. A monograph of lichens found in Britain; being a descriptive catalogue of the species in the herbarium of the British Museum. Lichens. 112 tICHENACEI. [bjeomtces. This is at once distinguished by the colour and form of the apothecia and by their internal structure. The thallus, when sterile, often spreads extensively, and is then more continuous and aspersed with large rosy- white or white cephalodine granules, when it is Variolaria terricola Tayl. in Mack. Fl. Hib. ii. p. 115. The apothecia are not common in this country; but the spermogones are frequent on otherwise barren thalli. They are
. A monograph of lichens found in Britain; being a descriptive catalogue of the species in the herbarium of the British Museum. Lichens. 112 tICHENACEI. [bjeomtces. This is at once distinguished by the colour and form of the apothecia and by their internal structure. The thallus, when sterile, often spreads extensively, and is then more continuous and aspersed with large rosy- white or white cephalodine granules, when it is Variolaria terricola Tayl. in Mack. Fl. Hib. ii. p. 115. The apothecia are not common in this country; but the spermogones are frequent on otherwise barren thalli. They are somewhat large, tuberculiform, at first covered by the cortical layer, the conceptacle blackish above, with elongate jointed sterigmata and straight spermatia 0,005 mm. long, scarcely 0,001 mm. thick. Hah. On sterile gravelly or turfy soil on upland moorlands.—Distr. General, though not common in a fertile state, in most of the moun- tainous and more hilly tracts of Great Britain and Ireland.—^B. M.; Sufiblk; Epping Forest, Essex; Toy Hill, Kent; Lyndhuist Moor, Hants; St. Breock Down and Tregawn, Cornwall; Montgomeryshire; Cader Idris, near Barmouth, and Aberdovey, Merionethshire; Wapley Hill, Herefordshire; Cleveland, Yorkshire ; the Cheviots, Northumber- land. New Galloway, Kirkcudbrightshire; Leadhills, Lanarkshire; Achosragan Hill, Appin, Argyleshire; SheriiFmoor, Stirling; Glen Lochay, Ben More, Craig Tulloch, and Ben Lawers, Perthshire; Baldovan Woods and Sidlaw Hills, Forfarshire; Glen Dee, Braemar, Aberdeen- shire ; Glen Nevis, Inverness-shire. Near Clonmel, Co. Tipperary. B. ICMADOPHILA (Travis, in Mass. Eich. (1852) p. 26).—Apo- thecia sessile, lecanoroid, at length biatorine, solid Fig. 31. BtBomyees eeruginosus DC—a. Section of an apothecium (in dry state), X30. b. Two thecse and a paraphysia, x350. o. Spores, x500. d. Section of a spermogone, x30. e. Sterigmata and spermatia, Please note that these images are extracted from scanned page im
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectlichens, bookyear1894
