334 BOTANY. 
or triangular-lanceolate, usually fully bipinnate; pinnz broadly oblong- 
lanceolate, the lowest ones broadest and scarcely shorter than the middle 
ones; pinnules oblong, incised or doubly serrate, with spinulose teeth, 
conspicuously veiny; sori large, nearer the midrib than the margin; 
indusia firm, convex, orbicular, with a very narrow sinus, the edge bearing 
short-stalked glands.—Aspidium argutum, Kaulfuss, Enum Fil. p. 242. 
Lastrea rigida, ‘larger and more developed,” Moore, Nat Print. British Ferns. 
Nephrodium rigidum, % var. Americanum, Hooker, British Ferns, t. 16; Sp. 
Fil. iv, p. 120. 
Rocky cafions ard hillsides of California, apparently rare east of the Coast Ranges, but extending 
northward to Umqua Co., Oregon ( Wilkes Expl. Exped.), and southward to the Sierra Madre, Northwestern 
Mexico. It is also given by J. Smith in the Botany of the Herald as found in Panama and the 
Hawaiian Islands, but I suspect there is some error of either identification or locality. This is related 
to the last species, and small forms have been mistaken for it, but it has a broader and more compound 
frond, not or but very slightly narrowed towards the base; the under surface is somewhat glandular, 
and the plant very fragrant in drying; the teeth of the segments are softly spinulose, whence the name 
chosen by Kaulfuss, and the involucres have a very evident glandular margin. Hartweg’s No. 2039, 
from near Monterey, is this species rather than Filix-mas, to which it has at times been referred. Our 
Fern differs from the European A. rigidum, with which is was united first by Moore and then by Hooker, 
only in the considerably greater size and the more decidedly spinulose teeth, and I see no good reason 
for still considering it distinct. The fragrance is equally characteristic of the European plant, and 
persists many years in herbarium specimens. 
ASPIDIUM SPINULOSUM, var. DILATATUM, a form with dark scales on the stalk and smooth 
indusia, occurs in Oregon, but does not come within our limits. 
§2. POLYSTICHUM. 
Indusium orbicular and entire, peltate, fixed by the depressed centre: 
Fronds evergreen, subcoriaceous; pinne and pinnules usually auricled on the 
upper side at the base, and mucronately serrate; veins free. 
*Fronds simply pinnate. 
Aspidium Lonchitis, Swartz. 
Utah, in the Wahsatch (Watson), and near Spring Lake, Parry. From British Columbia north- 
ward, and eastward to Montana, Lake Superior, and Canada. Greenland. Northern Europe and Asia, 
and in the high mountains of Southern Europe and Northern India. 
Aspidium munitum, Kaulfuss. 
Rootstock stout; stalks often a foot long, chaffy, like the rachis, with 
abundant glossy-brown scales; fronds growing in a crown 1-4 feet long, 
or even longer, lanceolate in outline, tapering slightly towards the base, 
pinnate; pinne very many, linear-acuminate, 3-4 inches long, subcoria- 
