428 CLVI, CYPERACE# (CLARKE). 
***Style 3-fid. 
in South African examples of B. cinnamomea). 
Stem glabrous at the top; sometimes scabrous or 
obscurely hairy in B. collinaand B. laniceps. 
Nut without longitudinal ribs or transversely 
wavy lines. 
Spikelets usually 51 
ina head. 
Spikelets acute, minutely pubescent. 
, in. broad or more, 3-20 
Nut broadly obovoid . 5. B. barbata. 
Nut narrowly obovoid. : . ll. B. cardiocarpa. 
Spikelets obtuse, with some ee “white : 
hairs : . 8. B. collina. 
Spikelets scarcely ;4, in. ne oad, numerous, 
very closely packed : . 10. B. laniceps. 
Nut with transverse (often very minute) wavy 
lines; outermost cells longitudinally 
oblong. 
Stem 2-4 in. long with 2-1 spikelets 6. B. rarissima. 
Stem 18-24 in. Jong; spikelets 3 in. Jong 7. B. cinnamomea. 
Stem 24-32 in. long; spikelets # in. long 16: 26. aphyllanthoides. 
Nut longitudinally striate, horizontally tra- 
beculate; outermost cells transversely : 
oblong . . 15. B. schimpervana. 
Stem minutely hairy at the top (see also Bet ee 
and B. laniceps above). 
Bracts hardly longer than the head, suberect ; 
plants sparsely hairy. 
Spikelets +3 Me long, numerous 9. B. filamentosa. 
Spikelets 4-3 in. long, usually 3-6 in a | head. 
Leaves setaceous. 
Spikelets acute 12. B. erratica, 
Spikelets obtuse . 13. B. atrosanguinea. 
Leaves very narrowly linear 14. B. scleropus. 
Bracts conspicuous, spreading, green; whole : 
plant hairy _ 17. B. Buchanan. 
****Style 3-fid. Heads of spikelets umbelled (cf. also 7. B. cinnamomea)- 
tiough stems with one head only are not rare, 
Rhizome woody; ut transy eel wavy, not 
striate lengthwise s _ 18. B. Zeyher. 
Annual, slender ; nut striate ‘Netigthwind; sid 
transversely barred . 19. B. trabeculata. 
“*****Style 3-fid. 
Spikelets more than 4 
Spikelet 1, rarely ae 
the throat 
Spikelets 3-5; 
throat : 
Spikelets less than Li in, loug (ofly a few attaining 
even 4 in. long). 
Nut trabeculate, slenderly and obscurely striate 
lengthwise 
Nut smooth, more or less transversely wavy, or 
obscurely reticulate or dotted. 
in. long. 
leaf-sheaths bearded in 
. 34. B. 
leaf-sheaths glabrous in the 
ropa hn dry. 
| Bulbostylis, 
Stem with 1 head of spikelets only (heads occasionally umbelled 
Spikelets Apia all (or most) pedicelled, not clustered. 
macra. 
E8302 B: megastachys- 
Johnstont. 
