Cyperaceae. 



153 



587 Perigynia hairy, 588 



587 Perigynia glabrous, 594 



588 Bracts without sheaths, 



588 Bracts with long sheaths, 



589 Stem 4—5 ft. inflorescence an elongate panicle, 



589 Stem 2 — 3 ft. inflorescence a cylindrical spike, 

 590 Stems densely tufted, 



C. filiformis. 



C. hirta. 



C. paniculata. 



C. vulpina. 



C. muricata. 



590 Stems not tufted, C. teretiuscula. 



591 Spike ^— I in., C. stellulata. 



-5 m. 



595 



596 

 597 



598 



591 Spike 2 

 592 Stem 6 — 12 in., 

 592 Stem I — 2 ft., 

 592 Stem 3—6 ft. , . 



593 Flowering April to May 



593 Flowering June to July, 

 594 Staminate spikelet solitary, 

 594 Staminate spikelets several, 



595 Pistillate spikelets drooping, 



595 Pistillate spikelet erect, 

 596 Pistillate spikelets short, 599 



596 Pistillate spikelets long, 600 



597 Fruit inflated, 601 



597 Fruit not inflated, 602 

 598 Fruit veined, leaves pale green, . 

 598 Fruit not veined, .... 



599 Pistillate spikelets roundish, 



599 Pistillate spikelets cylindrical 



600 Beak of perigynium long 



6<X) Beak obscure, ........ 



601 Stem with acute angles, leaves flat, 



601 Stem with obtuse angles, leaves channelled, . 

 602 Pistillate spikelets drooping, . . . . C 

 602 Pistillate spikelets erect, 603 



603 Stem 2 — 3 ft. , . 



603 Stem 3—5 ft., 



604 Pistillate spikelets close together, .... 

 604 Pistillate spikelets distant, ..... 



605 Fruit with 2 green ribs and a broad smooth beak, 



605 Fruit striate with a long rough-edged beak, . 



604 

 605 



C. remota. 

 C. limosa. 



C. pendula. 



C. pra?cox. 



C. pilulifera. 



C. glauca. 



C. pallescen£ 

 C. panicea. 



C. sylvatica. 



C. strigosa. 



C. vesicaria. 



C. ampullacea. 



Pseudo-cyperus. 



C. paludosa. 



C. riparia. 



C.flava. 



C. distans. 



C. binervis. 



C. laevigata. 



