Notes on AMERICAN FERNS—XI 105 
the extremes of altitude observed for the ferns of the 
Appalachian Mountain system, Dr. John K. Small 
gives the maximum elevation for Asplenium montanum 
as 4500 feet, on Grandfather Mountain, North Carolina 
(Small & Heller). This is considerably exceeded by 
specimens collected in May, 1917, at the very summit 
of Mount Pisgah, North Carolina, altitude 5749 feet, 
by Mr. Frank Crayton and the writer. The species 
has been collected also at about 5000 feet in the vicinity 
of Eagle’s Nest, near Waynesville, North Carolina 
(Standley 5398) and at about 4500 feet on the upper 
slopes of Rabun Bald, Rabun County, Georgia (House 
2257), and there are several other records of above 4000 
feet. It descends to about 100 feet altitude at the 
Great Falls of the Potomac River, just above Wash- 
ington, D. C. 
NOTHOLAENA CRETACEA AN AGGREGATE.—In some 
recent notes on Notholaena® the writer has undertaken 
to show that the Mexican and United States specimens 
passing commonly as N. cretacea Liebm. actually repre- 
sent three species. As this publication is not generally 
available to Fern Society members it seems desirable to 
indicate briefly the conclusions reached. The three 
Species recognized are: N. cretacea Liebm., known only 
from a few localities in the southerly state of Puebla; 
N. neglecta Maxon, a new species known from the states 
of Coahuila and Chihuahua, and from two collections 
in the Huachuca and Mule Mountains of extreme south- 
eastern Arizona; N. californica D. C. Eaton, abundant 
in southern California and known also from a single 
locality in adjacent western Arizona and from several 
Stations in Lower California. The distinguishing char- 
acters of the three species are mentioned in some detail. 
DicRANOPTERIS FLEXUOSA AGAIN COLLECTED IN ALA- 
BaMA.—In the course of zoological collecting in Alabama 
Phere 
* Contr. U. S. Nat. Herb. 17: 601-604. 1916. 
