5^32 UNITED STATES AND MEXICAN BOUNDARY. 



Parry. Olearlj distinct from Carex Greyerij Boott.. and closely related to Carex Wildenowii 



Schh 



75j t. Wia w. fig. 171, var. vicina, Bew 



dll,prSlQ,t i>. /. 13. Oft 



as well as the radical spikes^ on the same tuft. Woods on the Colorado and Blanco rivers, 

 Texas; Wright. In both these localities, the plant described and drawn by Schk.^ and the 

 variety also abound together, the latter most common. 



Carex Thurberi {Deivey) : spicis 4 oblongo-cylindraceis pedunculatis foliaceo-bracteatis ; 

 spica staminifera terminali solitaria sublonga cum squamis obloniris obtusis mucronatis fulvis : 



subcras 



cum 



perigyniis tristigmaticis ovato oblongis 



multo-nervosis subventricosis brevi-conico-rostratis bidentatis sq^uama brevi-oblonga obtusa 

 dorso trinervata scabro-aristata longioribus vel basi spicarum brevioribus ; culmis et foliis mar- 



gine scabris, — Mabibi 



Thti7'her. — Culm two feet high, erect, scabrous above and 



smooth below the spikes, leafy towards the base ; upper leaf vaginate and long as culm, and 

 with the leafy bracts rough on the edges ; staminate spike single, erect, long, and bracteate ; 

 pistillate spikes three, oblong, cylindric, thickish, densely flowered, pedunculate, the lowest 

 vaginate, with an exsert peduncle ; stigmas three ; perigynium ovate or oblong, many-nerved? 

 tapering into a shortish beak, bidentate, some inflated or ventricose ; pistillate scale short, 

 oblong, obtuse, scabrous cuspidate, shorter than the fruit, except at the base of the spikes it is 

 longer. This differs much from C. hystricina, Willd.^ to which it is related* 



Carex hystricina, Willd. Spec. Plant. 4, p. 232. On the banks of the Limpio, Texas ; and at 

 Santa Kita del Cob re, New Mexico ; Bigeloiv. 



Carex Wrightii {Dewey) : spicis staminiferis 2 ; raro 3 ; oblongo cylindraceis erectis,, 

 terminali longiore brevi-pedunculata, secundabrevi illacontigua sessili raro remotiuscula, tertia 

 remotiore, omnibus bracteatis cum squama oblonga acuta castanea inferne aristata ; spicis pistil- 

 liferis 2-3 oblongo cylindraceis gracilibus sublaxifloris remotis exserte pedunculatis, superiore 

 apice staminifera evaginata, infima longe vaginata et longe exserta, omnibus foliaceo-bracteatis ; 

 perigyniis tristigmaticis ovatis subconicis subtriquetris brevi-rostratis multo-nervatis ore bilabi- 

 atis subscabris vix ventricosis squama ovato-oblonga cnspidata paulo longioribus vel inferne 

 paulo brevioribus. Jn woods on the Colorado of Texas^ and near the Eio Grande ; Wright. 

 Culm about a foot high, erect or fl^accid, with subradical flat nerved vaginate leaves and leafy bracts 

 nearly equalling the culm ; spikes 3-6, oblong-cylindric ; staminate 2j upper an inch long and 

 pedunculate, the lower one-third as long and commonly close to it, rarely a third^ which is 

 remotish, and all bracteate ; pistillate spikes 2-3, remote and pedunculate, the upper staminate 

 at the apex, the lower longer pedunculate and exsert ; all rather loosely flowered, especially 

 towards the peduncle ; stigmas three ; perigynium ovate, sub-conic, slightly triquetrous, short 

 and round, rostrate, many-nerved, bilabiate and subscabrous 5 scale ovate-oblong, rough cuspi- 

 date, a little shorter than the fruit, except on the lower part of the spike where it often surpasses 

 the fruit. Differs from C. scabrata, Schto.y to which it is nearly related in the number of 

 staminate spikes, and in various particulars of the fertile spikes and their fruit. Named after 

 Mr. C. Wright, one of the exploring party. 



Carex LANUGINOSA, Michx. Flor. Bor^-Amer. 2, p. 175. Eio Mimbres and Santa Bita del 

 Cobre, New Mexico ; BigeloWy Thurber, 



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