title: Echidnopsis
text: # 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
  
  * Echidnopsis angustiloba E.A.Bruce & P.R.O.Bally - Kenya
  * Echidnopsis archeri P.R.O.Bally - Kenya
  * Echidnopsis ballyi (Marn.-Lap.) P.R.O.Bally - N Somalia
  * Echidnopsis bentii N.E.Br. ex Hook.f. - Arabia
  * Echidnopsis bihenduhensis P.R.O.Bally - N Somalia
  * Echidnopsis cereiformis Hook.f. - South Africa
  * Echidnopsis chrysantha Lavranos - Somalia
  * Echidnopsis ciliata P.R.O.Bally - N Somalia
  * Echidnopsis dammaniana Sprenger - Eritrea
  * Echidnopsis ericiflora Lavranos - Kenya
  * Echidnopsis globosa Thulin & Hjertson - Yemen
  * Echidnopsis inconspicua Bruyns
  * Echidnopsis insularis Lavranos - Socotra
  * Echidnopsis leachii Lavranos
  * Echidnopsis malum (Lavranos) Bruyns - Somalia
  * Echidnopsis mijerteina Lavranos - Somalia
  * Echidnopsis milleri Lavranos - Socotra
  * Echidnopsis montana (R.A.Dyer & E.A.Bruce) P.R.O.Bally - Ethiopia
  * Echidnopsis multangula (Forssk.) Chiov. - Arabia
  * Echidnopsis planiflora P.R.O.Bally - Somalia, Ethiopia
  * Echidnopsis radians Bellerue-Bleck - Kenya
  * Echidnopsis repens R.A.Dyer & Verdoorn - Tanzania
  * Echidnopsis rubrolutea Plowes - Somalia
  * Echidnopsis scutellata (Deflers) A.Berger - Arabia, Kenya
  * Echidnopsis seibanica Lavranos - Arabia
  * Echidnopsis sharpei A.C.White & B.Sloane - Kenya, Somalia
  * Echidnopsis similis Plowes - Somalia
  * Echidnopsis socotrana Lavranos - Socotra
  * Echidnopsis squamulata (Decne.) P.R.O.Bally - Arabia
  * Echidnopsis uraiqatiana Dioli - Eritrea
  * Echidnopsis urceolata P.R.O.Bally - Kenya
  * Echidnopsis virchowii K.Schum. - Somalia, Kenya, Tanzania
  * Echidnopsis watsonii P.R.O.Bally - Somalia
  * Echidnopsis yemenensis Plowes - Yemen
  
  ## Species formerly included
  
  Echidnopsis quadrangula now Caralluma quadrangula
  
  ## Taxonomy
  
  Phylogenetic studies have shown the genus to be monophyletic, and most closely related to the genus Rhytidocaulon. Marginally more distantly related is a sister branch comprising the genus Pseudolithos and the widespread Caralluma stapeliads of North Africa.
  
  