NotMama. FILICES. 335 



4. P. Scouleri, Hook. & Grev. Rootstock heavier and stalk stouter than in 

 the other species : frond coriaceous, fleshy, a few inches to a foot long, broadly ovate 

 in outline, pinnatih'd to the midrib ; segments linear-oblong, obtuse, obscurely ser- 

 rulate, cartilaginous-margined, the terminal one distinct and often largest of all ; 

 veinlets regularly anastomosing, and forming a single series of large areoles with a 

 few external free veinlets : sori very large, one within each areole on the upper seg- 

 ments of the frond, sometimes also on the tips of the other segments. Ic. Fil. t. 56 ; 

 Eaton, Ferns of N. Arner. i. 193, t. 26. P. pachyphyllum, Eaton, Am. Journ. Sci. 

 2 ser. xxii. 138. P. carnosum, Kellogg, Proc. Calif. Acad. ii. 88, fig. 24. 



On trees and stumps, more rarely on rocks or on the ground, near Crescent City and Mount 

 Shasta (Brewer) ; Marin County (J/m Pcltori), and Guadalupe Island (Palmer) ; Oregon and 

 northward to British Columbia. This very fine Polypody was first described from specimens only 

 a few inches high, but it is now known to be the largest of our Pacific Coast species. 



2. GYMNOGBAMME, Desv. 



Sori oblong or linear, following the course of the veinlets and, like them, either 

 simple, forked, pinnated or variously anastomosing, without indusium. 



A large and not very natural genus, the species with fronds mostly rather small and of very 

 diverse shapes, many with one or both surfaces hairy, tomentose, or covered with white or yellow 

 waxy powder. Only two species are known to occur in the United States. 



1. Gr. triangularis, Kaulfuss. (CALIFORNIA GOLD-FERN.) Stalks densely tufted, 

 slender, blackish-brown, polished, a few inches to a foot long : fronds deltoid or 

 pentagonal, 2 to 5 inches long and nearly as broad, pinnate ; the lower pair of pinnae 

 much the largest, triangular, broadest on the lower side, bipinnatifid ; the rest oblong 

 or lanceolate, more or less pinnately lobed or incised ; segments rounded-obtuse, 

 crenated ; lower surface coated with a yellow or white waxy powder, upper surface 

 smooth or minutely granular : lines of fruit forking, bursting through the colored 

 powder, and at length nearly obscuring it. Enum. Fil. 63 ; Hooker, Fil. Exot. t. 10. 



Var. viscosa, Eaton. Frond ovate-pyramidal ; pinme rather distant ; upper sur- 

 face viscid, as if varnished ; powder of the lower surface creamy white. Ferns of 

 N. Arner. i. 16, t. 48, fig. 5. 



Common on rocky hillsides throughout California, extending northward, it is said, to Vancou- 

 ver Island, and reappearing in Ecuador. The variety is found in the southern part of the State, 

 though specimens differing from the common plant only in the white powder occur sparingly as 

 far north as Butte County. 



3. NOTHOUEETA, R. Brown. 



Sori on the veins at or near their extremities, roundish or oblong, soon more or 

 less confluent into a narrow marginal band, with no proper involucre, but sometimes 

 covered at first by the reflexed margin of the frond. Veins always free. Fronds of 

 small size, 1 to 4 times pinnate, the lower surface almost always either hairy, tomen- 

 tose, chaffy or covered with waxy powder. 



A genus of less than forty species, most abundant in dry, rocky places from New Mexico to 

 Chili, but a few are found in the Mediterranean region, in South Africa, Australia, etc., and one 

 occurs as far north as Kansas arid Missouri. Mettenius referred many of them to Gymnogramme 

 and the rest to Chcilanthes, with both of which genera this has very close affinities. 



* Fronds woolly or tomentose, especially on the lower surface. 



1. N. Newberryi, Eaton. Rootstock creeping, covered with very narrow 

 dark-brown subulate scales : stalks clustered, 3 to 6 inches long, slender, blackish- 

 brown, at first woolly : fronds as long as the stalks, lanceolate-oblong, covered, most 

 densely beneath, with a web of very fine entangled whitish hairs, 3 to 4 times pin- 

 nate ; pinna? triangular-ovate, the lowest ones rather distant, but scarcely smaller ; 

 ultimate segments crowded, roundish-obovate, one third to one half a line wide, en- 



