286 UNITED STATES AND MEXICAN BOONDARY. 
mountains, New Mexico; Bigelow. Lyc. struthioloides, Presl. referred by Hooker, and follow- 
ing him by Dr. Torrey, to the slender variety of the above, was considered by Spring (1. c. 1, p. 32) 
a form of Lyc. tawifolium, though he says һе did not carefully examine the original specimen in 
the Imperial herbarium at Vienna. 
SELAGINELLA LEPIDOPHYLLA, Spring, 1. c. p. 12. Lycopodium lepidophyllum, Hook. Ic. Рі. 2, 
t. 162, 163. In the valley of the Rio Grande, and near the San Pedro, mostly on lime rock. 
C. Wright, No. 2114, (1851-2). 
HYDROPTERIDES. 
MARSILEA UNCINATA, 4. Braunin Sill. Jour. (2d ser.) З, p. 55. New Mexico; Dr. Bigelow, 
No. 166. 
 MamsiLEA VESTITA, Hook. & Өтеу. Іс. Fil. t. 159. бап Elceario on the Rio Grande and 
elsewhere in western Texas. С. Wright, No. 2112, (1851-2). 
MARSILEA MACROPODA, A> Braun, l. с. Western Texas and along the Rio Grande. O. Wright, 
No, 2111 (1851-2). 
AzoLLA CAROLINIANA, Willd. Sp. 5, p. 541; Torr. РІ. №. York, 2, p. 513. Rio San Antonio, 
and Rio Gila. | 
m 
