488 OXXII, EUPHORBIACEX (BROWN). [ Zuphorbia. 
Leaves 3-1} in. long; spine-shields 
and spines blackish. 
Young stem-angles at the flowering- 
eyes not more than 1} lin. thick 
and their sides with faintly promi- 
nent oblique ribs extending to the 
spine-shields . : ; . 173. EB. similis. 
Young stem-angles «t the flowering- 
eyes 2-3 lin. thick and their 
sides with very prominent oblique 
ribs extending to: the spine- 
shields ae : . 174. EH. tenebrosa. 
Spine-pairs with a pair of minute prickles 
at their base ; leaves rudimentary, scale- 
like; ovary with a many-lobed calyx at 
its base “ c . : ° : 
ftFlowering-eyes touching, merging into or in- 
cluded in the spine-shields (not described 
in 172, H#. Reinhardtit, and 175, E. con- 
fertiflora). 
Flowering branches with very thin wing- 
like angles about } lin. -thick when 
dried . : : : : : . 162. H. Nyike. 
Flowering branches with angles at least 
4 lin. thick (usually much more) in 
dried specimens. 
Flowers unknown; living branches 3-6 
in. in diam., usually 6- (sometimes 5-) 
angled, constricted into conical or 
elliptic segments’. : ° . 
Cymes_ sessile, subsessile or with 
peduncles not more than 3 in. long 
(see also 182, ZL. Erythree,of which 
the flowers are unknown, but from 
analogy probably pedunculate). 
Flowering branches constricted into 
elliptic, lanceolate or orbicular 
segments 13-5 in. long ; calyx under 
the ovary with 3 (or perhaps more) 
linear lobes 1-11 lin. long. 5 
Flowering branches constricted (often 
slightly) into parallel-sided or 
slightly conical segments 6-15 in. 
long; calyx under the ovary 
(where known) minutely 4- 
toothed. 
A bosh up to 8 ft. high; spine-pairs : 
about 5 lin.apart =. : . 175. EB. confertifiora. 
Arborescent, 15-30 ft. high; spine- 
pairs 8-12 lin. apart . : . 176. E. disclusa. 
Cymes (where known) on peduncles 
$-4 in. long; calyx under the 
ovary (where known) divided into 
5-9 linear*or filiform segments 
§-24 lin. long. 
164. EH. kameruniea. 
170. E. grandis. 
168. HE. controversa. 
