CHENOTHECA | CALICIACE® i 
Engl. Fl. v. p.140. ©. aciculare Fr. Summ. Veg. p. 119 (1846) ; 
Leight. Lich. Fl. p. 40; ed. 3, p. 40; Cromb. Monogr. i. p. 88. 
C. pheeocephalum var. aciculare Cromb, Lich. Brit. p. 12 (1870). 
Cyphelium chlorellum Koerb. Syst. Lich. Germ. p. 317 (1855) ; 
Mudd Man. p. 262. 
Exsicc. Leight. n. 170; Mudd n. 252; Larb. Lich. Hib. 
fie l-bohl, n. 98 
Allied to the preceding, but differing in the thin powdery thallus, 
the longer and narrower head, and the frequent protrusion of the 
sporal mass by which the citrine pruina is pushed to the margin. 
Hab. On trunks of old trees.—Distr. Very local and scarce in 
S.E. and N.W. England, not recorded for Scotland or Ireland.— 
B. M. New Forest, Hants; Danny and Bolney, Sussex; Boxley, 
Kent; Wheatfield Park, Oxfordshire; Kempsey, Worcestershire ; 
Bury, Suffolk; Brantsdale and Bousdale Gill, Yorkshire; Levens 
Park, Westmoreland. 
Apothecia whitish- or greyish-pruinose. 
4. Ch. trichialis Th. Fr. Lich. Arct. p. 251 (1860).—Thallus 
thinnish, granular-squamulose, greyish-yellow or greyish-glaucous- 
green. Apothecia small, scattered or crowded, with a slender 
black stalk, the capitulum globose-lenticular, black, greyish- 
pruinose, at length naked ; spores small, 2°5—4°5 » in diameter.— 
Calicium trichiale Ach. Lich. Univ. p. 243 (1810) ; Cromb. Lich. 
Brit. p. 12 & Monogr. i. p. 85; Leight. Lich. Fl. p. 41; ed. 3, 
40. CO. xruginosum var. cerulescens 'Turn. & Borr. Lich. Brit. 
p. 156 (1839); Hook. in Sm. Engl. Fl. p. 141. Cyphelium 
trichiale De Not. in Giorn. Bot, Ital. ii. p. 318 (1846); Mudd 
Man. p. 259. 
Crombie placed this species in the subgenus Allodiwm Nyl. 
(Flora lxiii. p. 392), on account of the cylindrical shortly septate alga 
(Stichococcus), a growth form only, which forms the gonidia. The 
scale-like granules are scattered and minute, or crowded, and then 
somewhat larger. 
Hab. On the trunk of old trees and on old palings (fir) in shady 
regions.—Distr. Rare in 8. and N. England, 8. Scotland and 
S.W. Ireland.—B. M. Menstrie, New Forest, Hants; Church 
Stretton, Shropshire; Ingleby Park, Cleveland, Yorkshire; Binnie 
Woods, Haddingtonshire ; Tervoe, Limerick. 
Subsp. cinerea A. L. Sm.—Thallus finely granular, greyish 
or whitish. Apothecia with the stalk often brownish and partly 
greyish-pruinose, the capitulum greyish or whitish pruinose 
beneath ; spores 3-5 » in diameter.—Calicium cinereum Pers. 
Icones, p. 58, t. 14, ff. 4 & 5 (1798-1800). C. trichiale var. 
cinereum Carroll in Journ. Bot. iv. p. 22 (1866); Leight. Lich. 
Fl. p. 41 ; ed. 3, p. 40; subsp. cinereum Nyl. ex Norrl. in Medd. 
Siillsk. Faun. & Fl. Fenn. i. p. 10 (1876); Cromb. Monogr. i. 
p. 86. 
