284 Anihih of t)i<- South African Museum. 



Leaves keeled or strongly convex on the lower 

 surface, fairly narrow. 

 Heads always solitary, broadly obconic, cam 

 panulate or cylindrie 

 [nvolucral bracts no1 mucronate or only 

 slightly bo. 

 1 eaves usually fair-sized, nol tufted, mostly 

 Btrongly ciliateor setose on the surfaces. 

 A.chenes densely villous all over; loaves 



often hirsute all over .... 27. hirsute, 

 aehenes glabrous excepl tor a tuft of hairs 



at the base; leaves hairy only on the 



margin. 

 Branohlets shortly pubescent, 

 [nvolucral bracts with jagged crinkled 



margins 28. elongaia. 



[nvolucral bracts with entire margins 29. staehelinoides. 

 inchlets quite glabrous . . . 30. viscosa. 

 heaves very small anil tufted, glabrous or 



very minutely eiliolale on the margins , 31. gloincrata. 

 [nvolucral bracts conspicuously mucronate . 32. niucronciia. 

 Heads usually 3 together at the ends of the 

 shoots, narrowly obconic, aboul 5 mm. in 

 diameter 33. tricephala. 



H ,; i vbratak Leaves flashy, glabrous , imbcseent within Ihe 



. smooth or i pposite. Heads corymbose 



t.-7itiir.< villous. 



- ms proeumbonl and rooting at the nodes ; leaves con- 

 spicuously villous within the sheathing base :;t. hcteroca 

 S ms neither procumbent nor rooting at the nodes: 

 leaves very rarely pubescent within the base. 

 •Heads densely glomerate into a compound head. I- 



flowered ;;.".. fasciculata. 



ids corymbose, 3 several arranged laxly at the end 

 of each shoot. 3 several-flowered. 

 1 eaves •Jem. long or less: basal sheaths ."> mm. long 

 or usually much le 



es prominently uncinate .... \ata. 



■ raighl or nearl) 

 Heads 1 cm. lone; or less. 



Leaves alternate, free al the base . . .37 ric*. 



Leaves opposite and connate into a sheath at 

 t he I 

 Leaves 1"5 2*5 cm. long; heads numerous in 



eaeh corymb ...... :>S. pnniculata. 



Leavi u, long; heads 1 3 in eaeh 



corymb ....... iata. 



