LEPTOGIUM.] COLLEMIU. "^ 



Carnarvonshire; Beaumnris, Island of Anglesea. ; near (Jsvrestry, Shrop- 

 shire ; Teesdale. Durham : Kentmere, Westmoreland. New Galloway, 

 Kirkcudbrightshire ; Ben Cruaclian and Loch Creran, Argyleshire ; lien 

 Lawers and near St. Fillaiis, Perthshire ; Craig Guie, Braemar, Aber- 

 deenshire. Luggelaw, co. Wicklow ; Killarney, co. Kerry ; Kylemore, 

 CO. Galway. 



Siibgen. 2. EULEPTOGirM Cromb. Journ. Bot. 1874, p. 133.— 

 Thallus more or less foliaceo-membranaccous, ceUulari-corticate on 

 l)oth surfaces ; internally with entangled tubular cavities ; gonimia 

 raoniliform. Apothecia lecanorine ; spores variously divided. 



Fi- 18. 



Leptogium lacerum Yr.—a. Fragmeut of a tballine lacinia showing the fimbri- 

 ature, X 30. b. Texture of section of the thallus, X 200. c. Section of a 

 young apothecium in dry state, X 30, and <•', the same of an older apothe- 

 cium. d. Tbeca with a" paraphysis. X 3.50. c. Spores, X o(X). /. Section 

 of thallus (moistened) with two spermogones, X 30. g. Sterigmata and 

 spermatia, X 500. 



12. L. lacerum Gray, Nat. Arr. i. (1821) p. 401.— Thallus thin, 

 lacero-laciniate, longitudinally rugulose, olive-brown or leaden ; 

 laciniae subimbricate, subascending, crisp and ciliato-dentate at the 

 margins. Apothecia small, scattered, concave, brovmish- or pale- 

 red, the thalline margin thickish, entire ; spores ovoid, or narrowed 

 at cither apex, irregularlv murali-locular, 0,034-48 mm. long, 

 0,010-10 mm. thick.— XyL Syn. i. p. 122, t. ii. f. : Mudd, Man. 



