B-EOMYCES.] BJEOMYCETET. 113 



4. B. aeruginosus DC. Fl. Fr. ii. (1805) p. 343. Thallus effuse, 

 granulate-rugose or subleprose, glauccscent or whitish (K + yellow). 

 Apothecia elevato-superficial, moderate, or somewhat large, obso- 

 letely rugulose, sublecanorine with evanescent thalline maigin, or 

 at length biatorine, flesh-coloured, soft (K + orange) ; spores 6na3 

 or 8noc, fusiform, 1-3-septate, 0,013-27 mm. long, 0,0046 mm. 

 thick ; hymenial gelatine faintly bluish with iodine. Lichen ceruyi- 

 nosus Scop. Fl. Carn. i. (1760) p. 78. Icmadophila ceru/jinosa 

 Mudd, Man. p. 64, t. i. f. 13. Bceomyces icmadophiliis Cromb. Lich. 

 Brit. p. 16 ; Lcight. Lich. Fl. p. 54, ed. 3, p. 52. Lecidea ictna- 

 dophila Gray, Nat. Arr. i. p. 473; Hook. Fl. Scot. ii. p. 39; Sm. 

 Eng. Fl. v. p. 184. Lichen icmadophila Erhr., With. Arr. ed. 3, iv. 

 p. 15. Lichen ericetorum Huds. Fl. Angl. p. 443 pro parte ; Eng. 

 Bot. t. 372. Brit. Exs. : Leight. n. 209 ; Mudd, n. 32 ; Cromb. 

 n. 118 ; Larb. Lich. Hb. n. 44. 



This plant in moist shady localities is of a beautiful green colour, 

 becoming yellowish when long preserved in herbaria. The apothecia are 

 generally numerous, often much crowded and almost confluent, undu- 

 late when dry, rarely substipitate, occasionally entirely lecanorine, with 

 depressed thalliue margin. The spermogones are inclosed in the thalline 

 granules in colourless couceptacles ; the spermatia slender, somewhat 

 thickened at either apex, 0,004 mm. long, scarcely 0,001 mm. thick. 

 Though much difference exists as to the place of this species, it is anato- 

 mically and chemically a liceomyces, as observed by Nylander, Lapp. Or. 

 p. 108. 



Hub. On moist turfy soil, on decayed Sphagna in bogs, and on putrid 

 trunks of trees, in upland and subalpine districts. Distr. Somewhat 

 local, but plentiful where it occurs, in the hilly tracts of England ar.d North 

 Wales, more frequent in those of Scotland, especially among the Gram- 

 pians ; rare in S. and W. Ireland. B. M. : Near Tunbridge AVells, Kent ; 

 Ardingly, Sussex ; Ampthill, Bedfordshire ; Charmvood Forest, Leices- 

 tershire ; Matlock, Derbyshire ; Cwm Bychan, Merionethshire ; Island 

 of Anglesea ; Guisboro' Moor and Houghton Moor, Cleveland, York- 

 shire ; Teesdale, Durham ; Alston Moors, Cumberland. New Galloway, 

 Kirkcudbrightshire ; Pentland Hills and Swanston Hill, near Edinburgh ; 

 Appiu, Argyleshire ; Blairdrinumond, near Stirling; Glen Falloch, Ben 

 Lawers, and Killin, Perthshire ; Sidlaw Hills and Clova, Forfarshire ; 

 Glen Callater and Morrone, Braemar, Aberdeenshire ; liothiernurchus 

 and Glen Nevis, Inverness-shire ; near Lairg, Sutherlandshire. Pass of 

 Keiruan Eigh-Wist and Googaumbarra, co. Cork ; Dunkerron, co. Kerry ; 

 Connemara, co. Galway. 



Tribe IV. P I L P H K E I Nyl. ex Cromb. Grevillea, v. 

 (1876) p. 77. 



Thallus formed of rigid, cylindrical, fistulose or internally arach- 

 noid and externally granulose podetia, usually also granulose or 

 pulveraceous at the base. Apothecia terminal, capituliform, black ; 

 paraphyses prolonged directly into the hypothecium ; spores 8nuo, 

 ellipsoid, simple, colourless. Spermogoiics with nearly simple ste- 

 rigmata. 



The single genus of which this tribe consists has been arranged by 



i 



