BACIDIa] LECIDEAOEiE 163 



Durham ; near Portlethen, Kinoardinesliire ; Canloohan, Forfarshire ; 

 Ben Lawers, Glen Fender and Craig Tullooh, Blair Athole, Perth- 

 shire ; Upper Glen Dee, Braemar, Aberdeenshire ; Glen Nevis, 

 Lochaber, Invernessshire ; near Maoroom, Cork ; Blackwater Bridge, 

 Kerry ; Kilree and Moher, Clare ; Kylemore, Connemara, Galway. 



Var. turgida Th. Tr. Lich. Scand. p. 365 (1874).— Thallus 

 thin, effuse, crustaceous, minutely granular, light- or dark-greenish- 

 brown. Apothecia small, numerous, paler than in the species ; 

 paraphyses paler at the tips. — Scolidosporum turgidum Koerb. 

 Parerg. Lich. p. 241 (1861). Leeidea pelidna var. turgida 

 Cromb. Lich. p. 74 (1870) ; Leight. Lich. Fl. p. 345. L. pelidniza . 

 Nyl. in Flora Ivii. p. 318 (1874). L. umbrina i. turgida Leight. 

 Lich. Fl. ed. 3, p. 360 (1879) ; f. pelidniza Leight. I. c. 



Exsicc. Larb. Lich. Hb. n. 182. 



Distinguished by the lighter-coloured thallus and apothecia. 



Hab. On rocks. — Distr. Bare in maritime or upland districts in 

 S. and Central England, Wales, the N. Grampians, Scotland and 

 W. Ireland. — B. M. Near Penzance, Cornwall ; Dolgelly, Merioneth ; 

 Snowdon, Carnarvonshire ; Glen Callater, Braemar, Aberdeenshire ; 

 Kilkee, Clare ; Kylemore and Twelve Pins, Connemara, Galway. 



Var. compacta Th. Fr. I. c. — -Thallus dark-brown, almost 

 black, thickish. Apothecia very dark ; paraphyses dark-bluish- 

 green towards the apices. — Scoliciosporam compactum Koerb. Syst. 

 Lich. Germ. p. 268 (1855). L. umbrina i. compacta Leight. Lich. 

 Fl. ed. 3, p. 360 (1879). 



Hab. On rooks and walls. — Distr. Not unfrequent in England and 

 Wales, rare in the S. Grampians, Scotland and W. Ireland. — B. M. 

 Axe Edge, near Buxton, Derbyshire ; Dolgelly, Merioneth ; Ben 

 Lawers, Perthshire ; near Kylemore, Connemara, Galway. 



26. B. ascaridiella A. L. Sm. — Thallus determinate, thin, 

 opaque, rimulose, whitish (K — , CaCl — ). Apothecia very minute, 

 innate, blackish, colourless within, often with a pseudothalline 

 crenulate margin ; epithecium slightly brownish ; hypothecium 

 colourless ; paraphyses very slender, not crowded ; spores 8, 

 16 or 32 in the ascus, vermiform, acute at the apices, spirally- 

 curved, pluriseptate, 0,025-30 mm. long, 0,0015-20 mm. thick ; 

 hymenial gelatine scarcely tinged with iodine. — Leeidea ascari- 

 diella Nyl. in Flora li. p. 162 (1868) ; Carroll in Journ. Bot. vi. 

 p. 100 (1868) ; Leight. in Ann. Mag. Nat. Hist. ser. 4, i. p. 483 

 (1868) & Lich. Fl. p. 355 ; ed. 3, p. 383 ; Cromb. Lich. Brit, 

 p. 75. 



A very minute species, placed by Nylander near to Leeidea 

 leucaspis, a continental species. Examination shows that it is closely 

 allied to the preceding;- the spores are septate, not simple as 

 originally described. The small specimen seen is well fertile. 



Hab. On a calcareous rock in an upland mountainous district. — 

 B. M: Mangerton, Killarney, Kerry. 



M 2 



