22. C. STRAMIN'EA.. 



24. C. TENEI.LA. 

 25. C. CAN ESC ENS. 



2G. C. Deweyana. 



Carex. 

 CYPERACE.E. 



'i2G 



1 1 of 5 to 20 M.ikekts : bracts expanded 

 '^'^SZ:S^^^ Se ste.u : Fngyuium ovate-lauceo- ^^^ ^ ^,„,osTAcnVA. 

 late,%.oi.gy°at base. ^u\..d<.bose, of 3 to 8 vatber 



Spikolcts dibtuict. 



ovate nuicrouate s^^^^^-. g^^. perigynium oblong, bicon 



aceous, longer than the scale. 

 Snikelets male at bottom. . pcigynium ovate, abruptly 



'^^-'i;^ni:^::i:^=^ SnfflJ'a^s.a.e. .0--, ; 



eiiualling the scale. ovate-lanceolate from a round 



^p^^^^"n;^t^^;o;:i;ES'^-S^'i"^"-^^^^ '^^'" ^s. c. echnata. 



SpiUelS^ll^^l^^eJli^soidaMt^ 29. C. au.oa. 



^P^^'laJceolate, aevuninate rostnUe tvuc. a^s^l^^^o^^. ^,^,^^.^^^^^^, 



"i'^^'^S^.rMiSynS^-^^^^ 30. C. «corAUiA. 



tnvte, l''"^^''' ^^f ' .''\?iUnsoidal. obovoid, crowded or con- 

 ^^^"^'IHris'^l-'iS- :iui.tic.d. gradually beaked, longer ^^_ ^ ,,,,,,,,,,.. 



spike ±.j"-tl0.m...m^^^^^ C. cs-rA-rA. 



^ perigyuium ovate, xMUgul to uiL •i.,.i^ts, the lower 



r....: — ^;i„n not araiiulai, niMi- '> , ,.. ...i^,,, .u'lveless. '^"- ^ 



Perigynium not gr'i""';"\"!-'''''t,-a,'I!rul!u- below,' nerveless. 



Pevii^'uimnconunyssedabo . tu.m ,,.,ves and 2 sho.. „^,.,,,oNEUUA. 



Perigynium »*^>-^,f^:;f;:;i ,^^ ,,,, the base of the beak. '• 



uerves diveiging null ,tKr ^iiifle • the rest 



_ . . Spikelets unisexual; the upper male, mostly SU..1C, 



female or sparingly androgynous. 

 '^SSy^aum beakless. globose or pear-shaped, coriaceous. st,on„ y ^^_ ^ ^^,^^^^ 

 nerved. 

 PerigY"bmi short-beaked perigynium ovate, tapenng 



nutletabruptlyprolongedut't^ c u^^ aLnj.tly beak.., ^...^^..s. 



Perigyniuni vouiul-obovate o ov.a u^^^^^^.^ .tlgn.as 2 or : . 40. C. vu.x.A. 



,,ilice entire or c.;^'>;>^- .^, ,,,i,^,,, «tipUate, l^ap.l- ^,_^^^^_ 



Perigynium "V'il.'"''t^''''^Xll -iduous : nutlet globose. -J^- ^- 



«"^ ts:.,'^;t;.s.! S"'Ki:°i-."'-"»'f-u„,, ..... O....C. 



