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Velloziaceae
Velloziaceae is a family of monocotyledonous flowering plants. The APG II system, of 2003 (unchanged from the APG system, 1998), also recognizes this family, and assigns it to the order Pandanales. Relationships and evolution By contrast to other members of Pandanales the family demonstrates stricter flower morphology. Despite that, the flower structure is still quite variable and with a lot of specifics. Thus morphological analyses are not able to uncover realistic phylogenetical relationships neither appropriate taxonomy. Embryological development places the family among the amaryllids while the composition of the ovary puts it near the distinct Hypoxidaceae. However, a study regarding the pollen structure in two genera from Velloziaceae was found to be an important character and suggests some correlation but this is still a variable trait. Molecular analyses recognize five distinct genera (by including '' Talbotia'' in '' Xerophyta'' and '' Nanuza'' in '' Vellozia'' thus fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pandanales
Pandanales, the pandans or screw-pines, is an order of flowering plants placed in the monocot clade in the Angiosperm Phylogeny Group and Angiosperm Phylogeny Web systems. Within the monocots Pandanales are grouped in the lilioid monocots where they are in a sister group relationship with the Dioscoreales. Historically the order has consisted of a number of different families in different systems but modern classification of the order is based primarily on molecular phylogenetics despite diverse morphology which previously placed many of the families in other groupings based on apparent similarity. Members of the order have a subtropical distribution and includes trees, shrubs, and vines as well as herbaceous plants. The order consists of 5 families, 36 genera and about 1,610 species. Description Pandanales are highly diverse including large arboraceous plants of tropical rainforests and coastal areas, climbing vines and lianas, as well as very small achlorophyllous (m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barbacenia
''Barbacenia'' is a plant genus in the family Velloziaceae, described as a genus in 1788. The entire genus is endemic to Brazil with the exception of '' B. celiae,'' which crosses the border into Venezuela Venezuela, officially the Bolivarian Republic of Venezuela, is a country on the northern coast of South America, consisting of a continental landmass and many Federal Dependencies of Venezuela, islands and islets in the Caribbean Sea. It com .... ; Species References {{Taxonbar, from=Q8242392 Velloziaceae Pandanales genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barbaceniopsis
''Barbaceniopsis'' is a plant genus in the family Velloziaceae, described as a genus in 1962. It is native to South America (Peru, Bolivia, northern Argentina) ; Species * '' Barbaceniopsis boliviensis'' (Baker) L.B.Sm. - Bolivia, northern Argentina * '' Barbaceniopsis castillonii'' (Hauman) Ibisch - Bolivia * '' Barbaceniopsis humahuaquensis'' Noher. - Jujuy Province in northwestern Argentina * '' Barbaceniopsis vargasiana'' (L.B.Sm.) L.B.Sm. - Peru Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the south and west by the Pac ... References Velloziaceae Pandanales genera {{Pandanales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanuza
''Nanuza'' is a plant genus in the family Velloziaceae, described as a genus in 1976. The entire genus is endemic to Brazil. ; Species * '' Nanuza almeidae'' R.J.V.Alves - Bahia, Espírito Santo, Rio de Janeiro * '' Nanuza luetzelburgii'' R.J.V.Alves - Pernambuco, Piauí * '' Nanuza plicata'' (Mart.) L.B.Sm. & Ayensu - Espírito Santo, Bahia, Minas Gerais Minas Gerais () is one of the 27 federative units of Brazil, being the fourth largest state by area and the second largest in number of inhabitants with a population of 20,539,989 according to the 2022 Brazilian census, 2022 census. Located in ... References External links * Velloziaceae Pandanales genera Endemic flora of Brazil {{Pandanales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vellozia
''Vellozia'' is a plant genus in the family Velloziaceae, established in 1788. The genus is endemic to South America except for one species ''(V. tubiflora),'' whose range extends into Panama. Most of the species are native to Brazil, with a dense concentration of species in the State of Minas Gerais Minas Gerais () is one of the 27 federative units of Brazil, being the fourth largest state by area and the second largest in number of inhabitants with a population of 20,539,989 according to the 2022 Brazilian census, 2022 census. Located in .... ; Species References {{Taxonbar, from=Q9092836 Velloziaceae Pandanales genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acanthochlamys
''Acanthochlamys'' is a monotypic genus of herbaceous plants described as a genus in 1980. It has long been included in the Amaryllidaceae, but more recent systems place it in the Velloziaceae. Kao in 1989 placed in its own family, the Acanthochlamydaceae.Kao Pao-chung 1989. Acta Botanica Sichuanica 1-14. Note: The journal was apparently printed privately by Kao to publish her own papers; see IPNI, http://www.ipni.org/ipni/idPublicationSearch.do?back_page=&id=14662-2 There is only one known species, ''Acanthochlamys bracteata'', native to Tibet and Sichuan Sichuan is a province in Southwestern China, occupying the Sichuan Basin and Tibetan Plateau—between the Jinsha River to the west, the Daba Mountains to the north, and the Yunnan–Guizhou Plateau to the south. Its capital city is Cheng .... References {{Taxonbar, from1=Q15245463, from2=Q10750439 Velloziaceae Endemic flora of China Monotypic Pandanales genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xerophyta
''Xerophyta'' is a genus of flowering plants in the family Velloziaceae. It was named in 1789 by de Jussieu. It is native to Africa, Madagascar, and the Arabian Peninsula. Some species in this genus are poikilochlorophyllous plants. This means that during dry climatic conditions, they lose chlorophyll and cease photosynthesis and transpiration. Thus they are extremely tolerant of desiccation . Hence the name ''Xerophyta'', from Ancient Greek ξηρός (xeros, "dry") and φυτά (phutá), plural of φυτόν (phutón, “plant”). Sequencing of the genome of '' Xerophyta viscosa'' allowed to propose that the mechanism of desiccation tolerance in these plants is achieved by employing the genetic repertoire used by desiccation-tolerant seeds. ; Species ; formerly included moved to other genera: ''Barbaceniopsis Nanuza Vellozia'' See also * Resurrection plant A resurrection plant is any poikilohydric plant that can survive extreme dehydration, even over months or years. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Talbotia (plant)
''Xerophyta elegans'', previously named ''Talbotia elegans'', is a species of plants in the family Velloziaceae. It is endemic to South Africa and its natural distribution and habitat is restricted to Drakensberg Mountains in Mpumalanga province. The plant is evergreen and similar to other members of its family it is able to express high level or tolerance against desiccation and even long treatment with sulphuric acid. Under wet conditions, its leaves are able to revive and restart its photosynthetic abilities. The plant produces narrow but long, leathery leaves and white star-shaped flowers with yellow stamens. The seeds are hooked thus enhancing dispersal by animals. References External links ''Xerophyta elegans''at The Plant List ''Xerophyta elegans''at Tropicos Tropicos is an online botanical database containing taxonomic information on plants, mainly from the Neotropical realm ( Central, and South America South America is a continent entirely in the W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xerophyta Retinervis
''Xerophyta retinervis'' is a deciduous perennial up to 2 metres tall with stout, erect stems, densely covered in persistent, fibrous leaf bases, often charred and blackened by veldfires. Fragrant flowers appear after fire or rain, and are blue or mauve, or rarely white. The small capsules are covered in rough hairs and are loculicidally dehiscent, releasing numerous small, black angled seeds about 2 mm long. The species is tolerant of extreme conditions such as drought, fire, and low temperatures. The old leaf bases are arranged so that rainwater is funnelled down and to the core, where it is absorbed by densely packed roots that run the entire length of the stem. Strap-shaped leaves occur in tufts along stems. The species is widespread throughout seasonally high rainfall regions, occurring in grasslands on rocky outcrops, and sheetrock with a covering of shallow soil. It may be found through KwaZulu-Natal, Mpumalanga, Gauteng, Limpopo, North West Province, South Africa, Nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neogene
The Neogene ( ,) is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period million years ago. It is the second period of the Cenozoic and the eleventh period of the Phanerozoic. The Neogene is sub-divided into two epochs, the earlier Miocene and the later Pliocene. Some geologists assert that the Neogene cannot be clearly delineated from the modern geological period, the Quaternary. The term "Neogene" was coined in 1853 by the Austrian palaeontologist Moritz Hörnes (1815–1868). The earlier term Tertiary Period was used to define the span of time now covered by Paleogene and Neogene and, despite no longer being recognized as a formal stratigraphic term, "Tertiary" still sometimes remains in informal use. During this period, mammals and birds continued to evolve into modern forms, while other groups of life remained relatively unchanged. The first human ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gondwana
Gondwana ( ; ) was a large landmass, sometimes referred to as a supercontinent. The remnants of Gondwana make up around two-thirds of today's continental area, including South America, Africa, Antarctica, Australia (continent), Australia, Zealandia, Arabian Peninsula, Arabia, and the Indian subcontinent. Gondwana was formed by the Accretion (geology), accretion of several cratons (large stable blocks of the Earth's crust), beginning with the East African Orogeny, the collision of India and Geography of Madagascar, Madagascar with East Africa, and culminating in with the overlapping Brasiliano orogeny, Brasiliano and Kuunga orogeny, Kuunga orogenies, the collision of South America with Africa, and the addition of Australia and Antarctica, respectively. Eventually, Gondwana became the largest piece of continental crust of the Paleozoic Era, covering an area of some , about one-fifth of the Earth's surface. It fused with Laurasia during the Carboniferous to form Pan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crown Group
In phylogenetics, the crown group or crown assemblage is a collection of species composed of the living representatives of the collection, the most recent common ancestor of the collection, and all descendants of the most recent common ancestor. It is thus a way of defining a clade, a group consisting of a species and all its extant or extinct descendants. For example, Neornithes (birds) can be defined as a crown group, which includes the most recent common ancestor of all modern birds, and all of its extant or extinct descendants. The concept was developed by Willi Hennig, the formulator of phylogenetic systematics, as a way of classifying living organisms relative to their extinct relatives in his "Die Stammesgeschichte der Insekten", and the "crown" and "stem" group terminology was coined by R. P. S. Jefferies in 1979. Though formulated in the 1970s, the term was not commonly used until its reintroduction in 2000 by Graham Budd and Sören Jensen. Contents of the crow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
