Kyllinga. | CLVI. CYPERACEH (CLARKE). 269 
Head white cinnamon-coloured : . 9. K. sphaerocephala. 
Rhizome horizontal, thick, not very long. Stouter 
species than in the other groups. 
Leaves long; bracts long, more than 3 (except in 
K. melanosperma). 
Stem terete at the top . : : : . 13. K. teres. 
Stem triquetrous at the top. 
Middle spike shortly cylindric. 
Spikes 1-3 (usually l only) . : . 11. K. elatior. 
Spikes 5 : : ; . 14. K. senegalensis. 
Middle spike ovoid or depres eased. 
Bracts 3-4. : : : . 15. K. melanosperma. 
Bracts 5-8. 
Stems 4-8 in. long, rather slender - 10. K. crassipes, 
Stems 10-20 in. long, robust : . 12. K. polyphylla, 
Leaves and bracts short, usually very short or 0. 
Bracts 4 or 5 : : “ 4 ; . 16. K. pungens. 
Bracts 2 or 3 : ‘ 2 é : . 17. K. peruviana, 
Rhizome 0 or very short ; stem appearing bulbous 
at the base, thickened by leaf-sheaths. Plants 
and spikelets small (or medium-sized in K. ner- 
vosa). 
Head of 1 spike only. 
N ne glume not strongly nerved. 
Spike 4-2 in. in diam. ; rhizomeO_. . 18. K. chlorotropis. 
Spikes at in. in diam. : . 19. K. parvula. 
Spike + in. in diam, ; rhizome deheats . 20. K. bracheilema. 
Nut- bearing glume chestnut, with 4 yellow 
nerves on each side : : : . 21. K. nervosa. 
Head of 3-1 spikes, usually 3. 
Spike 1-3 in. long. : : . 22. K. triceps. 
Spike } - in, long at most . . 23. K. microstyla. 
Rhizome 0 or very small; stems not bulbous at the 
base. 
Head of 1 dense long-cylindric yellow spike; 
glumes mucronate. . 24. K. flava. 
Head of 3-1 green or white spikes ; nut- bearing 
glume muticous. 
Spikelets j,-1 in. long; nut-bearing glume 
scabrous on the keel : 25. K. pumila. 
Spikelets 1-4 in. long ; nut bearing glume ieee 
smooth on the keel oe . 26. K. cylindrica. 
***PSEUDO-PYCREUS.—Keel of nut-bearing pe not 
winged; spikelets usually perfecting 2 or more 
nuts. 
Spikelets often perfecting 2 nuts, rarely more. 
Stems hardly thickened at the base, 
Heads tinged golden or yellow. aa 
Middle spike cylindric, slightly tinged yellow 27. K. ruwenzoriensts, 
Middle spike ovoid, golden . 3 . 28. K. chrysantha. 
Heads chestnut with arse points to the 
glumes . . 29. K. pulchella. 
Heads straw-coloured or ‘very pale brown. 
Spike oblong : 
: . 30. K. oblonga. 
Spike subglobose ‘ . 
. 82. K. Buchanani. 
