146 LICHENACEI. [CLADONIA, 
18. C. degenerans Florke, Clad. (1828) p. 41.—Thallus squa- 
mulose at the base; squamules few, small, crenato-incised, glaucous- 
green above, white beneath ; podetia moderate, glabrous, often sub- 
yerrucoso-unequal, scyphiferous, whitish or pale-greenish, black and 
whitish-punctate at. the base; scyphi often radiato-pedicellate or 
proliferous at the margins (K—, CaCl—). Apothecia somewhat 
large, brown, or pale reddish-brown; spores 0,010—11 mm. long, 
0,0035 mm. thick.-—-Cromb. Lich. Brit. p. 19; Leight. Lich. MF. 
p. 64, ed. 3, p. 59.—Cladonia degenerans b. euphorea Mudd, Brit. 
Clad. p.17. Cladonia gracilis 6. degenerans Mudd, Man. p. 55, 
Capitularia degenerans Flérke in Web. et Mohr, Beitr. ii, (1810) 
p. 308. 
A very variable plant, which approaches in its varieties and forms 
several other species. In general it may readily be distinguished from all 
of these, with which it might be confounded, by having the podetia, 
which in age become blackish in their lower portion, whitish corticali- 
punctate at the base. Its most typical state, as observed by Nylander 
(Lich. Scand. p. 54), is form euphorea Ach, (Syn. p. 259), which has 
almost the habit of C. gracilis and presents the above characters. The 
only British specimen as yet seen is sterile. 
Hab. On the ground in moorlands in subalpine mountainous regiors.— 
Distr. Found only very sparingly among the N. Grampians, Scotland.— 
B. M.: Head of Glen Gairn, Braemar, Aberdeenshire. 
Form 1. haplotea Florke, Clad. (1828) p. 42.—Podetia moderate, 
usually proliferously divided above, scyphiferous, scarcely or rarely 
squamulose ; scyphi cristato-divided at the margins.—Mudd, Brit. 
Clad. p. 18; Cromb. Lich. Brit. p. 19.—Cladonia gracilis 3. dege- 
nerans a. haplotea Mudd, Man. p.55. Cenomyce gonorega a. aplotea 
Ach, Syn. (1814) p. 258. 
The podetia in this form are from ] to 2 in. high, naked, or occa- 
sionally, especially at the margins of the scyphi, sparingly squamulose. 
In the few British specimens, the apothecia, which are minute, reddish- 
brown, are only sparingly present. 
Hab. On the ground in subalpine and alpine regions.— Distr. Appa- 
rently local and scarce among the Scottish Grampians.—B. M.: Pass of 
Leny, Perthshire; Ben-naboord and Upper Glen Dee, Breemar, Aber- 
deenshire. 
Form 2. granulifera Cromb. Grevillea, xi. (1883) p. 113.— 
Podetia moderate, densely verrucoso-granulose, simple, or shortly 
branched above, obscurely scyphiferous. 
Seems to be intermediate between the type and the following variety, 
and is well characterized by the minute crowded granules with which 
the blackish podetia are clothed throughout. The apothecia in the only 
specimen seen are somewhat large and dark-brown, but are visible only 
on a single podetium. 
Hab. On the ground in alpine situations,—Distr. Met with only once 
and very sparingly among the N. Scottish Grampians.—B. M.: Cairn- 
gorm, Braemar, Aberdeenshire. 
