CLADONIA.] CLADONIEI. 139 



pyxidata e. cornuta c. tortuosa Mudd, Brit. Clad. p. 12. Cenomyce 

 tortuosa Del. in Dub. Bot. Gall. ii. (1830) p. 622. 



The contorted podetia and the often incrassate apices of their branches 

 distinguish this form. The podetia are frequently also more or less 

 squamulose and furfuraceous in the lower portion. In our specimens a 

 few young apothecia only are present. 



Hob. On the ground among mosses in upland districts. Distr. Seen 

 only from Central England and N.E. Scotland. B. M. : Charnwood 

 Forest, Leicestershire. Countesswells, near Aberdeen. 



Var. 7 . radiata Nyl. ex Cromb. Grevillea, xi. (1883) p. 112. 

 Podetia elongate, subulate or scyphiferous ; scyphi narrow, radiate 

 or radiato-firubriate at the margins. Cladonia Jimbriata var. radiata 

 Cromb. Lich. Brit. p. 19. C. pyxidata var. Jimbriata f. radiata 

 Mudd, Man. p. 53, Brit. Clad. p. 13. Scyphopliora fimbriata ft. 

 radiata Gray, Nat. Arr. i. p. 420. Cenomyce radiata Tayl. in Mack. 

 Fl. Hib. ii. p. 81. Lichen radiatus Schreb. Spic. PI. Lips. (1771) 

 p. 122 ; With. Arr. ed. 3, iv. p. 38 ; Eng. Bot. t. 1835. Cladonia 

 pyxidata var . Jimbriata f. cornuto-radiata Schacr., Leight. Lich. Fl. 

 p. 62, ed. 3, p. 58. Lichen pyxidatus p Huds. Fl. Angl. ed. 2, 

 p. 555. Coralloides scypldforme cornutum Dill. Muse. 92, t. 15. 

 f. 16 c, F, G.Brit. Exs. : Mudd, Clad. n. 23 ; Leight. n. 376 ; Bohl. 

 n. 47. 



This is distinguished by the radiate margins of the scyphi ; but the 

 ascyphous podetia are very similar to those of the preceding variety, 

 with which it seems to be confluent. In luxuriant specimens the scyphi 

 are expanded, with the subulate fimbriae more elongate. The apothecia 

 are not present in our specimens, but the spermogones are frequent. 



Hab. On the ground in upland districts. Distr. Probably general in 

 hilly tracts of Great Britain and Ireland, though as yet seen only 

 from comparatively few localities. B. M.: Near Norwich, Norfolk; 

 St. Breock, Cornwall; Malvern, Worcestershire; Barmouth and Aber- 

 dovey, Merionethshire; Westerdale, Cleveland, Yorkshire. Tongland, 

 Kirkcudbrightshire ; Glen Lochay, Killin, Perthshire ; Kinnordy Moss, 

 Forfarshire ; Durris, Kincardineshire ; Countesswells, near Aberdeen. 

 Aghalee bog, N.W. of Lough Neagh, co. Londonderry ; Killarney, co. 

 Kerry. 



11. C. gracilis Hoffm. Deutscb. PI. ii. (1795) p. 119. Thallus 

 sparingly squamuloso-foliolose at the base ; squamules olive-green 

 or brownish above, whitish beneath, often evanescent; podetia 

 elongate, slender, corticate, glabrous, simple or branched, subulate 

 or scyphiferous at the apices ; scyphi narrow, denticulate at the 

 margins, pale-greyish or pale-greenish, occasionally subspadiceous 

 (K , CaCl ). Apothecia either pedicellate or sessile, moderate, 

 brown or reddish; spores oblong, 0,009-0,012 mm. long, 0,0035- 

 0,004 mm. thick. Cromb. Grevillea, xi. p. 112 ; Leight. Lich. Fl. 

 p. 62, ed. 3, p. 58. Cladonia gracilis d. chordalis Mudd, Brit. Clad. 

 p. 17; Cromb. Lich. Brit. p. 19. C. gracilis yjiybrida c.chordalis 

 Mudd, Mann. p. 55. Scyphopliorus gracilis Sm. Eng. Fl. v. p. 239. 



