312 BOTANY. 



bipinnate; pinnae very numerous, closely placed, ovate-lanceolate, J— 1J 

 inches long; the lowest pair not enlarged, but usually smaller than those 

 next following; pinnules mostly triangular-oblong, rather acute, oftenest 

 auriculate on the upper side at the base, or in larger fronds having several 

 teeth or lobes on each side ; texture rather firm, surfaces green and glabrous; 

 involucres pale, membranaceous, interrupted only by the incising of the 

 pinnules. — Amer. Jour. Sci. July, 1848, p. 87; Hook. Sp. Fil. ii, p. 89, t. 

 103 ; Fil. Exot. t. 90 (admirable). Pteris Alabamensis, Buckley, Am. Jour. 

 Sci. 1843, p. 177. Pellcea Alabamensis, Baker Syn. Fil. p. 148. 



Mouth of Rio Pecos, Dr. Bigelow. Lower Rio Grande, Scliotl. Alabama aud Tenmssee to the 

 borders of Virginia. Tbis pretty little Fern is more slender than 0. microphylla, and has narrower and 

 more acute pinnules and paler involucres, but is nevertheless so closely related to it that Sir William 

 Hooker had grave doubts of its distinctness. In removing it to the genus Pellcea, Mr. Baker has certainly 

 separated it from its nearest allies. 



** Frond someivhat hairy and glandular, but not lomentose. 



Cheilanthes leneopoda, Link. 



Stalks 3-4 inches long, pale straw-color, stout for the size of the frond, 

 chaffy at the base with soft narrow rusty scales ; frond about 3 inches 

 long, deltoid-ovate, at the base 4-pinnate, gradually simpler upwards, every- 

 where glandular-puberulent ; lowest pair of pinnae unequally deltoid-ovate; 

 upper ones oblong; secondary ones oblong, short-stalked; ultimate ones 

 divided into minute rounded lobules, which when fertile are strongly revo- 

 lute, concealing the sporangia. — Fil. Sp. Hort. Berol p. 66 ; Mettenius, fiber 

 Cheilanthes, p. 30. 



Uvalde Caiion, Kio Nueces, Texas, Mrs. M. J. Young, 187C. Also found in Mexico. Though not 

 yet discovered within the limits assigned to the present work, I have thought best to include this species, 

 as it is a very recent addition to the Ferns of the United States, and will, with very little doubt, be found 

 before long in New Mexico or Arizona. From C. vlscosa, Kaulf., under which it is mentioned in Species 

 Filicum, it differs by having a stouter and very much paler stalk (nearly black in the other), and a rather 

 smaller and more rigid frond. Its general shape aud composition are much the same as in C. Califomica, 

 but the plant bears a lax glandular pubescence, and has rounded very obtusj ultimate segments. C. 

 viscosa is attributed to New Mexico in Species Filicum, but I have never seeu any specimens from that 

 Territory. The above notes will serve to distinguish it, if collected. 



Cheilanthes Cooperae, D. C. Eaton. 



Stalks densely tufted, variable in length, brownish, fragile, hairy, 

 like the frond, with entangled or straightish nearly white articulated often 

 gland-tipped hairs; frond 3-8 inches long, ovate-lanceolate, bipinnate; the 



