460 Key to the System of 



CARFHA. 



1953. Spikelets almost corymbously arranged. 



General appearance rather grass-like, from dwarf to rather 

 tall ; leaves quite narrow, shorter than the stem, all basal 

 except two floral leaves, nearly flat or somewhat chan- 

 nelled, blunt ; floral bracts few, pale-brown, somewhat 

 pellucid; rudimentary sepals and petals persistent, devoid 

 of plume-like ciliolation at the upper end ; persistent por- 

 tion of the style comparatively long and rigid ; fruit 

 trigonous-ellipsoid. C. alpina. 



K.YLLINGIA. 



1954. Spikelets capitular-crowded, a second flower of each 

 staminate only. 



Never tall ; leaves similar to those of grasses, shorter than 

 the stems ; floral leaves generally three, unequally abbre- 

 viated ; spikelets very small ; the two larger bracts unequal, 

 venular-streaked, the carinular venule hardly prominent; 

 fruit nearly as long as the bract, turgidly ovate, pale 

 outside. K. intermedia. 



CYFERUS. 



1955. Annual ... 1956 



Perennial ... 1957 



1956. Spikelets numerous, crowded into a solitary cluster. 



Dwarf ; leaves very narrow ; conspicuous floral leaves 

 usually three or two ; spikelets minute, flat ; floral bracts 

 pointed, pale-greenish ; stamen often one only ; stigmas 

 usually two ; fruit ovate, compressed particularly at the 

 inner side. C. pygmaeus. 



Spikelets three or two or one only. 



Often very dwarf ; leaves linear-filiform ; the longer floral leaf 

 erect, a shorter besides ; spikelets flat ; floral bracts blunt, 

 rather pale ; stamens one or two ; stigmas three ; fruit 

 trigonous-ellipsoid. C. tenellus. 



1957. Fruit triangular 1358 



Fruit triangular ... ... ... ... ... 1960 



