394 CYPERACE^. (sedge FAMILY.) 



the lanceolate and acute scale. — "Wet places, Canon City (Brandegee) and 

 Middle Park {Parrij), Colorado. 



73. C. Deweyana, Schw. Cespitose: culms weak and slender, 1 to 3 

 feet high, longer than the flaccid and flat leaves : spikes 3 to 6, silvery green^ 

 erect, 4 to 8-flowered, the two or three upper ones approximate, the lower more or 

 less remote, the lowest subtended hij a setaceous bract of more than its own length, 

 all uniformly staminate at the base : perigynium oblong-lanceolate or ovate-lanceo- 

 late, very thin in texture, spongy at the base, nerveltss or very nearly so, nearly 

 erect, prolonged into a long and rough toothed beak, little longer than the very acute 

 or awned white scale. — Moist copses throughout. 



Var. Bolanderi, W. Boott (C Bo'anderi, Olney), with stouter culms, 

 5 to 10 spikes which are mostly 10 to 30-flowered, nerved perigynium, and 

 mostly hispid-awned scales, may be found westward. It occurs in California 

 and Oregon. 



74. C. elongata, L. Cespitose: culms very slender, 1^ to 2^ feet high, 

 sharply and roughly angled, about the length of the numerous rough-edged leaves : 

 spikes 8 to 12, oblong, loosely 8 to 30-Jlowered, somewhat spreading, loosely ap- 

 proximated into an interrupted head, tawny or brown, longer than the almost 

 obsolete bracts : perigynium ovaie-lanceolate,Jirm in texture, strongly many-nerved 

 on both sides, spreading, mostly excurved when mature, narrowed into a nearly 

 smooth rather obtuse point, longer than the obtuse or obtusish broad and ichite- 

 margined scale. — " Uinta Mountains, shore of a small subalpiue lake near the 

 head of Bear River." {Olney in Bot. King Exped.) Readily distinguished by 

 its rusty spikes and spreading strongly nerved perigynia. (Eu.) 



•♦- H- Perigynium, ovate or nearly so, not sharp-margined, firm in texture, erect in 

 closely flowered and rounded spikes. 



75. C. canescens, L. Culms slender, 1 to 2 feet high, often weak, 

 rough, about the length or a little longer than the leaves : spikes 3 fo 10, pale 

 or glaucous, scattered or remote (the upper usually approximate), small and 

 densely 10 to 20- flowered, obovoid or ellipsoid, mostly conspicuously narrowed at 

 the base with staminate flowers : perigynium small, short-ovate or oval, whitish and 

 granular, mostly obscurely nerved, abruptly and minutely beaked, rather longer 

 than the acutish scale. — C. curta, Gooden. Colorado and northward ; not 

 common. (Eu.) 



Var. alpicola, Wahl. Usually more slender : spikes smaller (3 to 9-flow- 

 ered), usualh/ tawny or brown : perigynium somewhat spreading. — C. vitilis, Fries. 

 C. canescens, var. vitilis, Carey. Colorado, Utah, and northward. Including 

 a varietv of weak, few-flowered forms, and passing by numerous gradations 

 into the species. (Eu ) 



Var. dubia, Bailey. Culm stiff" (a foot high), longer than the long-pointed 

 leaves: spikes 3 to 6, all approximated at the top of the culm, oblong, 10 to 20- 

 flowered, light tawny: perigynium gradually narrowed into a beak hilf as long as 

 the body or more, minutely rough on the angles above, nerved, about the length of or 

 a little longer than the scn/e. — Bear River Canon, Utah ( Watson, 123P). An 

 imperfectly known variety, much resembling the European C. helvola, Blytt, 

 from which it differs in its narrower scales, and in the nerved and rough- 

 angled perigynium. 



