COLLEMODIUM. | COLLEMEI. 61 
shire ; Malham Cove, Yorkshire. Bonnington Falls, near Lanark; near 
Leven, Fifeshire ; River Isla, near Ruthven Wood and Lochearn, Perth- 
shire. Ardtully, Kenmare, co. Kerry. 
6. C. glebulentum Nyl. ea Cromb. Grevillea, xv. (1886) p. 12. 
—Thallus effuse, thickly isidiose, glomuloso-diffract, sublobate, and 
membranaceous at the circumference, olive-brown or blackish ; lobes 
very small, subentire or lacerate at the margins. Apothecia and 
spermogones unknown.—Leptogiwm glebulentum Nyl. Cromb. Journ. 
Bot. 1882, p. 272. 
A peculiar plant externally diverse, but nearly allied to the pre- 
ceding. The thallus is rather thin, except where it is covered with the 
pranuloso-crustose isidia, by which it is almost obliterated, unless at the 
circumference. Apothecia and spermogones are absent in the few speci- 
mens seen. 
Hab. On moist limestone rocks in subalpine and alpine localities— 
Distr. In 8. and N. Grampians, Scotland, rare—B. M.: Above Loch- 
na-Gat, Ben Lawers, Perthshire; Craig Guie, Braemar, Aberdeenshire. 
7. C. turgidum Nyl. ew Lamy, Bull. Soe. Bot. Fr. t. xxv. (1878) 
p. 842.—Thallus thickish, roundly lobed, naked or granulate, dark- 
olive or reddish-black ; lobes turgid, rugulose, ascending and some- 
what imbricate in the centre, concave and undulato-plicate at the 
circumference. Apothecia moderate, urceolate or at length some- 
what plane, reddish-brown or dark-brown, the thalline margin 
turgid, more or less granulate; spores oblongo-ovoid, 3-septate and 
raurali-locular, 0,023-32 mm. long, 0,010-12 mm. thick.—Lepto- 
togium turgidum Nyl. Cromb. Lich. Brit. p. 10; Leight. Lich. FI. 
p. 28, ed. 3, p. 33. Collema turgidum Ach. Lich. Univ. (1810) 
p. 634; Sm. Eng. Fl. v. p. 209; Mudd, Man. p. 38.—Brit. Exs.: 
Leight. n. 257; Larb. Lich. Hb. n. 42. 
From all states of Collema pulposum or Collemodium plicatile this is 
distinguished by the peculiar sublobato-fruticulose thallus, which when 
dry appears as if minutely verruceformi-lobed. The apothecia, which 
are sessile and normally urceolate, are usually numerous. 
Hab. On limestone and brick walls, also on calcareous and cretaceous 
soil, in upland tracts.—Distr. General, though nowhere common, through- 
out England, rare in the 8.W. Highlands of Scotland, not seen from Ire- 
land.—B. M.: Dunwich, Suffolk; Chelsfield, Kent; Reigate Hill and 
Shiere, Surrey; near Hastings, Sussex; Shanklin, Isle of Wight; Ply- 
mouth, Devonshire; Wadebridge, Cornwall; Chew Magna, near Bristol, 
Somersetshire; Charfield, Gloucestershire; Sevenhampton, Wiltshire ; 
Barrington Hill and Malvern, Worcestershire ; Tetsworth, Oxfordshire ; 
near Shiffnal, Shropshire. Appin, Argyleshire. 
Var. B. depressum Cromb. Grevillea, xv. (1886) p. 12.—Thallus 
depressed, somewhat rosulate, very small, much scattered. Apothecia 
minute. 
This peculiar variety evidently depends upon the nature of the habitat, 
aud is probably a starved form of the type. Although the thallus is 
little developed, the apothecia are rather numerous. 
