ClieilaiUhes. FILICES. o 9 h. 



00 t 



deltoid-ovate, delicately quadripinnatifid ; the upper portion of the main rhachis and 

 all its divisions with a narrow herbaceous border; lower pinuic much the largest 

 triangular-ovate, more developed on the lower side ; upper pinniw gradually smaller 

 and simpler ; ultimate pinnules lanceolate, very acute, incised or serrate ; when 

 fruiting, with mostly separate crescent-shaped membranaceous involucres in the si- 

 nuses between the teeth, which are often at length recurved. — Cheilanthes, 44; 

 Eaton, Ferns of :N". Amer. i. 45, t. G, hg. 2. llypolepis Californica, Hooker, Sp.' 

 Fil. ii. 71, t. 88, A. 



In moist ravines and shady canons, not rare in the Coast Ranges of the southern counties, and 

 also sent from near Santa Cruz by Bolander, and from Sonoma County by W. A. T. titration, 

 who finds it covering an immense rock of sandstone on Dry Cieek, a branch of Russian River ; 

 Sonora, Mexico, SchoU. This is a very deUcate little fern, with evident relationship to C. Schim- 

 jjcri, and having very little hi conmion with the genus Hypolepis, in which it is placed by 

 British writers. 



§ 2. Involucres more or less confluent, usually extending over the ajnces of several 

 veinlets, but scarcely continuous all round the segment : segments not 

 head-like. — Eucheilanthes, Hooker & Baker. 



2. C. viscida, Davenport. Stalks tufted, 3 to 5 inches high, wiry, dark-brown 

 or blackish and shining, chaffy at the base with narrow bright-ferruginous crisped 

 scales : fronds herbaceous, minutely glandular and everywhere viscid, 3 to 5 inches 

 long, narrowly oblong in outline, pinnate witli 4 to 8 rather distant pairs of nearly 

 sessile deltoid bipiunatihd pinna3 5 to 8 lines long and nearly as broad ; segments 

 toothed, the minute herbaceous teeth recurved and each covering from 1 to 3 spo- 

 rangia. — Torr. Bot. Bulletin, vi. 191; Eaton, Ferns of the Southwest, 311, and 

 Ferns of K Amer. i. 85, t. 12, fig. 1. 



Downieville Battes and on bluffs at the White Water River in the Colorado Desert (Lcmmon), 

 and near San Gorgouio Pass, Parry, Lcmmon. The obvious affinity of this species is with 

 C. IVrkjhtii, from which the viscid and more dissected fronds and the herbaceous involucre abun- 

 dantly distinguish it. 



3. C. Cooperae, Eaton. Stalks densely tufted, 1 to 4 inches long, dark-brown, 

 fragile, hairy hke the frond with entangled or straightish nearly white articulated 

 often gland-tipped hairs : fronds 3 to 8 inches long, ovate or ovate-lanceolate, bipin- 

 nate, the rather distant pinnae oblong-ovate ; pinnules roundish-ovate, crenate or 

 crenately incised, the ends of the lobules refiexed and forming herbaceous invo- 

 lucres ; segments at first slightly concave, becoming flat at maturity. — Torr. Bot. 

 Bulletin, vi. 33, and Ferns of X. Amer. i. 7, t. 2, fig. 1. 



Clefts of rocks in canons and on the sides of mountains ; near Santa Barbara [Mrs. Elwood 

 Cooper, Mrs. Stanley Bagy); Santa Clara County (//. G. Isaman) ; Downieville Buttes (Lcm- 

 vion) ; near San Bernardino, Lemmon, Parry, JV. G. Wright. Related to the eastern C. vestita, 

 but in that fern the hairs are always acute, and the frond has a narrower outhne. The drawing 

 above cited does not give a good idea of the plant. 



§ 3. Ultimate segments minute, head-like ; involucre usually continuous all round 

 the margin: fronds 2 - A-piniiate, the loiver surface tomentose or scaly, 

 the covering at first ivhite, often hecoming taivny as the fronds mature.— 

 Physapteris, Presl. {Myriopteris, Fee.) 



=k Ultimate segments tomentose heneath, hut not scaly. 



4. C. gracillima, Eaton. Rootstocks creeping and assurgent, forming a dense 

 entangled mass, chafiy with narrow rigid dark-brown appressed scales : stalks slen- 

 der, dark-brown : fronds 1 to 4 inches long, linear-oblong, bipinnate or sometimes 

 partly tripinnate ; primary and secondary rliaehises bearing delicate narrow bright- 

 brown scales, as do the stalks when young ; pinnte many pairs, crowded, 3 to 6 

 lines long ; ultimate pinnules crowded, ol^long-oval, f to 1 line long, at first webby 

 above, soon smooth, beneath heavily covered with ferruginous matted wool ; invo- 

 lucres yellowish-brown, formed of the continuously recurved margin. — Bot. Mex. 



