform photosynthesis.

Species

The following species are recognised in the genus ''Riccia'': *'' Riccia abdita'' Cargill *''

Riccia abuensis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Bapna *'' Riccia acutisulca'' Steph. *''

Riccia alatospora ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' O.H. Volk & Perold *'' Riccia albida'' Sull. ex Austin *''

Riccia albolimbata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' S.W. Arnell *'' Riccia albomarginata'' Bisch. ex C. Krauss *''

Riccia alboporosa ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Perold *''

Riccia albopunctata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *'' Riccia albornata'' O.H. Volk & Perold *''

Riccia albovestita ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' O.H. Volk *'' Riccia amboinensis'' Schiffn. *''

Riccia ampullacea ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Perold *''

Riccia anatolica ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Özenoğlu & Kırmacı *''

Riccia angolensis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *''

Riccia arachnoidea ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' O.F. Müll. *''

Riccia aravalliensis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Pandé & Udar *''

Riccia argenteolimbata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' O.H. Volk & Perold *'' Riccia arnellii'' Sultan Khan *''

Riccia asprella ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Carrington & Pearson *''

Riccia asservanda ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' De Not. *'' Riccia atlantica'' Sérgio & Perold *''

Riccia atromarginata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Levier *'' Riccia atropurpurea'' Sim *''

Riccia attenuata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Pandé *''

Riccia auriformis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' With. *''

Riccia australis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *'' Riccia bahiensis'' Steph. *'' Riccia balansae'' Steph. *'' Riccia beyrichiana'' Hampe ex Lehm. *''

Riccia bialbistrata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Hässel *'' Riccia bicarinata'' Lindb. *''

Riccia bicolorata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Perold *'' Riccia bifurca'' Hoffm. *''

Riccia billardieri ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Mont. & Nees *''

Riccia biokoensis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Perold *''

Riccia blackii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Na-Thalang *'' Riccia boliviensis'' Jovet-Ast *''

Riccia boumanii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Dirkse, Losada-Lima & M. Stech *'' Riccia brasiliensis'' Schiffn. *'' Riccia breidleri'' Jur. *''

Riccia breutelii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Hampe ex Steph. *''

Riccia brittonii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' M. Howe *'' Riccia bullosa'' Link *'' Riccia californica'' Austin *''

Riccia campbelliana ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' M. Howe *''

Riccia canaliculata ''Riccia canaliculata'' is a species of liverwort Liverworts are a group of non-vascular land plants forming the division Marchantiophyta (). They may also be referred to as hepatics. Like mosses and hornworts, they have a gametophyte-do ...

'' Hoffm. *''

Riccia cancellata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Taylor *'' Riccia caroliniana'' Na-Thalang *'' Riccia cartilaginosa'' Steph. *'' Riccia cavernosa'' Hoffm. *''

Riccia chartacea ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' K.I. Goebel *'' Riccia chiapasensis'' Jovet-Ast *''

Riccia chinensis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Herzog *'' Riccia chrysocrinita'' Cargill *''

Riccia chudoana ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *''

Riccia ciliata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Hoffm. *'' Riccia ciliifera'' Link ex Lindenb. *''

Riccia cincta ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *''

Riccia collata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Na-Thalang *''

Riccia compacta ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Garside *''

Riccia concava ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Bisch. ex Gottsche *''

Riccia congoana ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *'' Riccia convexa'' Steph. *''

Riccia coracina ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *''

Riccia coronata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Sim *''

Riccia corrugata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *'' Riccia crassa'' Steph. *''

Riccia crassifrons ''Riccia crassifrons'' is a species of liverwort belonging to the family Ricciaceae. A study in tropical Ecuador found that ''Riccia crassifrons'' was typically found in urban environments, suggesting that the species is tolerant to anthropogen ...

'' Spruce *''

Riccia crassivenia ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *''

Riccia crenatodentata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' O.H. Volk *'' Riccia crinita'' Taylor *'' Riccia crozalsii'' Levier *''

Riccia cruciata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Kashyap *'' Riccia crustata'' Trab. *'' Riccia crystallina'' L. *''

Riccia cubensis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' S.W. Arnell *''

Riccia cupulifera ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' A.V. Duthie & Garside *''

Riccia curtisii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' (Austin) Austin *'' Riccia delavayi'' Steph. *'' Riccia deserticola'' Steph. *'' Riccia dictyospora'' M. Howe *''

Riccia discolor ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Lehm. & Lindenb. *'' Riccia duplex'' Lorb. & Müll. Frib. *'' Riccia dussiana'' Steph. *''

Riccia eburnea ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *''

Riccia ekmanii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' S.W. Arnell *'' Riccia elliottii'' Steph. *''

Riccia elongata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Perold *''

Riccia enyae ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *''

Riccia epecenia ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Cargill *''

Riccia erubescens ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Perold *''

Riccia erythrocarpa ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *''

Riccia esulcata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *'' Riccia fertilissima'' Steph. *''

'' L. *'' Riccia frostii'' Austin *''

Riccia fruchartii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *'' Riccia furfuracea'' Perold *'' Riccia gangetica'' Ahmad ex L. Söderstr., A. Hagborg & von Konrat *''

Riccia garsidei ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Sim *'' Riccia geissleriana'' Jovet-Ast *'' Riccia gemmifera'' O.H. Volk *'' Riccia glauca'' L. *''

Riccia gothica ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Damsh. & Hallingb. *'' Riccia gougetiana'' Durieu & Mont. *''

Riccia grandis ''Riccia'' is a genus of Marchantiophyta, liverworts in the order Marchantiales. Description These plants are small and thallus, thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped a ...

'' Nees *''

Riccia grollei ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Udar *''

Riccia handelii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Schiffn. *'' Riccia hantamensis'' Perold *''

Riccia hasskarliana ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *'' Riccia hawaiiensis'' Hürl. *''

Riccia hegewaldiana ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *'' Riccia helenae'' Jovet-Ast *''

Riccia hirsuta ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' O.H. Volk & Perold *''

Riccia hirta ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' (Austin) Underw. *'' Riccia horrida'' Jovet-Ast *''

Riccia hortorum ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Bory ex Lindenb. *'' Riccia howellii'' M. Howe *''

Riccia huebeneriana ''Riccia huebeneriana'' is a species of liverwort belonging to the family Ricciaceae. It is native to Eurasia and Northern America. References

Ricciaceae Taxa named by Johann Bernhard Wilhelm Lindenberg Plants described in 1836 Least co ...

'' Lindenb. *'' Riccia ianthina'' Jovet-Ast *''

Riccia indica ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Udar & A. Gupta *'' Riccia indira-gandhiensis'' Dabhade & A. Hasan *''

Riccia inflexa ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Taylor *''

Riccia intermedia ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Roum. *'' Riccia iodocheila'' M. Howe *''

Riccia jodhpurensis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Bapna *'' Riccia jovet-astiae'' E. Vianna *''

Riccia junghuhniana ''Riccia'' is a genus of Marchantiophyta, liverworts in the order Marchantiales. Description These plants are small and thallus, thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped a ...

'' Nees & Lindenb. *'' Riccia keralensis'' Manju, Chandini, Sushil K. Singh & K.P. Rajesh *'' Riccia kirinensis'' C. Gao & K.C. Chang *'' Riccia lamellosa'' Raddi *'' Riccia lanceolata'' Steph. *'' Riccia laxisquamata'' (Steph.) Steph. *''

Riccia leptothallus ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' R.M. Schust. *'' Riccia liaoningensis'' C. Gao & K.C. Chang *'' Riccia ligula'' Steph. *''

Riccia limbata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Bisch. *'' Riccia limicola'' Jovet-Ast *'' Riccia lindmanii'' Steph. *''

Riccia linearis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' (Schiffn.) Steph. *''

Riccia luticola ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Na-Thalang *''

Riccia macallisteri ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' M. Howe *''

Riccia macrocarpa ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Levier *''

Riccia macrospora ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *''

Riccia mamillata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Trab. ex Steph. *'' Riccia mammifera'' O.H. Volk & Perold *'' Riccia mamrensis'' Perold *'' Riccia mangalorica'' Ahmad ex Jovet-Ast *''

Riccia mauryana ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *''

Riccia melanospora ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Kashyap *'' Riccia membranacea'' Gottsche & Lindenb. *''

Riccia michelii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Raddi *''

Riccia microciliata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' O.H. Volk & Perold *''

Riccia miyakeana ''Riccia'' is a genus of Marchantiophyta, liverworts in the order Marchantiales. Description These plants are small and thallus, thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped a ...

'' Schiffn. *''

Riccia moenkemeyeri ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *'' Riccia montana'' Perold *''

Riccia multifida ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' (Steph.) F.M. Bailey *'' Riccia muscicola'' Steph. *'' Riccia namaquensis'' Perold *''

Riccia natalensis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Sim *'' Riccia nigerica'' E.W. Jones *'' Riccia nigrella'' DC. *'' Riccia nigrescens'' Mont. *''

Riccia nipponica ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' S. Hatt. *'' Riccia novohannoverana'' Schiffn. *'' Riccia numeensis'' Steph. *'' Riccia obchantiana'' Cargill *'' Riccia obtusa'' Meijer *'' Riccia oerstediana'' Lindenb. & Hampe *'' Riccia okahandjana'' S.W. Arnell *'' Riccia olgensis'' Na-Thalang *''

Riccia oryzicola ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' T. Tominaga & Furuki *''

Riccia ozarkiana ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' McGregor *''

Riccia pandei ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Udar *'' Riccia papillispora'' Steph. *'' Riccia papillosa'' Moris *''

Riccia papulosa ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' (Steph.) Steph. *'' Riccia paraguayensis'' Spruce *'' Riccia paranaensis'' Hässel *''

Riccia parvoareolata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' O.H. Volk & Perold *'' Riccia pathankotensis'' Kashyap *'' Riccia perennis'' Steph. *''

Riccia perssonii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Sultan Khan *''

Riccia perthiana ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. ex K.I. Goebel *'' Riccia planobiconvexa'' Steph. *'' Riccia polycarpa'' (Trab.) Jelenc *'' Riccia porosa'' Taylor *''

Riccia pottsiana ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Sim *''

Riccia prominens ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Meijer *'' Riccia pseudofluitans'' C. Gao & K.C. Chang *'' Riccia pubescens'' S. Hatt. *''

Riccia pullulans ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *''

Riccia pulveracea ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Perold *'' Riccia purpurascens'' Lehm. *''

Riccia pyramidata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Willd. *''

Riccia radiata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Perold *''

Riccia radicosa ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Pearson *''

Riccia rechingeri ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *''

Riccia reticulata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Sw. *'' Riccia reticulatula'' Udar *''

Riccia rhenana ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Lorb. ex Müll. Frib. *''

Riccia ridleyi ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' A. Gepp *''

Riccia rorida ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Na-Thalang *'' Riccia rosea'' O.H. Volk & Perold *''

Riccia rubricollis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Garside & A.V. Duthie ex S.W. Arnell *''

Riccia runssorensis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *'' Riccia saharensis'' Steph. ex Jovet-Ast *'' Riccia sahyadrica'' Manju & Cargill *'' Riccia sanguineisporis'' Jovet-Ast *'' Riccia sarieae'' A.E.D. Daniels & D.T.T. Daniels *'' Riccia satoi'' S. Hatt. *''

Riccia schelpei ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' O.H. Volk & Perold *''

Riccia schroederi ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *'' Riccia schweinfurthii'' Steph. *'' Riccia sibayenii'' Perold *'' Riccia simii'' Perold *'' Riccia singularis'' Jovet-Ast *''

Riccia sinuata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Huds. *'' Riccia somaliensis'' Perold *''

Riccia sommieri ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Levier *'' Riccia sorocarpa'' Bisch. *''

Riccia spongiosula ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Na-Thalang *'' Riccia squamata'' Nees *''

Riccia stricta ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' (Lindenb.) Perold *'' Riccia subbifurca'' Warnst. ex Croz. *'' Riccia subcrinita'' You L. Xiang & R.L. Zhu *''

Riccia subdepilata ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *''

Riccia subplana ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *'' Riccia subtilis'' (Steph.) Steph. *'' Riccia sumatrana'' Meijer *'' Riccia symoensii'' Vanden Berghen *''

Riccia taeniaeformis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *''

Riccia tasmanica ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. ex Rodway *''

Riccia tenella ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' D.L. Jacobs *''

Riccia tomentosa ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' O.H. Volk & Perold *'' Riccia trabutiana'' Steph. *''

Riccia trachyglossum ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Perold *'' Riccia treubiana'' Steph. *''

Riccia triangularis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *'' Riccia tuberculata'' Lam. & Poir. *'' Riccia tuberosa'' Taylor *''

Riccia udarii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Kanwal *''

Riccia velenovskyi ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Kavina *'' Riccia velimalaiana'' A.E.D. Daniels & P. Daniel *''

Riccia verrucosa ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Cargill *''

Riccia viannae ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *'' Riccia victoriensis'' Steph. *'' Riccia villosa'' Steph. *''

Riccia violacea ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' M. Howe *''

Riccia vitalii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Jovet-Ast *''

Riccia vitrea ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Perold *''

Riccia volkii ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' S.W. Arnell *'' Riccia vulcanicola'' Eb. Fisch. *''

Riccia wainionis ''Riccia'' is a genus of liverworts in the order Marchantiales. Description These plants are small and thalloid, i.e. not differentiated into root, stem and leaf. Depending on species, the thallus may be strap-shaped and about 0.5 to 4 mm ...

'' Steph. *'' Riccia warnstorfii'' Limpr. ex Warnst. *'' Riccia weymouthiana'' Steph. ex Rodway

References

{{Authority control Ricciaceae Marchantiales genera