Compilation
Euphorbia johnsonii

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Name

Identification
Euphorbia knuthii Pax [family EUPHORBIACEAE ] (stored under name); Euphorbia johnsonii N.E.Br. [family EUPHORBIACEAE ]
Related name
  • Euphorbia knuthii
  • Euphorbia johnsonii

Flora

Entry for EUPHORBIA Johnsonii N. E. Br. [family EUPHORBIACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical Africa, Vol 6, Part 1, page 441, (1913) Author: (By J. G. Baker, with additions by C. H. Wright.)
Names
EUPHORBIA Johnsonii N. E. Br. [family EUPHORBIACEAE]
Information
A succulent leafless spiny perennial 6–9 in. high. Branches 3-angled, flexuous, 1/4– 1/3 in. thick when dried, “green, with a white stripe down the centre of each face” (Johnson), glabrous; angles with deltoid tubercles 2/3– 3/4 in. apart, bearing a pair of diverging grey needle-like spines 2–4 lin. long on narrow horny shields, decurrent 2–5 lin. below the spines. Peduncles solitary in the axils of the upper tubercles, 2/3– 3/4 lin. long, 1-flowered in the specimen seen, but probably ultimately 3-flowered. Bracts about 3/4 lin. long, broadly ovate, obtuse, apiculate. Involucre sessile, 2 lin. in diam., obconic cup-shaped, glabrous, with 5 glands and 5 broadly cuneate or transversely elliptic fringed lobes; glands 3/4–1 lin. in their greater diam., erect, transversely linear-oblong with parallel, nearly straight margins, sometimes slightly 2-lipped. “Flowers (glands?) pinky-yellow” (Johnson). Ovary much exserted on a recurved pedicel, glabrous; styles 2/3 lin. long, united at the base into a sort of nipple, minutely 2-lobed at the apex. Capsule and seeds not seen.
Distribution
Portuguese East Africa Mozamb. Dist. Mozambique, at Cherinda, Johnson!

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