434 CYPERACE^. 



' Spikelets short flat, crowded in a white egg-shaped head . 



/. 434. KYLLINGIA. 



Spikelets narrow and long, of many glumes in two ranks, 

 a^ Spikelets egg-shaped : glumes spirally arranged or imbri- 

 cate b 



Flowers unisexual : nut enclosed in a bottle-shaped utricle. 



p. 441. CAREX. 



r Base of style swollen and remaining on the nut . . . c 

 b \ Base of style deciduous by a joint /. 436. fimbristylis. 



[ Style not swollen at the base d 



J Spikelets solitary /. 436. el^ocharis. 



(Spikelets several p, 441, rhyncospora. 



C Each flower with two thin scales : spikelets in a lateral 



, J bunch p, 440. lipocarpha. 



j No scales in the flower ; spikelets solitary or bunched . . 

 I A 439- sciRPUS. 



J Spikelets narrow /. 435. cyperus. 



\ Spikelets broader than thick ..../. 435. pycreus. 



KYLLINGIA. f.b.i. 172 i. 



A genus distinguished among all our Cyperaceae by 

 the white nearly globular head of numerous compressed 

 spikelets with two or three unequal leaves spreading out 

 just below it. Spikelet of four or five glumes, in two ranks 

 rachilla jointed and breaking-off below gl. iii : glumes 

 i and ii empty ; gl. iii bisexual ; gl. iv rarely with seed ; 

 gl. v rudimentary. Nut compressed, the style continuous 

 with it and scarcely enlarged at the base. 



Species about 33, in all the warmer parts of world, not in 

 Europe. 



Kyllin§ia mclanospcrma Nees; F.B.I. vi 588, I 3. A 

 perennial with short thick glabrous rhizome I inch long. 

 Stems 6 inches (up to 20 inches). Leaves, all from the 

 rhizome, 2 to 6 inches. Head of spikelets, i/s by 1/4 

 inch, with leaf-like bracts J^ to 2 inches long, close 

 under it. Spikelets V^ inch long, with one black nut. 

 Flowering glume ovate, acute, keel green. Stamens 



