Euphorhia,'\ PZuriiOKBiAOE^ (Brown). 237 



Brandies usually clavate, |-2 in, long ; 

 tubercles slenderly conical, 1J-2J lin. 

 prominent ; leaves lJ-2 lin. long ... (103) hypogsea. 



Branches cj-liudric, 1-6 in. long ; tubercles 

 shortly conical, 1 lin. prominent ; 

 leaves 3-4 lin. long (109) mdis. 



Tubercles on the branches not at all recurved : 

 Body of the plant or rootstock buried in 

 the ground ; branches cylindric, erect 

 or ascending, ^-16 in, long (122) tuber- 



culatoides. 



Body of the plant or the top of it rising 

 above the ground ; branches either 

 less than 6 in. long or radiately spread- 

 ing, not erect : 



Branches in about 3 series, very short, 

 cylindric or subglobose, the longest 

 about 4 lin. long (probably longer 

 under cultivation), 3-4 lin, apart ; 

 glands of the involucre entire, -with 

 a cup-like cavity , (^'^S) brevirama. 



Branches cylindric, clavate or tapering 

 upwards, usually in more than 3 

 series or regularly arranged all over 

 the top of the main body of the 

 plant, radiating or erect, the 

 longest varying in different species 

 from f-15 in. long ; glands of the 

 involucre with teeth or processes 

 along the outer margin (182, E, 

 procumbens, ^Lilh, may belong here) : 

 Involucre with a dense mass of woolly 



white hairs exserted from it and 



its glands either with conspicuous 

 ■ white appendages or woolly on the 



top ... .... ... ... ... (117) inermis and 



var, p. 



Involucre either without exserted 

 woolly white hairs or if they are 

 present are not very dense and 

 the glands are then without con- 

 spicuous white appendages : 

 Outer branches usually 4-15 in, long^ 

 radiating : 

 Leaves 1^-2 J lin. long ; involucres 

 4-6 lin. io diam., having 

 green glands with white pro- 

 cesses (118) Caput -MedusBB, 



Leaves 3-6 lin. long ; involucres 

 2J"3^ lin. in diam. having 

 green glands with greenish- 

 white teeth (119) Bergeri. 



Outer or longest branches |-3 in. 



long, erect or radiating : 



Branches when dried mostly J 



in. or more thick at the upper 



part, more or less clavate, 



