336 i BOTANY 
fibrillose; sori in two rows on the segments, nearer the midvein than the 
edge—Syn. Fil. p. 53. A. aculeatum, var. intermedium, Hooker, British 
Ferns, t. 11. 
Typical specimens were collected on the Cocst Ranger, near Santa Cruz, California, by Prof. 
Bolander, and at Ukiah by Dr. Kellogg, and with them the two following, which had best be considered 
as varictics of this world-wide and exceedingly variable species. 
Var. Californicum. 
Frond elongated, thinly coriaceous, tapering slightly at the base; 
pinne but slightly incised above the middle, more and more deeply cleft 
towards the rachis, the lowest superior segment largest, but scarcely distinct 
as a pinnule, and not at all auricled—Aspidium Californicum, D. C. Eaton, 
Proc. Am. Acad. vi, p. 555. 
Mountains near Santa Cruz ( Bolander). Ukiah, Kellogg. Frond long and narrow, as in A. munitum, 
and with similar chafliness, but incised much as in the European var. lobatum. 
ar. angulare. 
sin oblong-lanceolate, sins or not at all narrowed at the base, 
truly bipinnate; pinnules distinctly short-stalked, mostly auricled and 
slightly incised; the basal one largest and again pinnatifid; under surface 
chaffy-fibrillose—Aspidium angulare, Willd. Sp. Pl. v, p. 257. Polystichum 
angulare, Presl; Moore, Nat. Print. Brit. Ferns, t. 12 and 13. 
Mountains near Santa Cruz, Bolander. The fine specimen of this plant which came from the same 
region as the preceding forms is very closely similar to one from St. Martha’s, Guilford, England, sent me 
by Mr. Thomas Moore, The lowest pinnz are not reduced, as they are in var. Braunii (the form of 
Northern New England), and the pinnules are as distinctly separated as one ever sees them in that form, 
while they are much more incised. 
§ 3. CYRTOMIUM. 
Indusium orbicular as in § 2: fronds simply pinnate, with broad pinne; 
veinlets commonly connivent and uniting near the edges of the pinne. 
Aspidium juglamdifolium, Kunze. 
Fronds a few inches to two feet long, coriaceous, pinnate ; pinne short- 
stalked or the upper ones sessile, ovate-oblong or broadly lanceolate, the 
terminal one distinct and in small fronds the largest, the lateral ones one to 
six on each side, 2-6 inches long, one inch or more broad, sometimes acu- 
minate, entire, appressed-serrulate, smooth on both surfaces ; veins pinnated, 
the veinlets few, either free or uniting near the margin; sori scattered in 
