Materials for a Flora of the Malayan Peninsula. 57 



Hypogynous bristles linear or absent. 

 Spikelcts panicled. 



Style bifid. Style base thickened conic 

 persistent 11. Ri/nchospora. 



Style 2-3-lid. Style base conic deci- 

 duous . . . . . . . . . . 12. Aclinosdiocnus. 



Style trifid. 



Three or more lowest empty 3-3 

 next fertile . . . . . . 13. Stfiocnua. 



LoAvest flower in each spikelet fer- 

 tile . . . . . . . . 11. Cladiiim. 



Uppermost flower fertile. 

 Hypogynous scales long . . . . . . 15. Lepidospernia. 



Hypogynous scales U . . . . . . . . IG. Gahnia. 



Spikelets in dense cylindric spikes. 



Uppermost glume fertile only .. IT. Rcniirca. 



§ B. Hyi'OLYTUEae. Spikelets of one 

 glume like bract, two thin boat-shaped keeled, 

 glumes containing one stamen each and i 

 to 9 narrow hyaline glumes (squamellae ab- 

 sent in Hypolytrum) 1 or more containing a 

 stamen. Female flower terminal. 



Sjjikes in a corymbose panicle or few. 



Style bifid. Squamellae 2 monandrous 18. IIijinAyirum. 



Stj'le trifid. Squamellae G, 2-3 monan- 

 drous . . . . . . . . . . 10. Thoratodachyuin. 



Spikes solitary or many crowded in a 



head .. .. .. .. .. 20. Mapauia. 



Spikes in a short panicle . . . . 31. ^^tirpodcndron. 



Spikes solitary lateral on leafless stems 33. Lepiroiiia. 



§ C. ScLERiEAE. Spikelets unisexual or 

 with one or more male flowers above a 

 female one. Hypogynous Ijristles none. 

 Xut stipitate with a disc at the base, bony 

 smooth, warted or tessellate. 



Stems leafy . . 33. Sderia. 



§ D. Cakiceae. Spikelets uni- or bi- 

 sexual. >.'ut enclosed in an utricle .. 31. Carex. 



