320 BOTANY. 



deltoid-lanceolate or oblong, pinnules next the main rachis often lobed ; all 

 of them very rough on both surfaces, with short harsh simple or forked 

 whitish hairs ; involucres continuous, the edges crenate. — Syn. Fil. p. 148. 

 Cheilanthes aspera, Hooker, Sp. Fil. ii, p. Ill, t. cviii, A. 



New Mexico and Western Texas, Charles Wright. This Fern is peculiar among our species of the 

 genus in having a harsh scabrous surface. Hooker noticed that the margins of the fertile pinn® are 

 transversely waved, and that the often forked or tripartite hairs are most abundant on the top of these 

 undulations. One specimen shows a rootstock as thick as a crow's quill, an inch or so in length, and 

 branched near the growing end. 



-i--t- Frond hi — tri — quadripinnate, ultimate segments oval or cordate. 



Pellaea andromedsefolia, Fee. 



Rootstock slender, creeping, covered" with narrow glossy scales ; 

 stalks scattered, erect, wiry, pale-brown, smooth and naked, except for the 

 narrow chaff at the base, 2-12 inches long, about equalling the ovate 

 usually tripinnate but sometimes 2-4-pinnate fronds ; primary pinnaa rather 

 distant, spreading ; ultimate pinnules 2-5 lines long, petiolulate or sessile, 

 oval, slightly cordate and emarginate, fleshy-coriaceous, the fertile ones 

 often with the edges revolute to the midrib ; veins numerous, parallel, and 

 sometimes producing narrow ridges on the upper surface ; involucres her- 

 baceous, with a narrow whitish edge. — Genera Filicum, p. 129. Pteris 

 andromedcefolia, Kaulfuss, Enuineratio Filicum, p. 188. Allosorus androme- 

 dafolius, Kaulf. in Kunze, Analecta Pteridographise, p. 18, t. 11. 



California, mostly in the Coast Ranges, but collected in the " mountains near Live Oak Creek " 

 and one or two other places (in Arizona?) by the Botanists of the Mexican Boundary Commission. Mex- 

 ico? Also in Chile, but the Chilian plant has been described as a distinct species (P. myrtillifolia, Met- 

 tenius & Kuhn) upon insufficient grounds. Kunzo also reports a station in Cape Colony. The stalks 

 are commonly very straight, the rachis rarely a little flexuose, and their color is said to be reddish-brown 

 with a delicate bloom when fresh, though dried plants show a nearly straw-colored rachis. A pubescent 

 form was noticed by Nuttall. 



Pellasa pulchella, F6e. 



Rootstock very short, stout, nearly erect ; stalks densely clustered, 3-8 

 inches long, chaffy at the base with narrow crisped scales, nearly black 

 and polished, as are the rachis and all its divisions ; frond as long as the 

 stalk, or longer, triangular-ovate in outline, quadripinnate below, less com- 

 pound upwards ; ultimate pinnules numerous, very small, 1-3 lines long, 

 oval or commonly cordate-ovate, obtuse, distinctly stalked, coriaceous, 

 smooth, the edges often very much rolled in; involucre herbaceous. — 



