Euphorbia clavigera N.E.Br.

Dwarf, succulent, spiny and leafless, unisexual, with the habit of E. stellata, Willd., but only branches have been seen; branches clavate, 3-6 in. long and 3/4-1 in. in diam. (including the teeth) at the apical part, thence gradually tapering to a stalk-like base 2-3 lin. thick, apparently more or less decumbent or radiately spreading, 3-angled, glabrous, green, not glaucous; angles apparently much compressed and wing-like, deeply toothed; teeth 2-3 lin. prominent and 5-9 lin. apart, deltoid, bearing a pair of diverging pale brown spines 3-5 lin. long at their summits, on small spine-shields, which sometimes extend a short distance down the teeth above or below the spines; leaves very rudimentary and scale-like, 1/4-1/2 lin. long, deltoid; cymes solitary in the axils of the stem-teeth, subsessile, with 3 involucres; bracts 1 1/2 lin. long and as much in breadth, broadly ovate, obtuse, with membranous very minutely toothed margins, glabrous; male involucres sessile, 1/4 in. in diam., cup-shaped, glabrous outside and within, with 5 glands and 5 transversely rectangular ciliate lobes; glands contiguous, 1-1 1/3 lin. in their greater diam., rather narrowly subreniform, two-lipped, from the inner margin being turned up or inwards, entire, probably yellow or yellowish-green; female plant not seen.