Euphorbia. | CXXII, EUPHORBIACE% (BROWN). 49k 
1 ft. high); flowering branches 3-6- 
(usually 4—5-) angled. 
Spines 4-8 lin. long, almost black ; branches 
apparently not constricted intosegments 138. FE. nigrispina. 
Spines 4-4 lin. (or very unequal and some- 
times 1-9 lin.) long, grey; branches 
sometimes irregularly constricted into 
more or less evident segments. 
Spines j-1 lin. long, absent from the 
older parts of the branches “ - 150. #. quinquecostata. 
Spines uniformly 3—4 lin. long; stem- 
teeth with a very short abrupt slope 
above the spines and a long slope below 
them. : : : : . 148. (See under B, gviseolu.) 
Spines sabequal and 1-3 lin. long or in 
153, E. infausta, and 155, EB. Thi, 
very unequal on the same stem and 
up to 9 lin, long; stem-teeth (when 
prominent) about equally sloping 
above and below the spines (see 
also 195, E. franckiana). 
Capsule on a pedicel shorter or scarcely 
longer than the involucre. 
Styles 13-2 lin. long, united for 
nearly or quite half their 
length ; involucre about 2 lin. 
in diam. 
Spines 1-24 lin. long, not very 
unequal, often curved upwards 149, E. polyacantha. 
Spines 1—9 lin. long, very unequal 
on the same branch, straight . 155. E. Thi, and var. 
Styles shortly united at the base 
only or for not more than $ of 
their length. 
Horny border narrowed and not 
more than 4 lin. broad between 
the spine-pairs; involucre 24 
lin. in diam. : 5 . 139. BE. quadrangularis. 
Horny border scarcely narrowed 
and 2—} lin. broad between the 
spine-pairs ; involucre 14-1} 
lin, in diam. : . . 153. EZ. infausta. 
Capsule far exserted on a pedicel 2-3 
times as long as the involucre; 
involucre 14—1# lin. in diam. . 135. EB. heterochroma. 
***Spine-shields quite separate or, in a few 
Species, sometimes separate, sometimes 
united into a continuous horny margin to 
the angles, even on the same stem. 
tPlant evidently more than 1 ft. high, some- 
times a tree 10-25 ft. high. 
Ultimate branchlets very much recurved 
or hooked, 3-angled, twisted . ‘ . 159. BE, Robecchit. 
Ultimate or flowering branches ascending 
or spreading, not recurved. 
