25 
55 - B. Clllorostictil, Tuck. On cypress and hemlock spruce. 
Common. Exsic., Lojka, n. 13^. 
/>. substipitata , Stizenb. On cypress. Less common. 
56. B. chlorantlia, Tuck. On white pine, very common, and 
less frequently on other barks, rails, and stones. Exsic., Lojka, n. 
136. 
ttttt Thekes polysporous. Biatorella. 
57. B. geophana, Nyl. On naked earth. Rare. 1870. 
58. B. moriformis, (Ach.) On holly, elm, and witch hazel. 
Rare. 1876. 
59- B. canipestris, Fr. On the earth. 1874. Rare. 
60. B. albiduhl, Willey, Tuck. Syn. II, p. 130. First noticed by 
me on bark from Rhode Island, 1S78, and found on beech in N. B., 
1883. It seems to be rare, but is so small that it is easily overlooked. 
''' 61. B. resin®, Fr. On resin of white pine. [S64. 
62. B. difformis, F r. On resin of white pine, 1882. Rare. The 
reaction with iodine blue. See Wainio, Adjiim. II, p. 143, and 
Minks, Symbolce , n. 74. 
35 . HETEROTHECIUM, Flot., luck. 
1. H. porphyriteSj Tuck. On red maple in swamps. Rare. 
2. H. pezizoideum, (Ach.) Flot. On cypress and hemlock 
spruce; rarely on other trees. 1875. 
Here mav be mentioned a doubtful plant, occurring on roots of 
hemlock spruce. Thallus, none visible. Apoth. middlingsized, the 
disk Hat, reddish-brown. Reaction of the hymenium with iodine, 
blue. Spores in 8s. oblong-ellipsoid, 2-locular, brown, .029-32 by 
.014-16 mm. Its affinities seem to be with Heterothecium , but I can¬ 
not connect it with any known species. 
36 . LECIDE 4 , (Ach.) Fr., Tuck. 
x. L. tessellina, Tuck. On a boulder along wood path north of 
Turner’s pond, the only specimen in this vicinity. More abundant 
on boulders near Nantasket station, on the South Shore railroad. 
!S7q. The N. B. specimen was on the face of a very hard boulder, 
from which fragments only could be detached with a chisel. Since 
it was first seen it has about doubled in size, pushing aside and sup¬ 
planting the adjacent lichens. But it has extended slowly on the 
