CLVT. CYPERACEiE (cLARKe). 267 



Hypogynous scales 2 or 1 (not mere bristles), between 

 the glume and the axis, anterior and posterior. 

 Hypogynous scales 2, thin, minute . . . .14. Lipocakpha. 



Hypogynons scale 1, anterior, thick, longer than the 



glmne 15. Ascolepis. 



Hypogynous scales 0, or when present not anterior and 

 posterior. 

 Inflorescence paniculate, sometimes reduced to 1 or 2 



heads nearly . . . . . . ,13. FuiRENA. 



Inflorescence umbelled or in a head. 

 Hypogynons bristles present. 



Style-base distinct from, but crowning the nut . 8. Eleociiaris. 

 Style-base confluent with the pistil and nut . 11. SciEPUS. 

 Hypogynous bristles 0. 



Nut elevated on a small obpyraraidal disc within 



the stamens . . . . . .12. FiClNiA. 



Nut subsessile. 



Style-base passing gradually into the pistil and 



nut . . . . . . .11. SciEPUS. 



Style-base narrow-oblonc, deciduous with the 



style 9. FlMBEISTTLIS. 



Style-base ovoid or pyramidal not falling from 

 the nut. 



Style-base large 8. Eleocharis. 



Style-base minute, discoloured . . 10. Bulbostylis. 



Tribe III. Scboeneae. — Empty glumes at the base of the spikelet 3 or more ; 

 fertile fioioers usually 1 or few {sometimes many) ; inflorescence panicled or capi- 

 tate, not umbelled. 



Style 2-fid 16. Rynchospora. 



Style 3-fid. 



Nut-bearing flower manifestly axillary, low in the 

 spikelet. 

 Rhachilla of spikelet lengthened above the insertion 



of the lowest nut-bearing flower 

 Rhachilla of spikelet not lengthened. 



Lowest flower of the spikelet perfect, nut- 

 bearing ....... 



Lowest flower of the spikelet infertile, the next 

 nut-bearing ...... 



Nut-bearing flower at the top of the spikelet, pseudo- 

 terminal. 

 Plant several feet high ; panicle long . 

 Plant a few inches high; inflorescence capitate 



Sub-Order II. Mapanie.^. Spikelets with 1 terminal femnle nut-bearing 

 flower : at the base of the spikelet 2 opposite boat-shaped glumes (male flowers) 

 containing 1 stamen each ; between these and the pistil (which has no periinith) are 

 1, or several glumes spirally imbricate which are empty or the lower male. — 

 Spikelets very small, imbricated in spikes themselves simulating the spikelets of large 

 Scirpece. Inflorescence more or less scapose. 



Inflorescence umbelled 22. Hypolytrum. 



Inflorescence capitate ....•• 23. Map.\nia. 



Sub-Order III. Carice^. Fertile flowers without stamens. Ijiflorescence 

 panicled or capitate, not umbelled. Spikelet with but 1 female flo« er. 



