Rhytidocaulon is a plant genus in the family
Apocynaceae
Apocynaceae (, from '' Apocynum'', Greek for "dog-away") is a family of flowering plants that includes trees, shrubs, herbs, stem succulents, and vines, commonly known as the dogbane family, because some taxa were used as dog poison. Notable mem ...
, first described in 1962. It is native to northeastern
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 ...
and the
Arabian Peninsula
The Arabian Peninsula (, , or , , ) or Arabia, is a peninsula in West Asia, situated north-east of Africa on the Arabian plate. At , comparable in size to India, the Arabian Peninsula is the largest peninsula in the world.
Geographically, the ...
.
;Species
Species accepted by the
Plants of the World Online
Plants of the World Online (POWO) is an online taxonomic database published by the Royal Botanic Gardens, Kew.
History
Following the Convention on Biological Diversity, the Royal Botanic Gardens in Kew launched Plants of the World Online i ...
as of February 2023:
*''
Rhytidocaulon arachnoideum''
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Rhytidocaulon baricum''
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Rhytidocaulon ciliatum''
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Rhytidocaulon elegantissimum''
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Rhytidocaulon fulleri''
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Rhytidocaulon macrolobum''
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Rhytidocaulon mccoyi''
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Rhytidocaulon molamatarense''
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Rhytidocaulon paradoxum'' - Ethiopia
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Rhytidocaulon piliferum'' - Somalia
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Rhytidocaulon pseudosubscandens''
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Rhytidocaulon richardianum'' - Somalia
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Rhytidocaulon sheilae''
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Rhytidocaulon specksii''
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Rhytidocaulon splendidum''
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Rhytidocaulon subscandens
Rhytidocaulon is a plant genus in the family Apocynaceae, first described in 1962. It is native to northeastern Africa and the Arabian Peninsula.
;Species
Species accepted by the Plants of the World Online as of February 2023:
*''Rhytidocaulon ...
'' - Somalia, Ethiopia
*''
Rhytidocaulon tortum'' - Arabia
;Taxonomy
Phylogenetic studies have shown the genus to be monophyletic, and most closely related to the genus ''
Echidnopsis'' which inhabits the same region. Marginally more distantly related is a sister branch comprising the genus ''
Pseudolithos'' and the widespread ''
Caralluma
''Caralluma'' is a genus of flowering plants in the family Apocynaceae, consisting of about 120 species.
In 1795 William Roxburgh published the name '' Stapelia adscendens'' for a plant found in India. He commented that the name for the plant i ...
'' stapeliads of North Africa.
[P. Bruyns, C. Klak, P. Hanacek: ''Evolution of the stapeliads (Apocynaceae-Asclepiadoideae) - repeated major radiation across Africa in an Old World group. Molecular Phylogenetics and Evolution.'' 2014. v. 77, no. 1, p. 251--263. ISSN 1055-7903.]
References
{{Taxonbar, from=Q3429900
Apocynaceae genera
Asclepiadoideae