104 CYPERACE^E. 



Series A. Rhachilla of spikelets not much winged. Leaves and bracts 

 long (except in C. malaccensis). 



Annuals, or sometimes flowering the second year. 



i 



Spikelets oblong or oblong-linear 12-25 mm. long 3 mm. 6 mm. 



broad C compress. 



Spekelets linear 8 mm.-13 mm. long 1^ mm. broad C. Iria. 



Rhizome becoming woody, elongate stolons frequent. Large (or 

 rniddle-sized. 



Spikelets very narrow nearly filiformed 1-^nirn. broad. 



Leaves usually few, topmost ereat short green, ,= word-shaped, 



shortly caudate C. malaccensis. 



Leaves many, topmost spreading, long, much exceeding 



inflorescence . C. distans, C. nutans, C. eleusinoides. 



(Note : I can not satisfactorily distinguish these three species one from another). 



Spikelets much broader oblong or linear never filiformed ! 

 3 mm. broad. 



Spikelets broadly linear nearly 2 cm. long 2-3 mm. broad. . . 



C. procerus. 



Spikelets oblong or linear narrower and shorter, not exceeding 

 8 mm. in length. 



Glumes not imbricate, rhachilla iiairy C. pilosus. 



Glumes densely imbricate, rhachilla glabrous. 



Nut oblong | mm. long C. densespicatiis. 



Nut elongately oblong nearly 1 mm. long 



C. mediorubra. 



Saries B. Rhachilla of spikelets (usually conspicuously) winged. 



Tall. Stolons long, hardening into creeping rhizome*. Leaves short, 

 rarely % length of stem. Glumes approximate, closely imbricate . . 



C. tegeti/ormis. 



Tall. Rhizome very short, woody ; stolons 0, i. e. lateral shoots from 

 base of stem immediately ascending. Glumes scarcely imbricate in 



fruit C. Zdlingeri. 



Tall or medium plants, stoloniferous or rhizome woody. Leaves and 



