Cheeseman.— Revision of the K.Z. Species of Carex. 423 



Culms filiform, usually longer than the leaves; spikelets 

 slender, lower on long filiform peduncles ; glumes and 

 perigynia as in G. comans, but broader 29. G. cheesemanii. 



Pale-green ; culms slender ; spikelets short and broad, often 

 close together; perigynia ovoid, turgid, biconvex or 

 nearly trigonous, smooth, not serrate 30. C. httorahs. 



ttt Tall, stout or slender, from 1£ to 3 feet or more. Leaves 

 broad, £ to \ inch, fiat or keeled, grassy. Male spikelets usually 

 more than one (except in C. dissita). 



Stout or slender, 1 to 2 feet high ; spikelets 4 to 8, long or 

 short, % to 2 inches long by £ inch broad, male spikelets 

 usually solitary 31 - °- dissita. 



Tall and slender, 2 to 3 feet high ; culms often elongating in 

 fruit ; spikelets 5 to 10, terminal 2 to 4 male, female 

 slender, usually on long filiform peduncles, lower com- 

 pound mm . . 32. C. neesiana. 



Stout, 2 to 3 feet high ; spikelets 5 to 6, two terminal male, 

 female very stout and broad, over J inch diameter ; 

 glumes and perigynia broadly ovate .. .. ..33. G. longiculmis. 



Very large and stout, culms often 4 feet high and leaves 

 i inch broad. Spikelets 6 to 12, 2 to 4 inches long, very 

 stout, upper 2 to 4 male; glumes narrow; perigynia 

 obovate-oblong, stipitate 34. C. trijida. 



** Perigynia pubescent, not spreading when ripe, beak short. 

 Small, 2 to 9 inches high, culms much shorter than the 



l eaves 35. G. breviculmis. 



*** Perigynia glabrous, spreading after flowering, large, smooth 

 and turgid. 



Bhizome long, stout, creeping in sand, etc. ; leaves glaucous, 



longer than the culms 36. C. puviila. 



**** Perigynia glabrous, strongly costate-nerved, narrowed into a 

 long and slender sharply 2-toothed beak, spreading when ripe 

 (except in G. vaccilans). 



Pale yellowish-green, tufted, 4 to 9 inches high ; leaves flat ; 

 spikelets 3 to 6, crowded ; perigynia ovoid, suddenly 

 narrowed into the beak, strongly nerved 37. C.flava. 



Culms 1 to 2 feet high ; leaves flat, harsh ; spikelets 5 to 9, 

 distant, 1 to 2£ inches long, very slender, hardly £ inch 

 in diameter ; perigynia fusiform, hardly spreading when 

 r j pe . . . . . . . . . . . . 38. G. vaccilans. 



Culms 1£ to 4 feet; leaves flat, harsh; spikelets 5 to 9, stout, 

 distant, terminal one often mixed with female flowers ; 

 perigynia small, shortly fusiform, spreading .. ..39. C.forsteri. 



Culms 2 to 4 feet ; leaves flat, soft, green and grassy ; spike- 

 lets 3 to 5, pedunculate, nodding, close together, or the 

 lower alone distant ; perigynia large, very narrow, fusi- 

 form or triquetrous 40. C. pseudo-cypcrus. 



