POL Y POD I A CEM. 



Si; 



less pinnately lobed ; lower surface coated with yellow or white 

 powder, finally more or less obscured by the fruit. {Gymno- 

 gramma triangularis Kaulf.) Arizona, California, and north- 

 ward. 



VII. NOTHOL^NA R. Br. Cloak-fern. 

 Sori marginal, at first roundish or oblong, soon confluent 

 into a narrow band, without indusium, but sometimes covered 

 at first by the inflexed edge of the frond. Veins free. Name 

 from Lat. nothus, spurious, and lana, a cloak, alluding to the 

 rudimentary indusia. Includes 37 species. 



§ I. EuNOTHOL.ffiNA. Fronds not farinose beneath, scaly, 

 hairy, or tomentose. 



* Fronds simply pinnate, 

 it I. N. sinuata (Swz.) Kaulf. Rootstock short, very chaffy; 

 stipes 2'— 4' long, erect; fronds 6'— 2° long, i' — 3' broad; pinnae 

 numerous, short-stalked, roundish or ovate, entire to pinnately 

 lobed, lower surface densely scaly. Texas to Arizona. 

 <t 2. N. ferruginea (Desv.) Hook. Rootstock creeping, with 

 dark rigid scales ; stipes tufted, 2' — 4' long, wiry, blackish, woolly 

 at first; fronds 8' — 12' long, |' — i' broad, narrowly lanceolate; 

 pinnae numerous, ovate, pinnatifid, hairy above, densely tomen- 

 tose beneath, the wool at first whitish, but becoming ferruginous. 

 (JV. rufa Presl.) Texas to Arizona. 



** Fronds bi — quadripinnate. 

 \ Fronds silky-hairy above. 



3. N. Parry i D. C. Eaton. Rootstock short, scaly; stipes 

 2' — ^4' long, dark brown, pubescent with whitish jointed hairs; 

 fronds 2' — 4' long, oblong-lanceolate, tripinnate, lower pinnae 

 distinct ; segments crowded, roundish-obovate, one line broad, 

 densely covered above with entangled white hairs, beneath with 

 a heavier pale-brown tomentum. Utah, California, Arizona. 



4. N. Newberryi D.C.Eaton. (CoTTON-FERN.) Rootstock 

 with very narrow dark bristly scales ; stipes tufted, 3' — 5' long, 

 blackish-brown, woolly when young, with pale-ferruginous to- 

 mentum ; fronds 3' — 5' long, lanceolate-oblong, covered most 

 densely beneath with fine whitish hairs, tri — quadripinnate ; 

 ultimate segments roundish-obovate, ^" — J" broad. California. 



tt Fronds slightly hispid above. 



