FERN-HUNTING IN PANAMA 5 
CHEILANTHES Wootont Maxon.—This species, lately 
described from Arizona and New Mexico material, 
extends also to western Texas, a specimen at hand 
having been collected at El Paso, by Marcus E. Jones, 
April 16, 1884, and distributed as C. Lindheimeri Hook. 
Because of their tomentulose upper surfaces, Cheilanthes 
Eatoni, C. tomentosa, and C. Lindheimeri have not 
often been confused with C. myriophylla or with the 
several species mistakenly referred to it. They were 
accordingly omitted from the recent paper! dealing 
with the United States forms associated with C. myri- 
ophylla. 
DryoptTeris Dryropreris (L.) Carist.—An extension 
of range is noted in New Mexico specimens recently 
received from the Biltmore Herbarium, collected in 
moist thickets near Chama, Rio Arriba County, Aug- 
ust 20, 1896, and distributed as No. 3136a of the Bilt- 
more series, the collector’s name not stated. The 
western area of this species has been known to extend 
from Alaska to Oregon, south in the mountains to 
Arizona and Colorado, but the plant has not hitherto 
been reported from New Mexico. 
WasHInGTON, D. C 
Fern-hunting in Panama 
ELLSWORTH P. KILLIP 
The following article relates to the more general 
features of the fern flora of the Isthmus of Panama. 
During eight months recently spent in this region I 
made extensive collections, and specimens of ferns and 
of grasses and other flowering plants have been referred 
respectively to Messrs. Maxon, Hitchcock and Standley, 
of the United States National Herbarium. A number 
1 Proc, Biol. Soc, Washington 31: 139-152. 1918. 
