SYNOPSIS OF THE FLORA OF COLORADO. 153 



EQUISETUM L^viGATini, Brarm. Xear Denver, Dr. Smith; Porter. 

 Saint Vrain Canon and Clear Creek, Coulter. 



EQUISETUM VARIEGATUM, Sehleicher. Clear Creek, near Denver, 

 Coulter. 



FIL.ICES. 



POLYPODIUM VULGARE, L. Hall & Harbour, 694. Grand Canon of 

 Arkansas, Brandegee. 



PTERIS AQTJILINA, L. Along the Platte, and in the Sierra Madre 

 Range, at 10,000 feet altitude, Coulter. Wet Mountain Valley, Brandegee. 



CHEILANTHES FENDLERI, Hook. Spec. Fil, 2, p. 103. Small ; caudex 

 creeping, scaly; stipes sparse, scattered, slender, brown, scaly with sub- 

 ulate, appressed scales, on the main and secondary rachises the scales 

 more copious, broader, ovate- acuminate, white, glossy brown at the base ; 

 fronds 2 / -3 / long, ovate-lanceolate, subcoriaceous, pale-green, gla- 

 brous on both sides, tripinnate ; primary pinnules ovate-lanceolate, ob- 

 tuse, pinnules rather large for the size of the frond, convex, broad- 

 cuneate, sessile, somewhat decurrent, retuse at the apex, entire or 2-3- 

 lobed, the margin of the lobes merely incurved, scarcely confluent and 

 forming the involucres. Hall & Harbour; Brandegee; Canby. Chiann 

 Cafion and Glen Eyrie, Porter. 



CHEILANTHES TOMENTOSA, Link. Grand Canon of the Arkansas, 

 Brandegee. 



CHEILANTHES LANUGINOSA, Kutt. Meelian. Grand Canon of the 

 Arkansas, Brandegee. Chianu Canon, Porter. 



CHEILANTHES EATONI, Baker. Sijn. Fil., p. 140. Stipes tufted, 3'-G' 

 in length, wiry, erect, densely clothed with pale brown, linear-subulate 

 scales ; fronds 3'-%' in length, lJ'-2 7 broad, ovate-lanceolate, tripinuatilid ; 

 lower pinna? distant, alternate or opposite, deltoid ; pinnules linear-oblong, 

 pinnatifid; rachis rigid, covered with scales like the stipe, which also 

 cover thickly the midrib of the pinnae beneath, texture coriaceous, upper 

 surface densely clothed with a white woolly tomentum, lower%lso densely 

 matted, the margin of the segments incurved. Grand Canon of the 

 Arkansas, Brandegee. 



XOTHOL^ENA FENDLERi, Kunze. Stipes densely tufted, 2 / -4 / long, 

 wiry, chestnut-brown, naked, the scales linear, bright-ferruginous ; frond 

 - 7 -3 7 each way, deltoid, tripinnate. all the rachises very zigzag ; pinnae, 

 pinnules, and segments all stalked, deltoid ; lobes close, oolong, blunt, 

 not more than I" long, " broad ; texture subcoriaceous, upper surface 

 naked, lower covered with a fine white powder. Abundant throughout 

 Fremont County, Brandegee. Chiaiiu Canon and Glen Eyrie, Porter. 



PELL.EA GRACILIS, Hook. Ten Mile Canon, below Breckenridge, 

 Brandegee. 



PELL.EA ATROPURPUREA, Link. Glen Eyrie, Porter. 



PELLJEA WRIG-HTIAXA, Hook. (P. (Allosorus) mucronata, Eaton. Sill. 

 Jour., July, 1S56J Stipes tufted, 2 / -4 / long, strong, erect, naked, dark- 

 brown, polished; fronds 3'-G' long, V-3' broad, deltoid, bipiunate; pinna3 

 spreading or erect patent, rigid, I 7 or more long, with several distant, 

 linear, oblong pinnules, sterile ones flat, ovate, fertile ones narrowed, 

 revolute on the margins, 3 /7 -4 7/ long, with a sharp, mucrouate point; 

 rachis chestnut-brown, polished like the stipe ; texture coriaceous, both 

 surfaces naked, pale glaucous-green; involucre broad, coriaceous, rolled 

 permanently over the sori. Canon City and vicinity, Brandegee. 



CRYPTOGRAMME ACROSTICHOIDES, E. Br. (Allosorus acrostickoides, 



