490 



CXXII, EUPHORBlACEiE (bROWN). 



[Euphorbia^ 



190. 



186. 



Leaves apparently rudimentory and scale- 

 like. 

 Spine-pairs ^-1^ in. apart ; cymes on 



peduncles 4-5 lin. long 

 Spine-pairs ^^ in. apart; flowers un- 

 known ...... 



Stem-angles even, without evident teeth. 

 Cyme-peduncles 6-10 lin. long; calyx 

 under the ovary cut into segments 2-2-J- 

 lin. long; flowering branches spineless 



(always?) 



Cyme-peduncles 2-3 lin. long ; calyx under 



the ovary cut into segments §—1 lin. 



long ; flowering branches spiny 



riowerlng brancbes (dried) \-\ in. In diam., 



armed wltb splnea (except in a spineless 



form of 135, E. heterochroma). 



Leaves well developed 2-12 in. long, f-3 in. broad. 



Peduncles 2-4 together, \\ to 2^ in. long, 



bearing 1 sessile and 2 pedunculate involucres 116 



E. conspicua. 



E. Candelabrvm. 



184. 



Cymes sessile, with 3 involucres 

 Leaves rudimentary or scale-like. 

 ♦Spine-shields none ; spines small, recurved- 

 hooked, arising in pairs from the bark, which 

 separates on dried specimens into 4-5 ribbon- 

 like strips; branches j^-^ in. thick 

 **Spine-shields united into a continuous horny 

 margin along the stem-angles ; spines in 

 pairs, with or without a pair of smaller 

 spines or prickles above them. 

 Plant 3-9 in. (rarely up to 1 ft.) high. 



Stems 4 in. or less thick (dried) often 

 twisted ; spine-pairs with a pair of 

 smaller spines at their base . 

 Stems ^1 in. thick, not twisted. 



Branches flat, constricted into elliptic or 



orbicular segments ^-l in. in diam. 

 Branches (dried) ^ in. or less thick, 

 4-angled ; spines in groups of 4, lower 

 pair 6-10 lin. long, upper shorter 

 Branches -J- in. or more thick, cylindric, 

 with several angles, not constricted ; 

 spines in crowded pairs, 4-6 lin. long. 

 Branches 4-H-angled, more or less con- 

 stricted at irregular intervals ; 

 spines J-4 lin. long. 

 Branches 4-7 lin. in diam. at the 

 thickest parts; spine-pairs with a 

 pair of minute recurved prickles 

 near their base .... 

 Branches 6-12 lin. in diam. at the 

 thickest parts; spine-pairs without 

 a pair of prickles at their base 

 Plant 1^-20 ft. high (size unknown in 138, 

 E. nigrispina, but apparently more than 



117. 



E. Murieli. 

 E. Barteri. 



E. Teke. 

 E. leonensis. 



142. E. Erlatiffer, 



126. 



151 



136. 



145. 



E. torta. 

 E. opuntioidea. 

 E. tetracantha. 

 E. golisana. 



128. 



154. 



E. teiracanlhoidef: 

 E. frdtei'i a. 



