Kyllinga. 



CLVI. CYPERACE^ (cLARKe). 



Head white cinnamon-coloured 

 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 . . . . . 



Stem triquetrous at the top. 

 Middle spike shortly cylindric. 

 Spikes 1-3 (usually 1 only) 

 Spikes 5 ..... 



Middle spike ovoid or depressed. 



Bracts 3-4 



Bracts 5-8. 



Stems 4—8 in. long, rather slender 

 Stems 10-20 in. long, robust 

 Leaves and bracts short, usually very short or 

 Bracts 4 or 5 



Bracts 2 or 3 



Rhizome 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. 



Nut-bearing glume not strongly nerved. 

 Spike \-^ in. in diam. ; rhizome 

 Spikes ^-^'in. in diam. . . . . 



Spike \ in. in diam. ; rhizome delicate 

 Nut-bearing glume chestnut, with 4 yellow 

 nerves on each side . . . . 



Head of 3-1 spikes, usually 3. 



Spike I-5 in. long . . . . . 



Spike \ in. long at most . . . . 



Rhizome or very small ; stems not bulbous at the 



base. 



Head of 1 dense long-cylindric yellow spike ; 



glumes mucronate ..... 



Head of 3-1 green or white spikes ; nut-bearing 



glume muticous. 



Spikelets x\-8 ^"' ^°"&i 



scabrous on the keel 

 Spikelets ^-^ in. long ; 

 smooth on the keel 



nut-bearing glume 

 nut-bearing glume 



209 

 9. K. sphaerocephala. 



13. K. feres. 



K. elatior. 



K. senegalensis. 



15. K. melanosperma. 



K. crassipes. 

 K. polyphylla. 



K. pungens. 

 K. peruviana. 



K. chlorotropis. 

 K. parvula. 

 K. bracheilema. 



21. K. nervosa. 



22. 

 23. 



K. triceps. 

 K. microstyla. 



24. K.flava. 



26. 



K. pumila. 

 K. cylindrica. 



TsEUDO-PTCEEUS. — Keel of nut-bearing glume 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. 



Middle spike cylindric, slightly tinged yellow 

 Middle spike ovoid, golden . . . . 



Heads chestnut with green points to the 

 glumes ....... 



Heads straw-coloured or very pale brown. 



Spike oblong ...... 



Spike subglobose .....' 



27. 



28. 



K. rutvetizoriensis. 

 K. chrysantha. 



29. K.pulchella. 



30. 

 32. 



K. ohlonga. 

 K. Burhanani. 



