5. KYLLINGA peruviana, Lam. Encyc. Ill: 366. 1789. 



Mariscus apliyllus, Vahl, Enum. II : 373. 1806. 



Kyllitiga aphylla, Kunth, Enum. II : 127. 1837. 

 Obtained in Jamaica by several collectors ; not observed by us- 

 (J.P. 843). 



I. 



3- 

 4- 



2. Cyperus L. Sp. PL 44. 1753 



Style-branches 2 : achene lenticular 

 Achene dorsally flattened 

 Achene laterally flattened 



Scales of the spikelets blunt, straw^- 



colour 



Scales of the spikelets acute 



Scales 1.5 mm. long, dull ; inflores- 

 cence compact 



Scales 2-2.5 111. long, shining : in- 

 florescence loose 



Style-branches 3 ; achene turgid or trigo- 

 nous 



A. Spikelets more or less flattened, not 

 breaking up at the nodes 

 I. Rachis of the spikelet persistent, 

 the scales falling away from it 



a. Rachis-wings none, or very nar- 

 row 

 Plants annual 

 Scales sharply acuminate 

 Scales obtusish, often with 

 purplish margins 

 Plants perennial 



Spikelets only I or 2 ; culm 

 and leaves filiform 

 Spikelets several or numerous 

 Spikelets spicate, about I 

 mm. wide 

 Spikelets digitate 

 Stamens 3 or 2 



Scales acute or acumi- 

 nate ; basal leaves re- 

 duced to sheaths 

 Scales mucronate or 

 short-awned ; basal 

 leaves normal 



Leaves convolute, at 

 least in drying 



Achene narrowly 

 linear-oblong 

 Achene obovoid ; 

 culm viscid 

 Leaves flat, grass-like 

 Stamen only I. 



Spikelets lanceolate to 

 oblong-lanceolate 

 Spikelets ovate, elongat- 

 ing in age. 



C. laevigatus 



C. densus 



C. odoratus 

 C. faniculatus 



9. C. Has pan 



10. C. oxylepis 



II. 

 12. 



C. elegans 

 C. diffnsus 



13. C. 'ochraceus 



