B.EOMrCES.j BJEOMTCETET. 113 



4. B. aeruginosus DC. Fl. Fr. ii. (18u5) p. 343.— Thallus effuse, 

 granulato-rugosc or suUeprose, glaucescent or whitish ( K -}- yellow). 

 Apothccia elovato-superficial, moderate, or somewhat large, oLso- 

 letely rugulose, subkcanorine with evanescent thalliue maigiu, or 

 at length biatoriue, Hesh-coloured, soft (K + orange) ; spores Ouse 

 or SmiD, fusiform, 1-3-septate, 0,Ul3-27 mm. long, 0,004-G mm. 

 thick ; hymenial gelatine faintly bluish with iodine. — Lichen cernfji- 

 nosus Scop. Fl. Cam. i. (1700) p. 78, IcmadopJiila a-rujinosa 

 Mudd, Man. j). 04, t. i. f. 13. Bceonvjces icmadoph'dus Cromb. Lieh. 

 Brit. p. 10 ; Leigh t, Lich. Fl. p. 54, ed. 3, p. 52. Levidea icma- 

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

 Eug. Fl. T. p. 184. Lichen icmadojihila Erhr., With. Arr. ed. 3, iv. 

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

 Bot. t. 372.— Brit. E.VS. : 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 lecanoriue, with 

 depressed thaUine margin. The spermogones are inclosed in the thalline 

 granules in colourless conceptacles ; the spermatia slender, somewhat 

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

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

 mically and chemically a Bceomyces, as observed by Nylauder, Lapp. Or. 

 p. 108! 



Hab. On moist turfy soil, on decayed Spharjna in bogs, and on putrid 

 trmiks of trees, in upland and subalpine districts. — JJi-sfr. Somewhat 

 local, but plentiful where it occurs, in the hiUy tracts of England and Xurth 

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

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

 Ardingly, Sussex ; Ampthill, Bedfordshire ; Charnwood 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, 

 Kirkcudbrightshu-e ; Pentlar.d Hills and Swanston Hill, near Edinburgh ; 

 Appiu, ArgyleAive ; Blairdi-ummond, near StirUug ; Glen Falloch, Ben 

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

 Glen Callater and Morrone, Braemar, Aberdeenshire ; Kothiemurchus 

 and Glen Nevis, Invemess-shire ; near Lau'g, Sutherlandshire. Pass of 

 Keiiuan Eigh-Wist and Gongaumban-a, co. Cork ; Duukerron, co. Kerry ; 

 Coonemara, co. Galway. 



Tribe IV. P I L P H R E I Xyl. e.r Cromb. Grevillea, v. 

 (1S70) p. 77. 



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

 n(jid and externall)- granulosa podetia, usually also granulosa or 

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

 paraphyses prolonged directly into the hypothecium ; spores Snie, 

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

 rigmata. 



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



I 



