Fimbristylis^\ 



Cyperacece. 



47 



Nut orbicular or obovoid. 



Nut orbicular .... 



Nut obovoid 



Leaves like the stem. 



Nut sessile 



Nut stipitate . 

 Spikelets umbelled or capitate. Dichelo- 

 stylis. 

 Annuals. 



Spikelets umbelled. 

 Nut 6-9-ribbed .... 

 Nut smooth. 



Nut obovate, compressed 

 Nut subglobose, turgid 

 Spikelets capitate .... 

 Perennials (difthylla sometimes annual). 

 Spikelets glabrous. 



L. o, or very short .... 

 L. many. 



Glumes mucronate 



2. 



F. 



ACUMINATA. 



3. 



F. 



NUTANS. 



4. 



F. 



POLYTRICHOIDES. 



5- 



F. 



SCHCENOIDES. 



6. F. DICHOTOMA. 



9- 



F. AESTIVALIS. 

 F. TRIMENI. 

 F. ARGENTEA. 



IO. F. FERRUGINEA. 



. II. 



Glumes with a rounded hyaline tip 12. 

 Spikelets pubescent . . . .13. 

 Stigmas 3. 



Spikelets terete or polygonal (none of the 

 glumes distichous). Tricheiostylis. 

 Annuals. 



Style hairy 14. 



Style glabrous 15. 



Perennial. 



L. o, or minute 16. 



L. many, elongate. 



Spikelets -J-i in 17. 



Spikelets under \ in. 



Umbel contracted . . .18. 



Umbel effuse . . . . 19. 

 Spikelets compressed or trigonous, all or 

 lower glumes only distichous (bracts 

 in all short). Abildgaardia. 

 Spikelets 1-3. 



Spikelets 2-3, f-i in. long . . .20. 

 Spikelets 1, rarely 2, i—^ in. . . 21. 

 Spikelets many, umbelled or subcapitate, 

 Stem leafless ..... 

 Stem leafy. 



L. filiform (see also F. Kraussii). 



Umbel rays 2-4 . . . .23. 

 Umbel rays many . . .24. 



L. flat. 



Spikelets flat, glumes all distichous 25. 

 Spikelets subtrigonous, lower 

 glumes only distichous. 

 Style glabrous. 



Glumes cuspidate . . . 26. 

 Glumes mucronate or mu- 

 ticous. 



F. DIPHYLLA. 

 F. SPATHACEA. 

 F. COMPRESSA. 



F. QUINQUANGULARIS. 

 F. MILIACEA. 



F. GLOBULOSA. 

 F. INSIGNIS. 



F. LEPTOCLADA. 

 F. ASPERRIMA. 



F. TRISTACHYA. 

 F. MONOSTACHYA. 



22. F. PENTAPTERA. 



F. MONTICOLA. 



F. CINNAMOMETORUM. 



F. FULVESCENS. 



F. NIGRO-BRUNNEA. 



