Artificial key to the geisIera 



I.— ERIOCAULE^ 



t'eriahth of 6 bristles. Ovary 3 



3-loDed, 3-celied. ... (1-6) Eriocaulon. 



II.— CYPERACE^ 



Flowers 2-sexual. 



[a) — Flowering glumes ail distichous. 



Style 2'fid, nut generally 

 biconvex : — 

 Spikelets few , flowered, , 



, Rachilla deciduous ... (7-8) Kyllinga, 

 Spikelets many flowered. 

 KnchilU persistent. 



Nut laterally compressed. (9-11) Pycreus. 

 Nut dorsally compressed. (12-13) Juncellus. 



Style .3-fid., nut generally 

 trigonous : — 

 Spikelets many flowered 



Kachilla persistent ... (14-^5) Cyperus. 

 Spikelets few flowered. 

 Richilla deciduous : — ■ 



Glume not winged ... (26-27) Mariscus, 

 Glume winged ... (28) Courtoisia. 



{b) — Flowerijig glumes spirally arranged. 



Inflorescence terminal. 



Inflorescence umbellate, 



corymbose, rarely one 

 spikelet. (Fimbristylisf 



