C0LLKM0P8IS.] COLLEMEr. 79 



and less developed conditions of Lecanora cervina. In this country it 

 sometimes occurs associated with the preceding species, from which it is 

 di>tinguished by the thallus and the apothecia ; though neither of these 

 are well developed in the British specimens. 



Hab. On calcareons rocks in maritime and upland tracts of mountainous 

 rei-ions. — Dv<tr. ^'ery local and rare in S.AV. Ireland (near Kenmare, co. 

 Kerry) and the Central Highlands of Scotland. — B. M. : Craig Tulloch, 

 Blair Alhole, Perthshire. 



3. C. furfurella Nyl. e.v Cromb. Journ. Bot. 1874, p. 332.— 

 Thallus effuse, very thinly furfuraceo-granulose, or scattered in 

 small furfuraceous verrucre, browuish-black or blackish, with some- 

 what larger, convex granules intermixed. Apothecia minute, sub- 

 pvrenodeo-lecanorine, impressed in the larger granules, concolorous ; 

 spores shortly ellipsoid, 0,011-17 mm. long, 0,008-11 mm. thick; 

 paraphyses discrete ; hymenial gelatine wine-red with iodine. — 

 Xyl. Flora, 18S1, p. 453 : Leight. Lich. Fl. ed. 3, p. 35. — Collema 

 furfureUum Xyl. StiUsk. pro F. et Fl. Fenn. Not. iv. (1859) p. 229 ; 

 Lich. Scand. p. 2S ; Carroll, .Journ. Bot. 1865, p. 286 ; Cromb. Lich. 

 Brit. p. 3 ; Leight. Lich. Fl. p. 17. 



The anatomical structure of the thallus shows this plant, at one time 

 regarded by Xylander as a distinct section of Collema, to be a Culleinopsis. 

 The thallus and fructihcation distinguish it from the allied species. The 

 apothecia are numerous, though the spores are rarely found fuUy deve- 

 loped. The spermogones are only sparingly visible, the spermatia being 

 thin, oblongo-cylindrical. 



Hab. On moist schistose rocks in alpine places.— Z>/i*/;-. Found very 

 spaiinjrly amongst the S. Grampians, Scotland. — B. M. : Above Loch-na 

 Gat, Ben Lawers, Perthshire. 



4. C. Amoldiana Xyl. Flora, 1874, p. 305. — Thallus effuse, thin, 

 maculate, granulose, olive-brown or dark-brown. Apothecia small, 

 biatorine, somewhat prominent, impressed in the centre, reddish or 

 dark-red, the margin paler; spores ellipsoid, oleoso-locular, 0,017- 

 20 mm. long, 0,010-0,0105 mm. thick; paraphyses articulate; 

 hvmenial gelatine slightly bluish, then pale "wine-red with iodine. — 

 CVomb. Journ. Bot. 1876, p. 359 ; Leight. Lich. Fl. ed. 3, p. 36. — 

 Fhysma Atiioldiana Hepp, Flora, 1858, p. 94. 



This somewhat resembles X<=/j^o(7(«Hi hiatorinum, but is smaller, thinner, 

 and with different spores. The thallus is minutely cellular, lax, and 

 indistinct in texture. The apothecia, which are nearly gyalectiform, are 

 either somewhat scattered or approximate. Verrucaria Flotoriana Hepp, 

 Flecht. n.02 pro parte, Collemopsis Flotoviana 'Syl. e.c Cromb. Journ. Bol. 

 1S74, p. 147, scarcely differs from this species. 



Hab. On calcareous stones in shady upland situations. — Distr. Appa- 

 rently local and rare in S. and W. England. — B. M. : Near Shiere, 

 Surrey ; near Cirencester and Chalford, Gloucestershire. 



5. C. ohlongans Nyl. Flora, 1874, p. 305. — Thallus subeffuse, 

 thin, granuloso-crustaceous, confluent, brownish-olive. Apothecia 



