282 UNITED STATES AND MEXICAN BOUNDARY. 
Parry. Clearly distinct from Carex Geyeri, Boott., and closely related to Carex Wildenowii， 
Schk. 
| CAREX UMBELLATA, Schk. Car. II, p. 15, t. Ww w. fig. 171, var. VICINA, Dew. in Sill. Journ. 
Т 2 9, p. 31, £ 11, р. 316, ё. D. f. 13. Often with three pistillate spikes near the staminate spike, 
a — 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. 
wine 00 7 QAREX Тнгввеві (Dewey): spicis 4 oblongo-cylindraceis pedunculatis foliaceo-bracteatis ; 
= spica staminifera terminali solitaria sublonga cum squamis oblongis obtusis mucronatis fulvis ; 
pistilliferis 3 suberassis vix nutantibus densifloris sub-approximatis, superioribus vix vaginatis, 
infima cum pedunculo sublongiore vaginato exserto; perigyniis tristigmaticis ovato oblongis 
multo-nervosis subventricosis brevi-conico-rostratis bidentatis squama brevi-oblonga obtusa 
dorso trinervata scabro-aristata longioribus vel basi spicarum brevioribus ; culmis et foliis mar- 
gine scabris.—Mabibi, Sonora, June; Thurber.—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 С. 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 Rita del Cobre, New Mexico; Bigelow. 
7р donda Carex Манти (Dewey): spicis staminiferis 2; raro 3; oblongo cylindraceis erectis, 
—* terminali longiore brevi-pedunculata, secunda brevi illa contigua 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 cuspidata paulo longioribus vel inferne 
paulo brevioribus. In woods on the Colorado of Texas, and near the Rio Grande; Wright. 
Culm about a foot high, erect or flaccid, with subradical flat nerved vaginate leaves and leafy bracts 
nearly equalling the culm; spikes 8—6, oblong-cylindric ; staminate 2, 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 ; scale ovate-oblong, rough cuspi- 
date, a little shorter than the fruit, excepton the lower part of the spike where it often surpasses 
the fruit. Differs from C. scabrata, Schw., 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, Michæ. Flor. Bor.-Amer. 2, p. 115. Rio Mimbres and Santa Rita del 
Cobre, New Mexico; Bigelow, Thurber. 
