''Pseudolithos'' is a genus of

succulent In botany, succulent plants, also known as succulents, are plants with parts that are thickened, fleshy, and engorged, usually to retain water in arid climates or soil conditions. The word ''succulent'' comes from the Latin word ''sucus'', meani ...

flowering plants of the family Apocynaceae, indigenous to arid areas of Somalia, Yemen and Oman.

Description and naming

The plants were first described as a genus in 1965; the name ''"Pseudo-lithos"'' means ''"false-stone"'' and refers to their pebble-like appearance. It was originally proposed as ''Lithocaulon'' earlier in 1956, but this name was already in use for a genus of fossil algae. All species in this genus are highly succulent, small in size, and exhibit tessellation on their stems' surface. Their small flowers appear on the spherical body's surface. ;Species # ''

Pseudolithos caput-viperae ''Pseudolithos caput-viperae'' is a species of succulent plant in the genus ''Pseudolithos''. It is a small, leafless plant up to tall and either green or brownish. First discovered and described in the 1970s by botanists John Jacob Lavranos an ...

'' Lavranos - Somalia # ''

Pseudolithos cubiformis ''Pseudolithos cubiformis'' is a species of succulent plant native to Somalia. While its genus name, ''Pseudolithos ''Pseudolithos'' is a genus of succulent flowering plants of the family Apocynaceae, indigenous to arid areas of Somalia, Yeme ...

'' (P.R.O. Bally) P.R.O. Bally - N Somalia # ''

Pseudolithos dodsonianus ''Pseudolithos'' is a genus of succulent flowering plants of the family Apocynaceae, indigenous to arid areas of Somalia, Yemen and Oman. Description and naming The plants were first described as a genus in 1965; the name ''"Pseudo-lithos"'' me ...

'' (Lavranos) Bruyns & Meve - Somalia & Oman # ''

Pseudolithos gigas ''Pseudolithos'' is a genus of succulent flowering plants of the family Apocynaceae, indigenous to arid areas of Somalia, Yemen and Oman. Description and naming The plants were first described as a genus in 1965; the name ''"Pseudo-lithos"'' m ...

'' Dioli - Eastern Ethiopia # ''

Pseudolithos harardheranus ''Pseudolithos'' is a genus of succulent flowering plants of the family Apocynaceae, indigenous to arid areas of Somalia, Yemen and Oman. Description and naming The plants were first described as a genus in 1965; the name ''"Pseudo-lithos"'' m ...

'' Dioli - Somalia # ''

Pseudolithos horwoodii ''Pseudolithos horwoodii'' is a species of succulent plant in the genus ''Pseudolithos''. Native to arid areas of Somalia Somalia, , Osmanya script: 𐒈𐒝𐒑𐒛𐒐𐒘𐒕𐒖; ar, الصومال, aṣ-Ṣūmāl officially the Fe ...

'' P.R.O. Bally & Lavranos - Somalia # ''

Pseudolithos mccoyi ''Pseudolithos'' is a genus of succulent flowering plants of the family Apocynaceae, indigenous to arid areas of Somalia, Yemen and Oman. Description and naming The plants were first described as a genus in 1965; the name ''"Pseudo-lithos"'' m ...

'' Lavranos - Yemen & Oman # ''

Pseudolithos migiurtinus ''Pseudolithos migiurtinus'' is a species of succulent plant in the genus ''Pseudolithos''. Native to Somalia Somalia, , Osmanya script: 𐒈𐒝𐒑𐒛𐒐𐒘𐒕𐒖; ar, الصومال, aṣ-Ṣūmāl officially the Federal Republ ...

'' (Chiov.) P.R.O. Bally - S + C Somalia # ''

Pseudolithos sphaericus ''Pseudolithos'' is a genus of succulent flowering plants of the family Apocynaceae, indigenous to arid areas of Somalia, Yemen and Oman. Description and naming The plants were first described as a genus in 1965; the name ''"Pseudo-lithos"'' m ...

'' (P.R.O. Bally) P.R.O. Bally - N Somalia

Taxonomy

Phylogenetic 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 ''Echidnopsis'' is a genus of succulent, cactus-like plants in the family Apocynaceae, first described as a genus in 1871. They are native to eastern Africa and the Arabian Peninsula. ;Accepted species ;Species formerly included ''Echidnopsi ...

'' and ''

Rhytidocaulon Rhytidocaulon is a plant genus in the family Apocynaceae, first described in 1962. It is native to northeastern Africa and the Arabian Peninsula ;Species # '' Rhytidocaulon paradoxum'' P.R.O.Bally - Ethiopia # '' Rhytidocaulon piliferum'' Lavra ...

''.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

External links

Dave's Garden
photos Apocynaceae genera Asclepiadoideae {{Apocynaceae-stub