156 LICHENACEI. [CJLADONIA. 



minute glaucous squamules, slightly pervious at the axils and lacero- 

 rauiate, the apices subulato-furcate. Cromb. Grevillea, xv. p. 45, 

 xi. p. 113 (ut aubsp.). Cladonia glauea Florke, Clad. (1828) 

 p. 140. 



Differs perhaps as a subspecies in the colour of the podetia and the 

 form of their apices. In our only two British specimens the podetia are 

 almost entirely furfuraceous, with a few scattered squamules towards 

 the base. The apothecia, which are small, dark-brown, are very rarely 

 present. 



Hal). Among mosses on putrid stumps in mountainous districts. 

 Distr. Extremely local and scarce in N. Wales and the S.W. Highlands 

 of Scotland. 13. M. : Rhewgreidden, Merionethshire. Glen Creran, 

 Argyleshire. 



25. C. scabriuscula Nyl. Flora, 1876, p. 447. Thallus squa- 

 mulose at the base, the squamules small, often evanescent ; podetia 

 caespitose, slender, erect or curved, scabrid, more or less minutely 

 squamulose, divaricately branched, greyish-white, tbe brandies 

 subalternate, recurved and furcate at the apices (K + yellowish, 

 CaCl ). Apothecia moderate, terminal, brown. Cromb. Journ. 

 Bot. 1876, p. 360; Leight. Lich. PI. ed. 3, p. 6l. Cenomyce 

 scabriuscula Del. in Dub. Bot. Gall. ii. (1830) p. 623. 



This approaches on the one hand subsp. C. raccmosa f. recurva (tcnmor) 

 and on the other subsp. C*. adspersa of the following species. From 

 both, however, it is separated by the podetia and the reaction with K, 

 so that it may with propriety be regarded as holding an intermediate 

 specific place. In our British specimens' there are only a few young 

 apothecia. 



flab. On mossy rocks and old walls in maritime and upland districts. 

 Distr. Found only in the Channel Islands, S.W. England, S. Scotland, 

 and the W. Highlands. B. M. : Noirmont, Island of Jersey. Near 

 Beckey Falls, Devonshire; near Penzance, Cornwall. New Galloway, 

 Kirkcudbrightshire; Barcaldine, Argyleshire; Loch Linnhe, Lochabe'r, 

 Inverness-shire. 



26. C. squamosa HofFm. Deutsch. Fl. (1795) p. 125. Thallus 

 foliaceo-squamulose at the base ; squamules crenate or iuciso- 

 crcnate, greyish-white or pale above, white beneath ; podetia cylin- 

 drical, branched, more or less covered with minute leaflets or furfu- 

 raceous squamules, the axils pervious, dentate and proliferous at 

 Ihe apertures; apices somewhat furcate or, when fertile, radiato- 

 cristate, subcorymbose (K , CaCl ). Apothecia small, pale or 

 reddish-brown ; spores 0,010-13 mm. long, 0,0035 mm. thick. 

 Mudd, Man. p. 56, Brit. Clad. p. 19 ; Cromb. Lich. Brit. p. 20 ; 

 Leight. Lich. Fl. p. 66, ed. 3, p. 61. ScypTiopTiorus sparassus Sm. 

 Eng. Fl. v. p. 237. Cenomyce sparassa Hook. Fl. Scot. ii. p. 64 ; 

 Tayl. in Mack. Fl. Hib. ii. p. 80. Scliasmaria sparassa Gray, Nat. 

 Arr. i. p. 416. Lichen sjiarassus Eng. Bot. t. 2362. Brit. Exs. : 

 Mudd, n. 13 ; Cromb. n. 124 ; Larb. Cassar. n. 10 pro parte. 



