278 BOTANY. 



Carex decidua, Boott. — Willow Spring, Arizona, at 7,105 feet eleva- 

 tion (233), Rotkrock. 



Carex Buxbaumii, Wahl. — Twin Lakes, Colorado (104'2). 



Carex atrata, L. — South Park (104G). Var. nigra (C. nigra, All.) — 

 Oro City, Colorado (1047). Var. ovata (C. ovata, Rudge.) — South Park 

 (1050, 1051). Var. from Mount Graham, Arizona, at 9,000 feet (431), 

 with cylindrical spikes on elongated weak peduncles. 



Carex alpina, Sw.— South Park, Wolf (1013). 



Carlx Parryana, Dew. — Smoothish, 4-18' high; leaves J' wide, with 

 revolute margins, tapering to a long slender point, shorter than the culm ; 

 spikes oblong or cylindrical, either single, dioecious, or 1-4, the uppermost 

 much the largest, about 1' long, male, or female with scattered male flowers, 

 the others female; bracts 1-2, slender, the lowest shorter than the culm, 

 with connate purple auricles forming a short (1-2" long) sheath ; perigynia 

 triquetrous, broadly ovate or obovate, emarginate, serrate-ciliate on the 

 margins above, about the length of the broadly ovate, obtuse, mucronate, 

 purple scales with hyaline margins; nerves 2, marginal; stigmas 3; achene 

 obovate, triquetrous. — South Park (1040, 1041). 



Carex aurea, Nutt.— Twin Lakes, Colorado (1052-1057). Willow 

 Spring, Arizona, at 7,195 feet (215) ; a tall form, with short bracts. 



Carex Rossii, Boott. — Twin Lakes (1058). 



Carex capillaris, L. — South Park (1059). Var. elongata, Torr., 

 Twin Lakes (1060). 



Carex lanuginosa, Mx. — Twin Lakes (1061, 1062). Willow Spring, 

 Arizona, at 7,195 feet (241). 



Carex aristata, R. Br. — A single specimen without number or ticket. 



Carex sp.? (1064), Colorado. Too young to determine. 



Carex utriculata, Boott. — Twin Lakes, Colorado (1069) (1068, 

 with more globular fruit, resembling C. ampullacea, Good., common in the 

 Eastern States). Var. globosa, Olney, Sierra Blanca, Arizona (^806). 



Carex vesicaria, L., var. alpigena, Fries. (C saxatilis, L.; C. pulla, 

 Good.; C. Grahamii, Boott.) — 6-24' high, sharply angled, rough above; 

 leaves 2" wide, shorter than the culm, tapering to a long, triquetrous apex ; 

 male spikes 1-2, about 1' long, female 1-3' long, 3" wide, oblong or cylin- 



