5 • B. parasenia, (Ach.) Th. Fr. On trees and rails. Very com¬ 
mon. Spermatia straight, .005^ mm. long. 
b. triphragmia, Nyl. Only a single scanty specimen. Sper- 
matia .007-9 nim. long. 
6. B. (lialyta. Tuck. On pitch pine and dead wood. Rare. On 
cones ot' pitch pine, Naushon Island. 
7. B. Eliza', 'Tuck. On cypress in swamps. Rare. Exsic ., 
Lojka, n. 140. 
8. B. myriocarpa, (DC.) Mudd. On bark, dead wood, and 
stones, N. B. and Weymouth; on exposed glass, N. B.. 1881; on 
exposed leather. Nantucket, 1S83. 
9. B. polyspora, (Willey) Wain., Brazil, p. 171. On various 
trunks; on Selaginella rupestris , dead grasses, and old cowdung, 
X. B. and Weymouth. 
10. B. turgeseens, (Nyl.) Tuck. On rails, Weymouth, 1867; 
Provincetown, 1879; and N. B. 
11. B. Schaereri, De Not. On cypress and dead wood, N. B., 
1866: rare; on pitch pine, Naushon Island. 
12. B. vernicoma, Tuck. On various trees, and on rocks, N. B., 
1866: on Utnbilica ria Muhlenbergii , Russell’s Mills. 
Parasitic. 
13. B. Parmeliarillll, (Sommf.) On Parmelia Barren’, and 
saxatilis , N. B. and Weymouth. 
14. B. glaucomarioides, Willey. On Lecanora tartarea , 1868. 
Spores 4-locular, .010-16 by .005-7 mm - See Tuck. Syn . II, p. 108. 
15. B. pertusaricola, Willey. On Pertusaria com munis, Quincy, 
1869. Weymouth, 1S75 and N. B. 
** Rhizacarfion. Spores muriform, excepting n. 16. 
16. B. colliulens, (Nyl.) Tuck. On rocks. N. B. and Weymouth. 
On brick, Smith’s Neck, Dartmouth, 1S88. 
17 . B. petraea, (Plot. Kbr.) Tuck. On rocks; common. Sper- 
matia .005-6 mm. long. A plant on bricks has simply 4-locular, de- 
colorate spores .025 by .011 mm.; but it can hardly be more than an 
immature condition ot this. 
b . grandis , Flk. 
d. albinea , Tuck. 
e. lignicola. On dead wood. N. B. and Roxbury. 
