48 COLLEMACEI. [COLLEMA. 



0,016-24 mm. long, 0,007-11 mm. thick.— Borr. iu 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. Licli. Brit. p. 4 ; Leiglit. 

 Lich. Fl. p. 21, ed. 3, p. 19. — Liclieii crispus Ach. Prodr. (1798) 

 p. 126. Licliea crispus of our older authors belongs to C. cheilmm. 

 — BHt. Exs. : Leight. n. 106 ; Mudd, n. 2. 



This is allied to C. pnlposiim , hut differs in the form of the granulate 

 lobes, and especially iu the creuato-grauulate thalliue margin of the 

 apothecia. From C. chcileum, which in fructification it closely resembles, 

 it is distinguished by the central lobes being more developed, erect and 

 aggregate. The apothecia are usually centi-al, generally crowded, and 

 sometimes large. 



Hah. Among mosses on gravelly soil, and the tops of old walls, 

 chiefly in upland distiicts. — Dtstr. Local and scarce, at least iu a fertile 

 condition, in the Channel Islauds, 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. Miuver, Corn- 

 wall ; "Windsor Great Park, Berkshire ; Coatham Marshes, Cleveland, 

 Yorkshire. Appin, Argyleshire ; Craig TuUoch, Blair Athole, Perthshire. 

 KiUarney and Dunken-on, co. Kerry. 



Subsp. C. ceranoides Xyl. ex 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. 

 — CoIIema p)^f^P'Jsum var. ceranoides Cromb. Jouru. Bot. 1874, 

 p. 333 : Leight. Lich. Fl. ed. 3, p. 18. CoUema 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. 23. 



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 circumft^rence are 

 depressed and more t^i-pical, show that it is to be viewed rather as a sub- 

 s|)ecies of C. crisjnim, well distinguished by the thaUus and apothecia. 

 It is usually seen only in a sterile condition. 



Hab. On cretaceous and calcareous soU, sometimes on shell-sand, in 

 maritime and upland tracts. — Disfr. Eather local and scarce, in the 

 Channel Islands, and S. and W. England. — B. M. : Island of Ilei-m. 

 Henham, Essex ; Shiere, Sm-rey ; 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 iSTyl. ex Cromb. Journ. Bot. 1874, p. 334. — 

 Thallus microphylline, lobes crowdedly granulato-crenate. Apothecia 

 small ; spores 0,U16-21 mm. long, 0,007-9 mm. thick. — -Xeight. 

 Lich. Fl. Suppl. p. 468, ed. 3, p. 20. 



This is a smaller and less developed state of C. ceranoides, from w hich 

 probably it (lught not to be distinguished. As in the type, the apothecia 

 are but sparingly present. 



