African Plant Database

Euphorbia columnaris P.R.O. Bally
Protologue : Candollea 19: 151 (1964)
Information on the genus : Euphorbia
Status for TA : accepted (present)
Ecology and distribution
Trop. Afr.
Biology : Succulent perennial with a solitary stem erect to 1,3 m height and 8 cm Ø; stem branched only when damaged at the apex, terete, 5-8 cm thick, 13-17-angled; angles separated by deep grooves, sinuately toothed, with teeth 5-15 mm apart; spiny;
Ecology : Crevices of gypsum rock with Aloe inermis, Jatropha nogalensis, Cleome droserifolia, Negripteris scioana, Adenia aculeata, Launaea sp., Commiphora spp.; 730-760 m alt.
  There are a few grafted plants in cultivation.
  Bally (1964) observed an alarming decrease in numbers among the few scattered populations. The causes must be sought in the heavy overgrazing. "Probably the rarest Euphorbia of all, this species is virtually extinct in its habitat" [see more in the book]

Bibliography for Southern Africa :
  • LEBRUN, J. P. & A. L. STORK (1991). Enumération des plantes à fleurs d’Afrique tropicale. Généralités et Anonaceae à Pandanaceae. Énum. Pl. Fleurs Afr. Trop. 1: 215
More info on :
see under Jstor_African Plant Initiative
see under chg
see under The International Plant Name Index
carte afrique num 106008
Record n°106008
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