CALICIUM. ] CALICIEL. RT 
Subgen. EUCALICIUM Cromb. Grevillea, xv.(1886) p. 14.—Thallus 
with globulose gonidia ; spores globose or ellipsoid, simple or 1-septate. 
a. Spores globose, very rarely oblong, simple, brownish ; 
sporal mass umbrine. 
2. ©. chrysocephalum Ach. 
Meth. Suppl. (1803) p. 15.—Thal- 
lus thickish, granulate, granules 
usually conglomerate, citrine or AY) & 
bright greenish-yellow. Apothe- g 
cia scattered ; stipes rather short, 
slender, black or blackish-brown ; a 
capitulum turbinato - lentiform, ; 
black, beneath and at the margin ci- | 
trino-suffused ; spores 0,003-6 mm. 
in diameter.—Cromb. Lich. Brit. p. 
11; Leight. Lich. Fl. p. 39, ed. 3, 
p. 389.—Cyphelium chrysocephalum 
Mudd, Man. p. 261. Phacotiwm 
chrysocephalum Gray, Nat. Arr. 
i. p. 484. Lichen chrysocephalus 
Turn. Linn, Soc. Trans. vii. (1804) 
p. 88, t. 8 f. 1; Eng. Bot. 
t. 2501. Calicium chrysocepha- 
lum Sm. Eng. Fl. v. p. 140.— 
Brit. Exs.: Leight. n. 1384, pro 
Fig. 24. 
parte; Mudd, n. 251. 
Readily distinguished by its bright 
yellow thallus, which in_ British 
specimens is persistent, and by the 
colour of the margin and of the under- 
side of the capitulum, but the latter 
disappears in old plants. The apo- 
Calicium quercinum Pers.—a. Goni 
dia, x 350 diameters. 
thecium, x 30. «. Section of 
apothecium (moistened), x 30. 
d. Theca and paraphyses, x 350. 
e. Spores, x 500. /. Vertical section 
of a spermogonium, xX 30. g. Ste- 
rigmata, and 4 spermatia, x 500. 
b. Apo- 
thecia are more or less scattered, rarely here and there aggregate, and as 
if subsessile. 
Hab. On old pales and barn-doors in maritime and upland tracts.— 
Distr. Local and scarce in a few localities throughout England; very 
yare in 8. and Central Scotland.—B. M.: Bury, Suffolk; Walthamstow, 
Essex; Penshurst, Kent; Bolney, Sussex; Lyndhurst, New Forest, 
Hants; Downton Castle, Herefordshire ; Hatfield, near Worcester; Hay 
Park, near Ludlow, Shropshire; Rosedale, Cleveland, Yorkshire. Falls 
of Clyde, Lanarkshire ; Aberfeldy, Perthshire. 
Form 1. melanocephalum Nyl. Syn. i. (1860) p. 147, t. v. f. 19.— 
Apothecia fasciculately branched; stipes black; capitulum black, 
citrino-suffused only at the margin; spores globose or ellipsoid, 
pale-brown, 0,004-16 mm. long, 0,004-8 mm. thick.—Leight. Lich. 
Fl. p. 40, ed. 3, p. 39; Cromb. Grevillea, xv. p. 14.—Brit. Exs. ; 
Leight. n. 134, pro parte. 
From the type, with which it grows associated, this is distinguished 
