26 



POLYPODIACEAE 



2. Cheilanthes siliquosa Alaxon. 

 Indian's Dream. Figf. 48. 



densum 

 16: 120. 



Brack, in Wilkes, U. S. Explor. 

 1854, not Cheilanthes densa Fee, 



Onychium 



Exped. 



1852. 

 Pellaea densa Hook. Sp. Fil. 2: ISO. Pl. 125. B. 1858. 

 Crvftogramma densa Dials, in Engl. & Prantl, Pflan- 



'zenfam. l"*: 280. 1899. 

 Cheilantlies siligiiosa Maxon, Am. Fern Tourn. 8: 116. 

 1918. 

 Rhizome multicipital, the divisions obhque, 

 cespitose; scales acicular, brownish-castane- 

 ous, thick, lustrous, subentire. Fronds many, 

 crowded, 7-30 cm. long; stipes 5-22 cm. long, 

 nearly naked, brownish-castaneous, lustrous, 

 fle.xuous ; blades usually fertile, broadly ovate, 

 deltoid-oblong, or subpentagonal, 1.5-8 cm. 

 long, 3-pinnate below, naked, glabrous ; pinnae 

 few, close, oblique, the basal ones broadly 

 triangular, inequilateral ; segments narrowly 

 linear, mostly 5-15 mm. long, 1-1.5 mm. broad, 

 mucronate, close; margins sharply revolute, 

 giving rise ~to a continuous delicate erose- 

 denticulate indusium, the sporangia of adjacent 

 sori crowded transversely in a continuous 

 line; sterile fronds few, the segments broader, 

 callous, serrate. 



Crevices of cliffs and rock outcrops, Canadian and Transition Zones; San Luis Obispo and Tulare Coun- 

 ties, California, north in the mountains to Vancouver Island, east to northern Montana, Wyoming, and Utah; 

 also in Gaspe County, Quebec, and Grey County, Ontario. Type locality: Rogue River region, Oregon. 



3. Cheilanthes viscida Davenp. . ^ - - ^ 



Viscid Lip-fern. Fig. 49. 



Cheilantlies liscida Davenp. Bull. Torrey Club 6: 191. 1877. 



Rhizome massive, nodose or multicipital, the divisions 

 subglobose, conspicuously paleaceous; scales tufted, linear, 

 long-attenuate, 6-8 mm. long, less than 1 mm. broad, flac- 

 cid, crispate, flexuous, bright castaneous. Fronds numer- 

 ous, erect, fasciculate, 10-23 cm. long; stipes 4-10 cm. 

 long, slender, fragile, dark brown, beset (like the blades) 

 with sessile or short-stalked viscid glands, the rachises 

 bearing also a few curved moniliform hairs; blades linear- 

 oblong, acute, 5-14 cm. long, 1.5-3.2 cm. broad, 2-pinnate; 

 pinnae spreading, deltoid to ovate-deltoid, the lower 2 or 3 

 pairs distant, often stalked ; pinnules obliquely pinnatifid, 

 with concealed midribs, the segments distant, short, de- 

 current, shallowly incised, the lobes or teeth minute ; sori 

 few-sporangiate, solitary on the ultimate lobes, the round- 

 ish or acutish tips reflexed or not; leaf tissue delicately 

 herliacecus, dull grayish green. 



Shaded crevices of rocks, Lower and Upper Sonoran Zones; 

 southern California, from the Panamint Mountains to the western 



borders of the Colorado Desert. Type lo- 

 calitv: White Water Caiion, Colorado Des- 

 ert. 



4, Cheilanthes cooperae D. C. Eaton. 

 Cooper Lip- fern. Fig. 50. 



Cheilanthes cooperae D. C. Eaton, Bull. Torrey Club 6: 33. 1877. 



Rhizome short, thick, ascending, noticeably paleaceous at the apex; 

 scales tufted, linear-acicular, 4-7 mm. long, castaneous or darker, 

 translucent and concolorous, or with a dark narrow stripe toward the 

 filiform tip. Fronds numerous, clustered, erect-spreading, 5-22 cm. 

 long; stipes 1-7 cm. long, often thickish, dark castaneous, like the blade 

 thickly beset with white or pale tawny, flattish, septate, mostly gland- 

 tipped hairs ; blades narrowly oblong to deltoid-oblong or lance-ovate, 

 acutish, 4—15 cm. long, 2-4.5 cm. broad, 2-pinnate; pinnae mostly ovate- 

 oblong, obtuse or acutish; pinnules pinnately cleft, the larger ones with 

 2 or 3 pairs of oblique, cuneate lobes, these shallowly bifid or crenate ; 

 sori 1 or 2 to a lobe or crenation. the tip recurved or not; leaf tissue 

 delicately herbaceous, grayish green. 



Deep crevices of cliffs. Upper Sonoran and Transition Zones; El Dorado County 

 southward to near San Bernardino, California; reported from Mount Shasta. 

 Type locality: near Santa Barbara, California. 



