310 BOTANY. 
Tres. PTERIDEZ. 
IV. CHEILANTHES. Swartz. 
§1. ADIANTOPSIS. 
Inwolucres separate, one to each fertile veinlet. 
Cheilanthes Californica, Mettenius. 
Rootstock short, creeping, chaffy with narrow dark-brown scales ; 
stalks densely tufted, dark-brown, glossy, 4-8 inches long; frond 4 inches 
long or less, broadly deltoid-ovate, smooth on both surfaces, delicately 
quadripinnatifid [#. ¢., 4-pinnate, with all but the primary rachis narrowly 
winged]; lower pinne largest, triangular, more developed on the lower 
side; upper ones gradually smaller and simpler; ultimate pinnules lan- 
ceolate, very acute, incised or serrate, and when fruiting with usually sepa- 
rate, crescent-shaped, membranaceous involucres in the sinuses between 
the teeth, which also are often at length recurved.—Mett. iiber Cheilanthes, 
p. 44. Hypolepis Californica, Hook. Sp. Fil. ii, p. 71, t. 88. Aspidotis Cali- 
fornica, Nuttall, MS. in Herb. Hooker. 
Moist shady cafions and ravines in the Coast ranges of California, received by me only from Santa 
Barbara and Los Angeles Counties, but probably of wider range. Sonora, Mexico, Schott. A very deli- 
cate and pretty Fern, and eagerly sought by collectors. Sir William Hooker placed it in the genus 
Hypolepis, a genus of large Ferns, which are utterly unlike this plant in habit, and are really much nearer 
to Phegopteris than to Cheilanthes. The involucres are lunulate, and of a different substance from the 
lobule, at the base of which they are placed, but as the sporangia ripen this lobule is frequently reflexed, 
so as to form a sort of second involucre. 
§ 2, BUCHHILANTHES. 
Involucres more or less confluent, usually extending over the apices of sev- 
eral veinlets, but not continuous all round the segment. - 
* Segments of the frond smooth, or glandular only. 
Cheilanthes Wrightii, Hooker. 
Stalks castaneous, slightly chaffy at the base, 1-2 inches high; frond 
herbaceous, 2—3 inches long, ovate-oblong, pinnate, with about five rather 
distant pairs of deltoid bipinnatifid pinnz ; secondary pinne oblong, more 
