236 * EUPiiOKBlACE^ (Brown). [Uiqyhurhia, 



Bracts scattered singly along tlie peduncle ; 

 glands of the involucre not con- 

 tiguous, lJ-2 lin. broadj with 3 

 sx>reading bifid processes (^1-) filifloi"a. 



§§Lea^'es |-6 lin. long, deciduous (see also 124, 



E, Bolusli above, of which the leaves are 

 unknown) : 

 Flowering branches 3-15 in. long, arising from 

 a thick rootstock ; involucre 5-7 lin. in 

 diam. : 

 Flowering branches when dried 6-9 lin. thick ; 

 tubercles very prominent ; leaves 3-5 

 lin, long (122) tuber- 



i 

 I 



culatoides. 



.Flowering branches when dried 2-4 lin. thick ; 

 tubercles not very prominent ; leaves 

 1-3 lin. long (120) marlotMaiia. 



Flowering branches |-1 in. long, IJ lin. thick 

 when driedj numerous, arising from a thick 

 cylindric or subglobose rootstock or main 

 stem ; involucre 2-2| lin. in diam. ... (Ill) albertensis. 



+ 



JJPeduncles mostly 1-6 lin. long, but in 109, E.rudis, 



110, E. inelcganSj 115, F. Braunsii, and 121, 

 E, Muiriif sometimes 7-11 lin. long, and in 120, 

 E, marlothiana, and 122, E. tuber culatoides, 



varying from 4-24 lin. long (see also species 

 which sometimes have short peduncles mentioned 



under the paragraph J) ; main body of the plant 



or rootstock rarely rising more than 3-4 in. 



- above the ground and sometimes buried in it, 



always much thicker than the branches arising 



from it, obconic, subglobose or cylindric : 



Tubercles on the branches or many of them tipped 



with a conical acute hard whitish point ; 



involucre 3J-4J lin. in diam., usually 



pubescent outside (114) namac^uenBis 



Tubercles on the branches tipped with a small 

 truncate or obtusely conical whitish leaf-scar : 

 Cup of the involucre pubescent or puberulous 

 outside ; main body of the plant or root- 

 stock buried in the ground ; branches erect 



or ascending, simple or branching at or near 

 tlie top, 3-15 lin. long and 3-5 lin. thick : 

 Undivided part of the involucral glanda as 



long as broad, without a short lip or 



turned up margin at its base (120) marlothiana- 



Undivided part of the Involucral glands twice 

 as broad as long, with a lip or turned up 

 margin at its base ... ... ,,. (121) MuiriL 



Cup of the involucre glabrous on the outside, 

 but sometimes the lobes or glands are 

 pubescent or woolly outside : 

 Tubercles on the branches slightly or very 



distinctly recurved ; body of the plant or 

 rootstock buried in the ground, with only 

 the branches rising shortly above it ; 

 glanda of the involucre with 2-4 short 



teeth ; ■ • - 



1 





