| 词条 | Pseudolithos |
| 释义 |
|name = |image= Pseudolithos migiurtinus plant in cultivation.jpg |image_caption=Pseudolithos migiurtinus plant in cultivation |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Gentianales |familia = Apocynaceae |subfamilia = Asclepiadoideae |genus = Pseudolithos |genus_authority = P.R.O.Bally | synonyms = | synonyms_ref = }} Pseudolithos is a genus of succulent flowering plants of the family Apocynaceae, indigenous to Somalia, Yemen and Oman. Description and namingThe plants were first described as a genus in 1965; the name "Pseudo-lithos" means "false-stone" and refers to their pebble-like appearance. All species in this genus are highly succulent, highly reduced, and exhibit tessellation on their stems' surface. Their small flowers appear on the spherical body's surface.[1][2]
TaxonomyPhylogenetic studies have shown the genus to be monophyletic, and most closely related to the widespread Caralluma stapeliads of North Africa. Marginally more distantly related is a sister branch comprising the genera Echidnopsis and Rhytidocaulon.[4] References1. ^{{cite web|url=http://www.tropicos.org/Name/40017983|title=Tropicos - Name - Pseudolithos P.R.O. Bally|work=tropicos.org}} 2. ^{{cite web|url=http://www.asclepiad-exhibition.org/Notes_Pseudolithos_Quaqua.htm|title=Notes Pseudolithos - Quaqua|work=asclepiad-exhibition.org}} 3. ^{{cite web|url=http://www.theplantlist.org/tpl1.1/search?q=Pseudolithos|title=Search results — The Plant List|work=theplantlist.org}} 4. ^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. External links{{Commons category|Pseudolithos}}
2 : Apocynaceae genera|Flora of Somalia |
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