CANADIAN FILICINEyK. 183 



miles beyoud Spence's Bridge, on the Thompson River. — Macoun. At Pend d'Oreille 

 River. — Lyall. 



2. — C. LANuaiNOif^A, Nutt., (Woolly Lip-Fern), Gray, Man., 659. Hook, and Baker, Syn. 

 Fil., 139. Macoun's Cat., No. 2286. Eaton, Ferns of N. A., I, 41. Underwood, Our Nat. 

 Ferns, etc., 90. 



C. vestita, Hook., not of Swartz and Willd. 



C. lanosa, D. C. Eaton. 



C. gracilis, Mett. 



Varying in height from 2 to 8 inches, this evergreen fern grows in tufts on exposed 

 rocks, where its short creeping root-stocks form a matted mass. Stalks densely tufted, 

 slender, brownish-black, at first clothed with woolly hairs but at length nearly or even 

 quite smooth ; fronds about equal to the stalks in length, OA'ate-lanceolate in outline, and 

 tri- or rarely bi-pinnate ; pinnae deltoid and rather distant below, but oblong-ovate and 

 crowded above ; ultimate segments crowded, round, and not more than half a line in 

 diameter, except the terminal which is obovate and larger, upper surface scantily tomeutose 

 but the lower covered with densely matted, whitish-brown, woolly hairs ; iudusia very 

 narrow and formed of the almost continuous unchanged margins of the pinnules. 



Among specimens of this fern from British Columbia was a form with the divisions, 

 from the primary pinntc down to the ultimate pinnules, rather distant, makins" the frond 

 in part quadripiunate ; final divisions very minute, being less than half the size commonly 

 seen. In some plants the whole frond presented this lax appearance, while in others only 

 the lower pinnae showed it, the rest of them being as in the typical form. Bifurcation at 

 the apex of the frond is not xincommon in this fern. 



The range of this plant in Canada is limited to British Columbia and the eastern base 

 of the Rocky Mountains in the N. "W. Territory. Abundant on ledges of rock between 

 Morley and Old Bow Fort on the left bank of Bow River, N. "W". T. ; crevices of rocks near 

 Limestone Point on the North Thompson River, B. C. — Macoun. Rattlesnake Bluff, Black 

 Canyon, above Ashcroft, B. C. — A. J. Hill. Alpine woods, Rocky Mountains. — Dnmmond. 

 New Caledonia, Northern British Columbia, and north-west coast. — Douglas. 



G-enus IV. — PELLJÎA, Link, Cliff-Beake. 

 * Fronds thin, veins readily seen. 



1.— P. GRACILIS, Hook., (Slender Cliff-Brake), Gray, Man., 659. Hook, and Baker, Syn., 

 Fil, 145. Macoun's Cat., No. 2288. Fowler's N. B. Gat., No. 1^1. Watt, Can. Nat., IV, 

 363. Eaton, Ferns of N. A., II, 65. Underwood, Our Nat. Ferns, etc., 93. 



Pteris gracilis, Mx., Fl. Bov.-Am., II, 262. Pursh, II, 668. Swartz, Syn. Fil., 99. Hook., 

 Fl. Bor.-Am., 11, 264. 



Pteris Stelleri, Gmelin. 



Pteris minuta, Turcz. 



Allosorus gracilis, Presl. Grey, Man., ed. 2nd, 591. 



A. SteUeri, Ruprecht, Lawson, Can. Nat., I, 272. 



A. crispus, var. SteUeri, Milde. 



Cheilanthes gracilis, Kaulf. 



