40 COLLEMACET. [COLLEMA. 
granulate at the circumference, blackish-green or black. Apothecia 
small, reddish, the margin somewhat tumid ; spores ellipsoid, 0,020 
-24 mm. long, 0,008-13 mm. thick (or sometimes rather smaller), 
paraphyses slender, scarcely articulate—Nyl. Syn. i. p. 104 ; 
Carroll, Journ. Bot. 1866, p. 22; Cromb. Lich. Brit. p.4; Leight. Lich. 
FI. p. 17, ed. 3, p. 16.—To this apparently is referable C. maritemum 
Tayl. Hook. Journ. Bot. 1847, p. 194. 
In a moist state, when not fully developed, this might readily be taken 
for a Nostoc. The thallus, which is variable, is closely agglutinate to 
the substratum, with the lobes corrugato-difform, plicate, appressed, and 
usually more or less verrucoso-granulose. The apothecia, though nume- 
‘yous, are inconspicuous in the dry:plant, being submersed in the small 
thalline verrucee. The spermogones are not unfrequent, with simple 
cylindrical sterigmata ; spermatia thin, obtuse at either apex, 0,0025 mm. 
long, scarcely 0,001 mm. thick. 
Hab. Among mosses on the ground in maritime and upland districts. 
—Distr. Apparently local and rare in S.W. England, N. Wales, the 8.W. 
Highlands, Seotland, and in 8.W. Ireland.—B. M.: Lipsom Hill, near 
Plymouth, Devonshire ; Cheddar Cliffs, Somersetshire ; near Barmouth, 
Merionethshire; near Kendal, Westmoreland. Appin, Argyleshire. 
Dunkerron, co. Kerry. 
2. C. chalazanodes Nyl. Flora, 1869, p. 293.—Thallus ditformi- 
lobate or laciniate, crenulato-lobed at the margins, dark-green or 
blackish. Apothecia small, reddish, the thalline margin tumid ; 
spores in clavate thece, ellipsoid or subglobose, small, 0,012-17 
mm. long, 0,008-15 mm. thick. — Cromb. Journ. Bot. 1869, 
p- 105; Lich. Brit. p. 4; Leight. Lich. Fl. p. 17, ed. 3, p. 16. 
This is distinguished from the preceding species, to which it is closely 
allied, by its much smaller and often subglobose spores. In the few 
British specimens seen, the apothecia are numerous, but no spermogones 
are visible. 
Hab. Among mosses on old walls in wooded upland tracts.— Distr. 
Very local and scarce in W. England, though it may occur in mountain- 
ous districts, as in Scandinavia, where it was discovered.—B. M.: Bradley 
Wood, Newton Bushell, S. Devon; Coln Rogers, Gloucestershire. 
3. C. myriococcum Ach. Lich. Univ. (1810) p. 638.—Thallus 
imbricato-lobed, or at length almost crustaceo-difform, olive-green 
or blackish ; lobes crowded, complicate, crisp. Apothecia minute, 
numerous, aggregate in thalline tubercles, somewhat concave, red- 
dish, the thalline margin tumid; spores in cylindrical theca, 
globose or subglobose, 0,009-12 mm. in diameter when globose, 
or 0,011-12 mm. long, 0,009-10 mm. thick, when subglobose. 
—Nyl. Syn. i. p. 104, t. iv. f. 21; Cromb. Journ. Bot. 1874, 
p. 146; Leight. Lich. Fl. ed. 3, p. 16.—Lichen myriococcus Ach. 
Prodr. (1798) p. 127.— Brit. Exs.: Cromb. n. 3. 
This differs from C. chalazanum chiefly in the thallus being larger, the 
lobes more develcped, the apothecia more aggregate, and the spores more 
