CATALOGUE. 277 



obtuse margins and nearly entire beak, appear to distinguish it from divisa, 

 which has a bidentate, many-striate perigynium, wing-margined above. 



Caeex maecida, Boott. — Twin Lakes (1012) ; Santa Fa", N. Mex. 



Caeex vulpinoidea, Mx. — Tanks 26 miles south of Camp Apache, 

 Arizona (267). 



Caeex mueicata, L. — Santa F6", N. Mex. (46, is a very small form). 

 Var. gbacilis, Boott (C. Hookeriana, Dew.), South Park, Colorado (1006). 



Caeex stenophylla, "Wahl. — South Park (1012). 



Caeex tenella, Schk. — Twin Lakes (1016). 



Caeex canescens, L. — Twin Lakes (1017) (1018 possibly C. canescens, 

 Blytt). 



Caeex echinata, Murray (C. stellulata, Good.) (1018 in part). — Twin 

 Lakes; also (214) from "Willow Spring, Arizona, at 7,400 feet. 



Caeex Liddoni, Boott. — Colorado (1030 and 1031) ; Mount Graham, 

 Arizona, at 9,000 feet elevation (427). Dr. Boott founded this species 

 on specimens brought from the Columbia River by Dr. Scouler, and 

 noticed its affinity to C. arida. It has since been found to have a wide 

 range at the West, and to be very variable, approaching C. leporina, L. 



Caeex lepobina, L. — Colorado, "Wolf (1024, 1025). 



Caeex festiva, Dew. — Mosquito, Colorado (1020); Mount Graham, 

 Arizona, at 9,0^0 feet (430). 



Caeex addsta, Boott.— Colorado, Wolf (1028, 1029). 



Caeex eigida, Good. (0. vulgaris, Fries, var. alpina, Boott.) — Chiri- 

 cahua Creek, Arizona; also Mosquito, Colorado (1035, 1036), Wolf. 



Caeex vulgaeis, Fries. — Twin Lakes, Colorado (1039.) 



Caeex aquatilis, "Wahl — South Park (1034). Var., Twin Lakes 

 (1037, 1038, Wolf), 18' high, very slender, with 1-2 male and 1-2 linear- 

 clavate, loosely flowered, exsertly pedunculate female spikes; bracts shorter 

 than the culm ; perigynia (very young) obovate, nerveless, abruptly ter- 

 minated by an extremely short, entire beak, broader and shorter than the 

 lanceolate purple scales which have a pale midrib. 



Caeex Jamesii, Torr. — Denver, Colorado (1032); Willow Spring, Ari- 

 zona, at 7,195 feet (216). (No. 245, from Willow Spring, resembles C. 

 acuta, L., but the bracts are shorter and the perigynia bidentate.) 



