FURTHER NOTES ON PELLAEA 93 
Uran: Mount Nebo, Aug. 15, 1905, Rydberg & 
Carlton 7742; Ogden Canyon, Ogden, Aug. 19, 1913, 
A. E. Hitchcock 1440; locality wanting, 1875, Parry 94. 
OREGON: Gayhart Buttes, alt. 2200 meters, Aug. 9, 
1896, Coville & Leiberg 301; locality wanting, 1883, 
Cusick 516. 
WASHINGTON: Yakima region, 1883, Tweedy 20. 
PELLAEA ATROPURPUREA (L.) Linx.—An extension 
of range is noted in specimens of the Biltmore Her- 
barium, recently presented to the National Museum. 
These were collected at Crestview, Walton County, 
Florida, in crevices of limestone rock, Sept. 26, 1899, 
Biltmore Herb. 755a. This species has been collected 
frequently in Georgia, but has not hitherto been known 
from Florida. 
PELLAFA ASPERA (Hoox.) Baxer.—This is one of 
the very rarest and least known of the Mexican Border 
ferns. It was described originally by Hooker, as Cherl- 
anthes aspera, on Texas specimens collected in 1849 
by Charles Wright, and has since been collected in 
only a few localities. In its specific characters 1t 1s 
highly individual, the most conspicuous peculiarity 
being its strongly scabrous upper surfaces. The rough- 
hess is due to the presence of rather numerous short, 
White, stiff hairs which arise at intervals from inflated 
conical bases in groups of two or three, following the 
course of the immersed veins. The leaf tissue of the 
living plant is presumably delicate, for the segments 
are transversely waved toward the edge, the tssue 
apparently shrinking between the veins, 1m drying, 
and about the base of the hairs. The ridges are thus 
minutely tuberculate from the presence of the = 
vated, wholly persistent, rigid hair-bases. The hairs 
crease in size and number toward the enlarged tps 
of the veins, but do not quite reach the whitish, re- 
