193 
Hab., on fallen birch, White Top Creek, Mrs. Britton and Miss 
Vail 9 plants, without perianth. 
This delicate little species, which has been kindly identified by 
Herr Stephani, of Leipzig, marks the first appearance of the sub- 
genus Harpa-Lejeunea in the United States. Through the kind- 
ness of Dr. Robinson, I have been enabled to compare these 
specimens with the type of the species. 
Radula complanata (L.) Dumort. Banks of+Holston River near 
Kopenhaver's Mills, alt. 2,050 ft. On Thuja occidentalis. 
Radula tenax, Lindb. Summit of White Top Mt., alt. 5,678. On 
rocks in shade. Nick’s Creek, alt. 2,800 ft. On rocks in 
shade. White Rock, alt. 4,400 ft. 
Radula obconica, Sulliv. Nick’s Creek, alt. 2,200 ft. 
Porella pinnata, Schwegr. Kopenhaver’s Mill near Marion, alt. 
2,000 ft. In a limestone Spring. floating in the water. 
Porella platyphylla, (L.) Lindb. White Top, alt. 5,300 ft. On 
trees. Hutton’s Branch, alt. 2,200 ft. At base of trees, Banks 
of the Holston River near Marion, alt. 2,100 ft., on logs. 
Dickey Creek, alt. 2,500 ft. On trees and rocks, slopes of 
Pine Mt., near Troutdale, alt. 3.500 ft. On logs and trees 
in dense woods. Very variable in the amount of branching, 
sometimes very pinnate'with short branches, at others almost 
unbranched, stems long and slender. 
Blepharozia ciliaris (L.) Dumort. Pine Mt., near Troutdale, alt. 
3,500 ft. On fallen logs. 
Trichocolea tomentella, Dumort. White Top Creek, alt. 2,800 ft. 
Slopes of Pine Mt., near Troutdale, alt. 3,500 ft. Wet bank 
near stream. Fruiting. 
Herberta adunca, S. F., Gray. Summit of White Top, alt. 5,678 
ft Abundant on wet rocks, in dense brown cushions, or on 
branches of Picea rubra. 
Bazzania deffexa (Nees.) Underwood. Summit White Top, alt. 
5,678 ft. Associated with Campylopus Virginicus and Herberta 
adunca, 
Bazzania trilobata (L.) B. Gr. Dickey Creek, alt. 2,500 ft. Wet 
banks. Bear Branch, alt. 2,200 ft. White Top Creek, alt. 
2,500 ft. White Top Summit, alt. 5,678 ft. 
