CLADONIA.] CLADON1EI. 143 



Cromb. Grevillea, xi. p. 112. Cladonia pyxidata I. ocJirochlora 

 a. ceratodes Mudd, Brit. Clad. p. 14. Brit. Exs. : Mudd, Clad. n. 23. 



This differs chiefly in the form of the apices of the podetia, and appa- 

 rently never occurs with apothecia. 



Hob. On putrid trunks and turf-walls in shady upland districts. Dtstr. 

 Apparently local and scarce in S.W. and N. England and among the 

 Central Scottish Grampians. B. M. : Beckey Falls, S, Devon ; near Bod- 

 min, Cornwall ; Loundsdale, Cleveland, Yorkshire : Enuerdale, Cumber- 

 laud. Rannoch, Perthshire ; Loch Linnhe, Inverness-shire. 



14. C. verticillata Fldrke, Clad. (1828) p. 26. Thallus foliaceo- 

 squamulose at the base ; leaflets few, small, laciniiform, crenato- 

 incised, dark-olive or greyish-green ; podetia corticate, glabrous, 

 elongato-turbinato, scyphiferous, glaucous- or brownish-green ; 

 scyphi regular, plane, denticulate at the margin, at length repeatedly 

 proliferous (2-4 times) from the somewhat elevated centre (K , 

 CaCl ). Apothecia moderate, brown or reddish. Leight. Lich. Fl. 

 p. 63, ed. 3, p. 59. Cladonia gracilis subsp. verticillata Cromb. Lich. 

 Brit. p. 19. Cladonia cervicornis ft. verticillata Mudd, Brit. Clad, 

 p. 5. C. gracilis (3. verticillata Mudd, Man. p. 54. Scyphophora 

 verticillata Gray, Nat. Arr. i. p. 418. Cladonia pyxidata var. verti- 

 cillata Hoffm. Deutsch. Fl. (1795) p. 122. Lichen pyxidatus /3. 

 pro parte, Huds. Fl. Angl. p. 552 ; With. Arr. ed. 3, iv. p. 36. 

 Lichenoides tubulosum pyxidatum prolifenim Dill. Muse. 80. t. 14. 

 f. 6 D-H ; in Itay, Syn. ed. 3, 69. 2V. Brit. Exs. : Mudd, Clad, 

 n. 3. 



From C. gracilis, of which some make it a variety or subspecies, this is 

 distinguished by the scyphi being at length 2-4 times proliferous from 

 the centre, the uppermost scyphus being shorter and narrower. It 

 approaches also C. verticillaris Mont., but is well separated by the basal 

 thallus. In this country it is rarely fertile. 



Hab. On mossy rocks and boulders in maritime and upland districts. 

 Di#fr. Local and scarce in S., W., and N. England, very rare in Scotland 

 and in N.W. Ireland (Connemara, Gal way), as also in the Channel Islands ; 

 though it is no doubt more generally distributed. B. M. : Noirmont, Island 

 of Jersey. Broadwater Forest, Sussex ; St. Breock, Cornwall ; Delamere 

 Forest, Cheshire ; Ayton Moor and Baysdale, Cleveland, Yorkshire ; 

 Swinhope Fell, Northumberland. Glen Lochay, Killin, Perthshire ; 

 Moor of Morrone, Braemar, Aberdeenshire. 



Form laciniolata Nyl. ex Cromb. Grevillea, xi. (1883) p. 112. 

 Lacinise elongate and narrow at the base ; podetia with the scyphi 

 laciniolose at the margins. 



This may be a distinct variety. It is a luxuriant plant, with the apo- 

 thecia numerous and dark brown. 



Sab. On exposed rocks in moist places in upland districts. Distr. 

 Found only sparingly in S.W. England and the S.W. Highlands, Scot- 

 land. B. M. : Carn Galva, near Penzance, Cornwall. Barcaldine, 

 Argyleshire. 



