PL end. ph. 9. CYPERACE^. 32. Carex. 43 



Sj^noptic view of the species. 



1 . Spikes quite simple. 



Root creeping; 

 fruit short, spreading C. dioica. 1. 



Root, fibrous ; culm roughish ; 

 fruit rounded at bottom, becomes reflexed C. Davalliana. 2. 



Root fibrous ; culm smooth ; 

 fruit sharp at both ends, becomes reflexed C. puUcaris. 3, 



2. Spikes compound : spikelets sessile, ajidrogynous. 



a. Spikelets aggregate, capitate. 

 Spikes linear ; 



fruit oblong, depressed C. simpliciuscula. 4'. 



Spikes ovate ; fruit ovate, beaked C. incurva. 5, 



b. Spikelets panicled. 



Spikelets compressed, not two-rowed, 

 female above and below, male between . . C, intermedia. 10. 



Spikelets two-rowed, 

 male above, female below, androgynous between j 

 stem crooked ; root creeping C. arenaria. 11, 



Spikelets two-rowed, 

 male above, female below, androgynous between ; 

 stem erect ; root fibrous , C. fVitheringii. 12, 



Spikelets loose, branches distant, 

 male above, female below; glumes brown; 

 fruit small, shining, not diverging C. paniculata, 7. 



Spikelet contracted, 

 male above, female below ; glumes ferruginous ; 

 fruit small, shining, not diverging .... C. teretiuscula. 6. 



Spikelet decompound, 

 male above, female below; culm thick, very acute; 

 fruit large, green, diverging C. vulpina. 9. 



Spikelet short, simple, oblong, interrupted, 

 male above, female below ; 

 fruit large, green, diverging C. muricata. IS, 



Spikelet elongated, branchy at bottom, 

 male above, female below; 

 fruit large, green, diverging C. divulsa. 8. 



c. Spikelets alternate^ male hi the upper part. 



C, divisa. 14. 



