40 



faces scantily clothed with a coarse 

 tomentum; pinnae alt, oblong-ovate, ob- 

 tuse, lowermost somewhat distant; segs 

 roundish, terminal ones largest, 3-lobed; 

 indusia very narrow, only partially en- 

 closing the sori. Type locality: Riverside 

 (formerly part of SD) Co, Cal (Parish). 



**Fronds covered beneath with im- 

 bricated scales, not tomentose. 

 C. PENDLERI Hooker. 



Stipes 2-5' long, chaffy with minute 

 slender scales; fronds 3-4' long, ovate, 

 lanceolate, 3-pinnate; scales of primarv 

 rachis like those of stipe, those of sec- 

 ondary and ultimate rachises larger, 

 broadly-ovate, entire or nearly so, com 

 edged with w, imbricate and overlapping 

 the (one-fourth to one-third line broad) 

 subglobose ultimate segs: these are 

 naked above, com bear at center a broad 

 scale; indusium formed of the much in- 

 curved margin. Tex; Colo; Cal. 

 CHEILANTHES CLEVELANDI Eaton. 

 B 2:338. 



Stipes scattered, 2-6' long, dark brown, 

 scaly when young, at length nearly 

 smooth; fronds 4-6 long, ovate-lanceo- 

 late, 3-pinnate, smooth above, deep ful- 

 vous brown below from the dense cover- 

 ing of closely imbricate, ciliate scales 

 growing on the ultimate segs as well as 

 on the rachises; segs nearly round, l-3d 

 to y 2 ' broad, terminal ones larger, mar- 

 gin narrowly incurved. Named in honor 

 of Daniel Cleveland. 



Southern and Baja California. 



***Under surface both tomentose and 

 scaly. 



C. ELEGANS Kuhn Beitr 8. B 2:338 as 

 myriophylla. 



CHEILANTHES MYRIOPHYLLA Desv. 

 B 2:338. Z 2:131. Br 1:205 Cruz; 218 

 Rosa. 



Rtstock very short, scaly; stipes 

 tufted, 2-6' hi,, castaneous, covered with 

 pale brown scales and woolly hairs inter- 

 mixed; fronds 3-8' long, oblong-lanceo- 

 late, 3-4-pinnatifid, smooth or pilose 

 above, beneath matted-tomentose and 

 'err-ely clothed with pale brown, nar- 

 rowly ovate-lanceolate, ciliate scales, 

 ^hose of ultimate segs with long, tortu- 

 ous cilia; pinnae deltoid-ovate, narrower 

 upwards; ultimate segs minute, Y 2 " 

 hroad, crowded, inumerable, margin un- 

 changed, much incurved; very variable. 

 Synonyms: C. elegans Desv. — C. villosa 

 Dav. 



Texas: Arizona: southern and Baja Cal. 

 C. LIFDHEIMEEI Hooker. 



Rtstock long*, slender, chaffy, stipes 

 -cattered, 4-7' hi, bk'ish-brown, at first 

 covered with scales and woolly hairs; 

 fronds 3-5' long, ovate-lanceolate, 3-4- 

 • mnate; ultimate segs long, crowd- 



ed; upper surface w-tomentose. low^r 

 urface very chaffy, those of midrib cll- 

 : ate at base, those of segs more and 

 ''•"lore ciliate, passing into entangled to- 

 •lent.um. Tex: A.r. 



Section ALEUBITOFTEBIS Fee. In- 

 dusia more or les confluent; fronds fari- 

 nose below. 



C. ARGENTEA Kunze. 



Stipes densely tufted, 3-6' long, cas- 

 taneous: fronds 3-4' long, 2' broad, del- 

 toid, 2-3-pinnatifid; lower pinnae much 



r 7 OCT. 1911 



the largest, cut nearly to rachis; rachis 

 polished like stipe; upper surface naked,, 

 lower thickly covered with w powder; 

 sori num, very small. Alk. Synonym: 

 Pteris argentea S. G. Gmel, Nov Comm. 

 Ac Sci Petrop 12:519 t 12 f 2 (1 768). 

 CRYPT ©GRAMME R. Br, App Frankl J 

 767 (1823). 



Sporangia on back or near ends of 

 veins forming oblong or roundish sori, 

 which are at length confluent and cover 

 back of pinnules; sterile and fertile 

 fronds unlike, smooth. Two boreal 

 species. 



C. ACROSTICHOIDES R. Br, App Frankl 

 J 767 (1823). 



Parsley fern. Stipes densely tufted, 

 stramineous; fronds dimorphous, sterile 

 ones on shorter stalks, 3-4-pinnatifid. 

 with toothed or incised segs; fertile ones 

 long-stalked, less compound, w'th nar- 

 rowly elliptical or oblong-linear pod- 

 like segs. Alk, Mackenzie south to Cal r 

 Colo; Lake Huron. Synonyms: C. Crispa 

 f-irma americana Hook. — Allosurus ac- 

 rostichoides Spreng. 



C. STELLERI Prantl, Englers Bot Jahr 

 3:413 (1882). 



Stipes scattered, slender, 2-3' Ion?:, 

 stramineous or pale brown; fr^nis °- !' 

 long, 1-2' broad, ovate, 2-3-pinnatifi "i : 

 pinnae lanceolate- deltoid, cut to rachis 

 into a few broad, blunt, slightly-Iobed 

 pinnules; texture thinly herbaceous 

 flaccid; indusium broad, continuous 

 membranous; veins of fertile fronds 

 mostly onlv once-forked. Labrador; Alk; 

 Mass; 111; la; Pa; Colo. 



Synonyms: Pteris stelleri S. G. Game! 

 Nov Comm Ac Sci Petrop 12:519 t 12 f I 

 (1768). — Pellaea stelleri Watt, Can FiT 

 No. 2 (1869-70). — Pteris gracilis Michx, 

 Fl Bor Am 2:262 (1803). — Pellaea gra- 

 cilis Hooker, sp Fil 2:138 t 133 B (1858). 

 — Allosurus crispus stelleri Milde.- — A. 

 gracilis Presl. 



Genus PEtLAEA Link. 

 Link, Fil Sp Hort Berol 5 9 (1841). 



Sori on the upper part of veins dis- 

 tinct, or mostly forming a marginal 

 band of sporangia; sterile and fertile 

 fronds com similar, smooth. Over 50 

 species. 



Section CTKEn.OFI.ECT ON Fee. Tex- 

 ture herbaceous or subcoriaceous, veins 

 clearly visible, indusium broad, in mo^f 

 of the species rolled over the sorus till 



matnritv. 



P. BREWERI D. C. Eaton. 



Stipes densely tufted, covered with 

 narrow, crisped, fulvous chaff; fronds 

 2-6' long, simply pinnate, pinnae short- 

 stalked. 6-8 pairs, membranous, mostly 

 2-parted, upper seg larger; segs obtuse, 

 in fertile frond narrower; indusium con- 

 tinuous, pale; veins repeatedly forked. 

 Colo; Cal. 



Section ALLOSORUS Baker. Texture 

 coriaceous, veins not perceptible; indus- 

 ium broad, conspicuous. 



*Pinnules or seg's obtuse or barely 

 acute. 



I.— Fronds pinnate or bipinnate. 

 P. ATROPURFTTREA Link. 



Stipes tufted. 2-6' long, dark p; fronds 

 4-12' long, 2-6' broad, lanceolate or 



