352 CYCLOCARPINEE: [LECANIA 
potash is given for Lecanora rhypariza as K + yellow, then blood- 
red. There was only a yellow reaction in our specimen of DL. cwr- 
vescens as tested now, but there is a deep red stain on one of the 
apothecia, which was probably obtained when the specimen was 
newly gathered. 
Hab. Encrusting mosses (Andrea & Grimmia) in an alpine 
situation.—_B. M. Summit of Ben Lawers, Perthshire; the only 
record. 
54. ICMADOPHILUS Massal. Ric. Lich. Crost. p. 26 (1852) ; 
Mudd Man. p. 64. Bzomyces Pers. pro parte. (Pl. 54.) 
Thallus crustaceous, not corticated. Algal cells Protococcus. 
Apothecia sessile or almost stalked, with a thalline margin at 
length disappearing; hypothecium colourless with gonidia partly 
below ; paraphyses slender, simple, free ; spores fusiform, 2—4- 
celled colourless. Spermogones globose, immersed, with septate 
sparingly branched sterigmata, and cylindrical pleurogenous 
spermatia, which are slightly thicker at each end. 
The genus is frequently included in Beomyces, but the structure 
and development of the apothecia are lecanorine. 
I. ericetorum A. Zahlbr. in Wiss. Mittheil. Bosn.-Herceg. iii. 
p. 605 (1895).—Thallus effuse, closely granular, greenish or 
whitish (K + yellow). Apothecia moderate in size or somewhat 
large, with a disappearing thalline margin, the disc soft, flesh- 
coloured, smooth or slightly wrinkled (K + orange); asci 
cylindrical, 6- or 8-spored; the spores fusiform, 1-—3-septate, 
13-27 » long, 4-6 p» thick; hymenial gelatine blue, the asci 
deep wine-red with iodine.—I. zruginosa Mudd Man. p. 64, t. 1, 
fig. 13 (1861). Lichen ericetorum L. Sp. Pl. p. 1141 (1753); 
Huds. Fl. Angl. p. 443 pro parte; Engl. Bot. t. 372; var. B 
Lightf. Fl. Scot. ii. p. 809? L. xruginosus Scop. FI). Carniol. i. 
p. 361 (1772). ZL. iemadophila Ehrh. Phytophyl. n. 40 (1780) 
nomen nudum ; Hoffm. Enum. i. p. 34, t. 8, fig. 1 (1784) ; With. 
Arr. ed. 3, iv. p. 15. Lecidea icmadophila Ach. Meth. p. 58 
(1803); S. F. Gray Nat. Arr. i. p. 473 ; Hook. Fl. Scot. ii. p. 39 
& in Sm. Engl. Fl. v. p. 184; Tayl.in Mackay Fl. Hib. ii. p. 129. 
Beomyces xruginosus DC. Fl. Fr. ii. p. 343 (1805); Cromb. 
Monogr. i. p. 113. B. iemadophilus Nyl. in Act. Soc. Linn. 
Bord. sér. 3, i. p. 281 (1856); Cromb. Lich. Brit. p. 16 ; Leight. 
Lich. Fl. p. 54; ed. 3, p. 52. 
Exsicc. Croall n. 587 ; Cromb. n. 118; Johns. n. 47; Larb. 
Lich. Hb. n. 44; Leight. n. 209; Mudd n. 32. 
Though the apothecium is sometimes not altogether sessile, there 
is no true podetium as in the Cladoniacew. In shady localities it is 
a beautiful green colour, but becomes yellowish in herbaria. The 
spermogones are enclosed in thalline granules. 
Hab. On moist turfy soil, on decayed Sphagna in bogs, and on 
rotten trunks of trees in upland and subalpine districts.—Dzstr. 
