''Rosularia'' is a small

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Crassulaceae The Crassulaceae (, from Latin ''crassus'', thick), also known as the crassulas, the stonecrops or the orpine family, are a diverse Family (biology), family of dicotyledon angiosperms primarily characterized by succulent leaves and a form of phot ...

. It includes about 28-35

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

from

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

, the

Himalayas The Himalayas, or Himalaya ( ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the Earth's highest peaks, including the highest, Mount Everest. More than list of h ...

, and northern

Africa Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surfac ...

Taxonomy

''Rosularia'' was originally described by

De Candolle Augustin Pyramus (or Pyrame) de Candolle (, , ; 4 February 17789 September 1841) was a Swiss people, Swiss botany, botanist. René Louiche Desfontaines launched de Candolle's botanical career by recommending him at a herbarium. Within a couple ...

(1828) as a section of the genus ''Umbilicus'', and raised to the level of genus by Stapf (1923) Thus the genus bears the

botanical authority In botanical nomenclature, author citation is the way of citing the person or group of people who validly published a botanical name, i.e. who first published the name while fulfilling the formal requirements as specified by the ''International Cod ...

( DC) Stapf of both authors. In 1930,

Berger Berger is a surname in both German language, German and French language, French, although there is no etymological connection between the names in the two languages. The French surname is an occupational name for a shepherd, from Old French ''bergi ...

included it in family

subfamily Sedoideae, as one of 9 genera. He further divided it into two sections (Eu-Rosularia and Ornithogalopsis) and further series, transferring some species of ''Sedum'' to it. Since then, a number of species have been transferred in and out of the genus, including '' S. sempervivoides'', which at one stage was placed in '' Prometheum''. The genus ''Sempervivella'' was submerged in ''Rosularia''. The genus is now placed within the Leucosedum clade, tribe Sedeae, subfamily Sempervivoideae of the

, but is embedded within ''Sedum''

paraphyletically Paraphyly is a taxonomic term describing a grouping that consists of the grouping's last common ancestor and some but not all of its descendant lineages. The grouping is said to be paraphyletic ''with respect to'' the excluded subgroups. In cont ...

Species

''Rosularia'' contains about 28 species. The following species and subspecies were accepted by

The Plant List The Plant List was a list of botanical names of species of plants created by the Royal Botanic Gardens, Kew and the Missouri Botanical Garden and launched in 2010. It was intended to be a comprehensive record of all known names of plant specie ...

(2013): * '' Rosularia adenotricha'' (Wall. ex Edgew.) C.-A. Jansson ** ''Rosularia adenotricha'' subsp. ''viguieri'' (Raym.-Hamet) C.-A. Jansson * '' Rosularia aizoon'' (Fenzl) A. Berger * '' Rosularia alpestris'' (Kar. & Kir.) Boriss ** ''Rosularia alpestris'' subsp. ''marnieri''(Raymond-Hamet ex H. Ohba) Eggli * '' Rosularia blepharophylla'' Eggli * '' Rosularia borissovae'' U.P.Pratov * '' Rosularia chrysantha'' (Boiss. & Heldr. ex Boiss.) Takhtajan * '' Rosularia cypria'' (Holmboe) Meikle * '' Rosularia davisii'' Muirhead * '' Rosularia elymaitica'' (Boiss. & Hausskn. ex Boiss.) A. Berger * '' Rosularia glabra'' (Regel & Winkl.) A.Berger * ''

Rosularia globulariifolia ''Rosularia'' is a small genus of the family Crassulaceae. It includes about 28-35 species from Europe, the Himalayas, and northern Africa. Taxonomy ''Rosularia'' was originally described by De Candolle (1828) as a section of the genus ''Umbil ...

'' (Fenzl) A. Berger * '' Rosularia haussknechtii'' (Boiss. & Reut. ex Boiss.) A. Berger * ''

Rosularia jaccardiana ''Rosularia'' is a small genus of the family (biology), family Crassulaceae. It includes about 28-35 species from Europe, the Himalayas, and northern Africa. Taxonomy ''Rosularia'' was originally described by De Candolle (1828) as a section of ...

'' (Maire & Wilczek) H. Ohba * '' Rosularia libanotica'' (L.) Sam. * '' Rosularia lineata'' (Boiss.) A.Berger * '' Rosularia lutea'' Boriss. * '' Rosularia pallida'' (Schott & Kotschy) Stapf * '' Rosularia pallidiflora'' (Holmboe) Meikle * '' Rosularia persica'' (Boiss.) A. Berger * '' Rosularia pilosa'' (Fischer ex M. Bieberstein) Boriss. * '' Rosularia platyphylla'' (Schrenk) A.Berger * '' Rosularia radicosa'' (Boiss. & Hohen.) Eggli * '' Rosularia rechingeri'' C.-A. Jansson * '' Rosularia rosulata'' (Edgew.) H. Ohba * '' Rosularia schischkinii'' Boriss. * '' Rosularia sedoides'' (Decne.) H. Ohba * '' Rosularia semiensis'' (J. Gay ex A. Richard) H. Ohba * '' Rosularia sempervivoides'' (Fischer ex M. Bieberstein) Boriss. * '' Rosularia serpentinica'' (Werderm.) Muirhead * '' Rosularia serrata'' (L.) A.Berger * '' Rosularia subspicata'' (Freyn) Boriss.

Distribution and habitat

''Rosularia'' is found in

arid Aridity is the condition of geographical regions which make up approximately 43% of total global available land area, characterized by low annual precipitation, increased temperatures, and limited water availability.Perez-Aguilar, L. Y., Plata ...

and semi-arid regions from North Africa (Morocco, Ethiopia), through the eastern Mediterranean to Central Asia (north of

Tien Shan The Tian Shan, also known as the Tengri Tagh or Tengir-Too, meaning the "Mountains of God/Heaven", is a large system of mountain ranges in Central Asia. The highest peak is Jengish Chokusu at high and located in Kyrgyzstan. Its lowest point is ...

and east of W Himalaya), including Pakistan.

Ecology

''Rosularia'' is an important larval host for the Central Asian butterfly ''

Parnassius apollonius ''Parnassius apollonius'' is a member of the snow Apollo genus ''Parnassius'' of the swallowtail family, Papilionidae. It is found in central and south Kazakhstan, the south Altai, Saur, Tarbagatai, Dzhungarsky Alatau, Tian-Shan, Ghissar-D ...

''.

Uses

A number of species are cultivated as ornamental garden plants, and have been used in

traditional medicine Traditional medicine (also known as indigenous medicine or folk medicine) refers to the knowledge, skills, and practices rooted in the cultural beliefs of various societies, especially Indigenous groups, used for maintaining health and treatin ...

References

Bibliography

;Books * * * * '
full text at
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ResearchGate ResearchGate is a European commercial social networking site for scientists and researchers to share papers, ask and answer questions, and find collaborators. According to a 2014 study by ''Nature'' and a 2016 article in ''Times Higher Education' ...

) ;Articles * * * * ;Websites * * * * Crassulaceae Crassulaceae genera {{Crassulaceae-stub