228 



CYPERACE^E. 



Carex. 



61. C. TRIQUETKA. 



C. POLYMORPHA. 

 C. AMPLIFOLIA. 



C. CHEROKEENSIS. 

 C. WHITNEYI. 

 C. SARTWELLIANA. 



Spikes 3 to 5 ; male 1 : perigynium covered with long white 

 hairs, sharply triangular-ellipsoidal, acute at each end, 

 1 - 4-nerved on the sides, the beak very short-bideiitate. 

 Beak of perigynhim more or less elongated. 

 Beak emarginate or obliquely truncate. 



Spikes cylindrical, 2 to 4 ; the male 1 to 3 ; female 1 or 2 : peri- 

 gynium triangular-ellipsoidal, turgid, nerved, densely gran- 

 ular, beak obliquely cut with conspicuously hyaline orifice. 62. 

 Spikes 5 to 7, cylindrical ; the male single : perigynium ellip- 

 soidal, turgid, divergent, nerveless, glabrous, abruptly ros- 

 tellate, the oblique orifice hyaline : scales 3-nerved. 

 Spikes 5 to 11, oblong-cylindrical ; the male 2 or 3 : perigynium 

 inflated, glabrous, ovoid or lanceolate, rostellate, obsoletely 

 nerved, the orifice entire and hyaline. 



Pubescent : spikes 3 to 5, oblong or cylindrical ; the male 1 or 2 : 

 perigynium smooth, ellipsoidal, sharply angled, rostrate, 

 nerved, the orifice emarginate : scales 3-nerved, ciliate. 

 Pubescent throughout : spikes 5 to 8, cylindrical ; the male 1 : 

 perigynium triangular-obovoid, abruptly rostrate, the ob- 

 lique orifice entire : scales 1 - 3-nerved. 

 Beak bidentate. 

 Perigynium smooth. 



Spikes 3 to 5, cylindrical, slender ; the male 1 : perigynium 

 ellipsoidal, short-beaked, acute at base, nerved : margins 

 of the sharp teeth ciliate. 



Spikes 3 or 4, linear, loosely -flowered : perigynium ellipsoi- 

 dal, acute at base, nerved, short-beaked, the obtuse white 

 teeth ciliate. 



Spikes 4 to 6, oblong ; the male 1 : perigynium oblong or 

 ovate, obsoletely nerved, the beak serrate : scales 1-3- 

 nerved. 



Spikes cylindrical or club-shaped ; the male 1 to 3 : bracts 

 shorter than the peduncle, their sheaths enlarging upwards : 

 perigynium membranous, compressed-triangular, slenderly 

 nerved : stem tall : leaves 2 to 4 lines broad. 

 Slender : spikes 3 to 6 ; male 1 or 2, cylindrical ; female 

 oblong : perigynium ellipsoidal, nerved, the teeth hyaline : 

 leaves 1 line broad. 

 Perigynium hirsute. 



Spikes 3 to 6 ; male 1 to 4 : perigynium coriaceous, hispid, 

 ovoid, obtusely angled, abruptly short-beaked with diver- 

 gent teeth, nerved. 

 Spikes 4 or 5 ; male 1 : perigynium ellipsoidal, glabrous at 



base, hirsute at top, slightly nerved at base. 73. 



Perigynium long-beaked, large, inflated (except n. 78), bicuspidate. 

 Male spikes 3 to 5 ; female 2 to 4 : perigynium ovoid or lanceo- 

 late, strongly nerved, the teeth long and slender. 74. 

 Male spikes 2 to 4 ; female 1 to 3, remote : perigynium globular- 

 ovoid, inflated, 8-10-nerved. 75. 

 Male spikes 2 or 3 ; female 2 to 4 : perigynium ovoid or conical, 



ascending, many-nerved. 



Male spikes 2 to 5 ; female 2 to 6 : perigynium ellipsoidal or 

 globose-ovoid, often squarrose : scales awned : stem spongy 

 at base : leaves conspicuously nodose. 

 Male spike 1 ; female 3 to 5, drooping : perigynium subturgid, 

 lanceolate, stijtitate, unequally 3-angled, attenuate to a long 

 slender bicuspidate beak, the subulate teeth divergent : 

 scales hispidly awned. 78. C. PSEUDOCYPERUS. 



1. Spike solitary, terminal, androgynous, staminate at top : stigmas 3. 

 * Bracts colored, scale-like. 



1. C. Pyrenaica, "Wahl. Cespitose, the filiform stems 1 J to 7 inches high, 

 very leafy at base : leaves ^ to 1 line broad, flat or often conduplicate : spike dark 

 brown or purple, ellipsoidal, densely flowered, 5 to 8 lines long by 2 to 4 lines 

 thick ; scales membranous, deciduous, in the male flowers linear-oblong, acutisJi, the 

 female darker, ovate-lanceolate or oblong-lanceolate, acute or obtuse, the lowest often 



<>:$. 



04. 



05. 



60. 



07. 



(58. 



70. 



71. 



72. 



76. 



C. CINNAMOMEA. 



C. MENDOCINENSIS. 



C. LCZULINA. 



C. LUZUL.JEFOUA. 

 C. FULVA. 



C. FILIFORMIS. 

 C. GYNODYNAMA. 



C. TRICHOCARPA. 

 C. MONILE. 

 C. VESICARIA. 



77. C. UTRICULATA. 



