CHENOTHECA | CALICIACE® 9 
near Stokesley, and Ingleby Park, Cleveland, Yorkshire; Hexham, 
Northumberland. 
Var. elassosporum A. L. Sm.—Thallus thinnish, glaucous or 
glaucous-greenish, or almost obsolete. Apothecia numerous, 
similar to the species ; spores minute, 2°5 » in diameter or even 
smaller, the sporal mass umbrose.—Calicium elassosporum Ny]. 
in Flora lviii. p. 441 (1875); Cromb. in Grevillea iv. p. 180 
(1876) & Monogr. i. p. 90; Leight. Lich. Fl. ed. 3, p. 41. 
Exsicc. Cromb. n. 111. 
Differs from the species in the scantier thallus and in the smaller 
spores. Nylander states also that the gonidia are smaller, a 
character difficult to be sure of in specimens with very scanty 
thallus. The apothecial stalks are sometimes branched. 
Hab. On decorticated trunks of elders in mountainous districts. 
—B. M. Glen Lochay, Perthshire (the only locality). 
Apothecia not pruinose. 
7. Ch. melanophea Zwackh in Flora xlv. p. 535 (1862).— 
Thallus thickish, granular, greenish, whitish or cream-coloured 
(K + red), sometimes nearly obsolete. Apothecia scattered, the 
stalk short and stoutish, or long (up to 2°5 mm. and more), 
slender, black, the capitulum top-shaped, black; sporal mass 
occasionally protruded ; spores spherical, 2°5—8 . in diameter.— 
Calicium melanophexum Ach. in Vet. Acad. Handl. 1816, p. 276, 
t. 8, f. 8; Cromb. Lich. Brit. p. 12 & Monogr. i. p. 89; Leight. 
Lich. Fl. p. 42; ed. 3, p. 41. Cyphelium melanopheum Mudd 
Man. p. 259 (1861). 
Exsicc. Leight. n. 315. 
The thallus somewhat resembles that of Ch. trichtalis, but has 
more rounded granules. The apothecia are irregularly scattered and 
rather rare in British specimens. 
Hab. On the trunks of old firs and decorticated oaks, rarely on 
decaying posts in wooded tracts.—Distr. Local and scarce in 8.E. 
and N. England and in Central Scotland.—B. M. Ardingly, Sussex ; 
Epping Forest, Essex; Oakley Park and Hailey Wood, near Ciren- 
cester, Gloucestershire; Shropshire; Lounsdale, Cleveland, York- 
shire; Eglestone, Durham ; New Galloway, Kircudbrightshire; Braes 
of Doune, Blairdrummond, and Aberfeldy, Perthshire. 
Var. ferruginea A. L. Sm.—Thallus crowded, granular or 
nearly powdery and often sprinked with irregular rusty spots. 
Apothecia almost sessile, the stalk immersed in the thallus, the 
capitulum rather large; spores 4—lly in diameter.—Calicium 
ferrugineum Sm. Eng. Bot. t. 2473 (1812) ; Turn. & Borr. Lich. 
Brit. p. 136; Hook. in Sm. Engl. Fl. v. p. 189. C. melanophzeum 
var. ferrugineum Scher. Enum. p. 172 (1850); Cromb. in 
Grevillea xv. p. 14 & Monogr. i. p. 89. CC. trichiale var. 
Fferrugineum Cromb. Lich. Brit. p. 12 (1870); Leight. Lich. Fl. 
p. 41; ed. 3, p. 41. Phacotrum (Phacotium) ferrugineum 8. F. 
