304 BOTANY. 
varies a good deal in outline, and in the shape of the segments, which are either obtuse or acute, entire 
or serrated. Plants found very near the sea have a somewhat thicker texture, more regularly anastomos- 
ing veinlets, and more elliptical fruit-dots, and correspond more closely with the character given by 
Kaulfuss, I was at one time disposed to think P. Californicum and P.intermedium distinct species, but 
on maturer study adopt the view of Hooker and Baker, that they are but one. 
Polypodium Scouleri, Hooker & Greville. 
Rootstock creeping, scaly; stalks pale-brown, stout; fronds very thick 
and coriaceous, fleshy when recent, broadly ovate, pinnatifid to the midrib; 
segments linear-oblong, obtuse, obscurely serrulate, the terminal one dis- 
tinct and often the longest; veinlets anastomosing regularly and forming a 
single series of large areoles; fruit-dots very large, borne near the costule 
on the upper segments. only, or towards the ends of the middle segments 
- also.—tIcon. Fil. t. 56. P. carnosum, Kellogg, Proc. Cal. Acad. ii, p. 88, 
fig. 24. P. pachyphyllum, D. C. Eaton in Amer. Jour. Sci. July, 1856, 
p- 138. 
On trees and stumps, more rarely on the ground, from Guadalupe Island (Dr. Palmer) to the 
neighborhood of Mount Shasta and Crescent City (Prof. Brewer), and northward to British Columbia. 
By far the finest of all our Polypodia ; the fronds sometimes stand over 2 feet high, fleshy, evergreen, 
and with the fruit-dots (or sori) one-fifth of an inch in diameter. When the chaff has fallen from the 
rootstocks, they are seen to be glaucous-white and finely rugose. Gen. A. V. Kautz (then a lieutenant) 
noticed it growing on Firs at Port Orford, Oregon, in 1855, at the height of 150 to 200 feet above the 
ground. It was originally described from very small specimens with 5-9 segments, but Prof. Brewer 
collected it with as many as 27 and 29. 
Il. GYMNOGRAMME. Desyv. 
Sori (fruit-dots) 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 of moderate size, and of nearly every possible shape, many 
with a hairy or tomentose surface, and some with a very beautiful white or 
yellow powdery coating to the under surface. Only two species are known 
to occur in the United States. 
Gymnogramme triangularis, Kaulfuss. 
Stalks densely tufted, slender, blackish-brown, polished, 6~8 inches 
long; fronds deltoid or 5-angled, 2-5 inches long and nearly as broad, pin- 
nate, the lower pair of pinne much the largest, triangular, bipinnatifid, the 
rest oblong or lanceolate, more or less pinnately lobed or incised; segments 
obtuse, crenated: lower surface coated with a yellow or white powder, upper 
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