24 
11 . B. fuscorubella, (Hoffm.) On various barks, and rarely on 
dead wood. 
45. B. suffusa. Fr. On trees in swamps. Muller in Beitr. n. 
1169, considers it a var. of B. millegrana. 
46. B. Sohweinitzii, Tu ck. On various barks, and occasionally 
growing over mosses ; the margin now white pruinose. Ibxstc., Lojka, 
n - 35 - 
47. B. iltro-grisea, (Del.) Hepp. On dead branches ot red cedar, 
Fairhaven, 1863. Very rare. 
48. B. inundata, Fr. On stones near water, old bricks, and old 
mortar in walls. 
49. B. effusa, (Sm.J Hepp. On hemlock spruce and pitch pine. 
b. arceutina , Ach. On cypress and ash. Spermatia very mi¬ 
nute. 
50. B. Beekliausii, (Kbr.) Tuck. On beech, red maple, and dead 
wood. 
b. cibbrevians, Nyl. On poplar, 1885; the spores .009-15 bv 
.002-3 mm. 
51. B. iucoilipta, (Borr.) Ilepp. On trees and dead wood. Rare. 
52. B. eildocyanea, Tuck. ms. Thallus thin, contiguous, ciner- 
ascent. Apoth. blackening, minute, at first plane with a thin mar¬ 
gin, soon convex and immarginate, the hypothecium dark, the hv- 
menium coerulescent. Paraphyses conglutinate. Thekes narrowly 
clavate, the spores acicular, 4-6 locular, .022-36 by .002-4 mm - 
Spermatia .004-5 mm. long. On holly, rare. Has some resemblance 
to B. chlorosticta, but a different thallus. 
53 - 
B. 
niuscorimi, (Sw.) Tuck. 
On 
the earth. 
Rare. 
54 - 
B. 
umhrinn, (Ach.) Tuck. 
On 
trees, and 
stones in walls 
N. B. and Weymouth. Common. On exposed iron, Weymouth. 
b. compacta , Stizenb. On rails, and rarely on trees. A plant 
on white pine. N. B. and Weymouth, formerly called by me Ar 
thonia pinguis. is considered by Tuckerman to belong here. The 
spores are in wedge-shaped thekes, not spirally contorted, .018- 
27 by .004-5 mm., and the hymenium is coerulescent above. 
Thallus determinate, greenish-cinerascent. Apoth. minute, 
blackening, globose, shining when wet. It is perhaps entitled 
to a separate place. 
