26 Maxon: Notes on NortH AMERICAN PHANEROPHLEBIA 
sterile fronds, the numerous teeth being almost wholly correlated 
with those outer veinlets that extend to the margin. 
A single new specimen: 
Mexico: Ixtaccihuatl, C. A. Purpus in 1905, 1595. 
5. PHANEROPHLEBIA UMBONATA Underw. 
A unique species, not to be confused readily with any other 
of the genus. A single additional specimen has been received: 
MExico: Sierra Madre, above Monterey, Nuevo Leon, altitude 
3,000 ft., March 12, 1906, Pringle 13739. 
6. PHANEROPHLEBIA AURICULATA Underw. 
This species is noteworthy not only for its auriculate and 
often incised pinnae, but for its thin, almost membranous texture. 
The following additional specimens have been received : 
New Mexico: Van Patten’s Camp, Organ Mountains, Dojfia 
Ana County, altitude about 6,300 ft., Wooton, May 14, 1899, and 
March 5, 1902. Filmore Cafion, Organ Mountains, Dofia Ana 
County, Wooton, Feb. 28, 1904. 
_ 7. PHANEROPHLEBIA MACROSORA (Baker) Underw. Bull. Torrey 
Club 26: 213. 1899 
Aspidium juglandifolium var. macrosorum Baker, Journ. Bot. 
25: 25. 1887. 
Phanerophlebia guatemalensis Underw. Bull. Torrey Club 26: 
214. 1899. 
Complete material now at hand indicates very clearly that 
P. guatemalensis, founded upon John Donnell Smith’s no. 3241, 
collected by Heyde and Lux at San Miguel Uspantan, 
Department 
of Quiché, Guatemala, altitude 7,000 ft. 
, is identical with P. 
macrosora, which was described first as a variety by Baker based 
upon imperfect Costa Rican specimens collected by J. J. Cooper. 
Specimens of both type collections are in the National Herbarium, 
and in addition further very complete specimens from Guatemala, 
Costa Rica, and western Panama. These prove beyond all ques- 
tion the distinctness of the species as emended and indicate for it 
a probable continuous distribution along the higher mountains 
