Euphorbia,] cxxn. euphorbiace^ (brown^ 487 



Spine-pairs with a pair of hard recurved 



hooks at their base .... 161. E. angularis. 

 Spine-pairs without hooks or prickles at 

 their base, spine-shields only occasionally 



united 162. E. KyiJco:. 



Flowering branches with the wing-like angles 

 I lin. or more thick when dried. 

 Spine-pairs with a pair of very minute 

 prickles or points at their base, some 

 times obsolete on the same stem. 

 Stem-wings l-l^- in. broad, with grey 



horny margins ... . . 163. E. mhalue„ait. 

 Stem-wings 1-2| in. broad, with light 



brown horny margins . . . 165. E. kibioezentu. 

 Spine-pairs without a pair of minute 

 prickles at their base. 

 Branches constricted into conical-ovate , 



segments; angles conspicuously in- 

 dented at the flowering. eyes . . 166. E. ussauyueiisU, 

 Branches with somewhat parallel-sided 

 segments ; angles not indented at the 



flowering eyes l7l. E. intrt'cedens. 



**Spine-shields separate or only here ar.d there 

 united into a continuous horny margin to the 

 stem-angles, but sometimes almost touching 

 each other. 

 Flowering branches flat and thin or sometimes 

 3-angled ; calyx under the ovary with 3 lobes 

 cut into filiform segments ...» 160. E. Dawei. 

 Flowering branches 3-7- (usually 4-) angled. 

 fFlowering-eyes quite separate from the spine- 

 shields and not connected with them by 

 a horny margin (see also 172, E. Sein- 

 hardtii, and 175, E. confertijlora). 

 Spine-pairs with or without small har- 

 dened auricles but without a pair of 

 minute prickles at their base ; young 

 growths with distinct foliage-leaves 

 (always?), soon deciduous (see also 

 190, E, conspicua, which may per- 

 haps have flowering brunches 2 in. in 

 diam.). 

 Flowering branches 3-angled; leaves 

 petiolate. 

 Leaves 1-1^ in. long, re volute at the 

 margins; involucre 3^4 lin, in 

 diam. .,"'... 178. E. WinXieri. 



Leaves mostly 2-5 in. long or some- 

 times smaller, flat ; involucre 2^ lin. 



in diam 179. E. obovalifo'cu 



Flowering branches 4-5-Hngled ; leaves 

 tapering from above the middle to 

 a sessile base. 

 Leaves 1^-3-^ in. long ; spine-shields 



and spines brown . . . 177. E. neglecta. 



