148 LICHENACEr. [CLADONIA. 



Form subfurcata Nyl. ex Norrl. Not. Sitllsk. pro F. et Fl. Form. 

 Forh. n. s. x. (1873)" p. 320. Podctia elongate, subulate, sub- 

 etipate, fastigiate, branched upwards, gramilato-unequal on the 

 surface, brownish. Apothecia not seen. Cromb. Grevillea, xi. 

 p. 113. 



Tins very peculiar form is as if an hybrid between C. degenerans and 

 C. furcata, to which latter, but for the granulate podetia, it might be 

 referred as a -variety. The absence of any reaction with K keeps it 

 distinct from Cladonia stricta. In this country, as elsewhere, it is always 

 sterile. 



Hob. On moist peaty ground in subalpine tracts. Diatr. Found only 

 very sparingly among the N. Scottish Grampians. IS. M. : Upper Glen 

 Dee, Braemar, Aberdeenshire. 



Subsp. 2. C. coralloidea Nyl.Lich. Scand. (1861) p. 54. Thallus 

 small, somewhat pulvinate ; podetia short, branched above, sub- 

 flexviose, verrucose or granulate on the surface, ascyphous. Apo- 

 thecia small, crowded, brown. Cromb. Grevillea, xv. p. 45. Cla- 

 donia furcata subsp. coralloidea Cromb. Grevillea, xi. p. 118. 

 Cladonia coralloidea Mudd, Brit. Clad. p. 5. Cenomyce coralloidea 

 Acb. Lich. Univ. (1810) p. 528. Brit. Exs. : Mudd, Clad. n. 4. 



Though receding in various respects from the type, this, according to 

 the specimen from Acharius in Herb. Linn. Soc., is most probably to be 

 regarded as a subspecies of C. degenerans. It is not unlike C. furcata 

 var. palamaa (Ach.), but at once differs from this by having a distinct 

 basal thallus. The only British specimens seen agree with the plant of 

 Acharius, except that the podetia are partly subsquamulose. The apo- 

 thecia seem to be not unfrequent. 



Hob. On the ground on wet heaths in mountainous districts. Distr. 

 Very local and scarce in N. England and among the S. Grampians, Scot- 

 land. B. M. : Baysdale Moor, Cleveland, Yorkshire. Ben Lawers, 

 Perthshire. 



19. C. lepidota Nyl. Not. Sallsk. pro F. et Fl. Fenn. Forh. n. s. 

 v. (1866) p. 176. Thallus squamulose at the base ; squamules 

 somewhat large, crenato-incised, pale glaucous above, white beneath ; 

 podetia robust, pale, foliolose or squamuloso-foliolosc ; scyphi 

 usually narrow, irregular, difform or cristate-divided (K-f yellow, 

 CaCl ). Apothecia small, brown, conglomerate. Cenomyce gono- 

 reya f. lepidota Ach. Syn. (1814) p. 259. 



From C. degenerans, of which it has usually been regarded as a variety, 

 this differs in being more robust and paler, in having the podetia sqiia- 

 mulose with the squamules larger (as also at the base), and in the 

 reaction with K. The type, however, does not occur in our Islands, but 

 ouly the following form. 



Form hypophylla Cromb. Grevillea, xi. (1883) p. 113. Thallus 

 foliaceo-squamulose, subcsespitose, greyish-white or greenish-grey, 

 white beneath; podetia obsolete (K -(-yellow, CaCl ). Apotheci 

 small, sessile, dark-brown. Cladonia degenerans f. 



