48 COLLEMACET. | COLLBMA, 
0,016-24 mm. long, 0,007-11 mm. thick.—Borr. in Eng. Bot. Suppl. 
t. 2716. f.1; Sm. Eng. Fl. v. p. 212; Tayl. in Mack. Fl. Hib. 
ii. p. 110; Mudd, Man. p. 40; Cromb. Lich. Brit. p. 4; Leight. 
Lich. Fl. p. 21, ed. 8, p. 19.—Lichen crispus Ach. Prodr. (1798 
p. 126. Lichen crispus of our older authors belongs to C. cheeleum. 
—Brit. Exs.: Leight. n. 106; Mudd, n. 2. 
This is allied to C. pulposum, but differs in the form of the granulate 
lobes, and especially in the crenato-granulate thalline margin of the 
apothecia. Pom C. cheileum, which in fructification it closely resembles, 
it is distinguished by the central lobes being more developed, erect and 
aggregate. The apothecia are usually central, generally crowded, and 
sometimes large. 
Hab. Among mosses on gravelly soil, and the tops of old walls, 
chiefly in upland districts.— Distr. Local and scarce, at least in a fertile 
condition, in the Channel Islands, Great Britain and Ireland.—B. M.: 
Shores of the Island of Herm. The Downs, Sussex; St. Lawrence and 
Sandown, Isle of Wight; near Torquay, S. Devon; St. Minver, Corn- 
wall; Windsor Great Park, Berkshire ; Coatham Marshes, Cleveland, 
Yorkshire. Appin, Argyleshire ; Craig Tulloch, Blair Athole, Perthshire. 
Killarney and Dunkerron, co. Kerry. 
Subsp. C. ceranoides Nyl. ev Cromb. Grevillea, xv. (1886) p. 12.— 
Lobes in the centre imbricate, ascending, dilated upwards, some- 
what proliferous, fastigiate. Apothecia with subentire or granulate 
margin; spores 3-septate, 0,017-25 mm. long, 0,008-9 mm. thick. 
—Collema pulposum var. ceranoides Cromb. Journ. Bot. 1874, 
p. 833; Leight. Lich. Fl. ed. 3, p. 18. Collema ceranoides Borr. in 
Eng. Bot. Suppl. (1831) t. 2704. f. 2; Sm. Eng. Fl. v. p. 209; 
Mudd, Man. p. 41 pro parte; Cromb. Lich. Brit. p. 6; Leight. 
Lich. Fl. p. 28. 
Having regard merely to the imperfect portion of the plant figured in 
E. B. Suppl., this might be taken for a well-marked species. More 
perfect specimens, however, in which the lobes at the circumference are 
depressed and mote typical, show that it is to be viewed rather as a sub- 
species of C. créspum, well distinguished by the thallus and apothecia. 
It is usually seen only in a sterile condition. 
Hab. On cretaceous and calcareous soil, sometimes on shell-sand, in 
maritime and upland tracts—Distr. Rather local and scarce, in the 
Channel Islands, and 8. and W. England.—B. M.: Island of Herm, 
Henham, Essex; Shiere, Surrey; The Downs, Halmaker, and. Rotting- 
dean Cliffs, Sussex; Babbicombe Downs, Devonshire; St. Minver and 
near Penzance, Cornwall; Bathampton Downs, Somersetshire; near 
Cirencester, Gloucestershire; Malvern, Worcestershire. 
Form cristatulum Nyl. ev Cromb. Journ. Bot. 1874, p. 334.— 
Thallus microphylline, lobes crowdedly granulato-crenate. Apothecia 
small; spores 0,016-21 mm. long, 0,007-9 mm. thick.— Leight. 
Lich. Fl. Suppl. p. 468, ed. 3, p. 20. 
This is a smaller and less developed state of C. ceranoides, from which 
probably it ought not to be distinguished. As in the type, the apothecia 
are but sparingly present. 
