560 CYCLOCARPINEE | PERTUSARIA 
7. P/ globulifera Nyl. in Mém. Soc. Sci. Nat. Cherb. v. 
p. 116 (1857).—Thallus suborbicular, thickish, somewhat mem- 
branaceous and cartilaginous and with a zonate margin, generally 
wrinkled and plicate, sometimes granular-isidioid, crowded with 
large discoid soralia, greenish-grey (K—, CaCl—). Apothecia 
enclosed in large corticate verruce, depressed, globular and 
closed, then lacerate-dehiscent and white sorediate ; spores one 
in the ascus (rarely two), 207-276 p long, 50-80 p thick.— 
Mudd Man. p. 273 (excl. vars.); Cromb. Lich. Brit. p. 59 
(errore globifera) (excl. vars.) and Monogr. i. p. 495; Leight. 
Lich. Fl. p. 243; ed. 3, p. 233. Lichenoides candidum et farina- 
ceum, scutellis fere planis Dill. Hist. Muse. p. 131, t. 18, fig. 11 B, ¢ 
(1741). Lichen discoideus Sm. Engl. Bot. t. 1714 (1807) (non 
Pers.) & L. globuliferus t. 2008 (1809). Variolaria globulifera 
Turn. in Trans. Linn. Soe. ix. p. 139, t. 10, fig. 2 (1808) ; 8S. F. 
Gray Nat. Arr. i. p. 490 ; Grev. Fl. Edin. p. 330 ; Hook. in Sm. 
Engl. Fl. v. p. 169; Turn. & Borr. Lich. Brit. p. 59. V. dis- 
coidea Hook. in Sm. Engl. Fl. v. p. 269 (1833) (? Ach.) ; Tayl. in 
Mackay Fl. Hib. ii. p. 112? Turn. & Borr. Lich. Brit. p. 61. 
V. faginea Tay}. 1. c.? (non Linn.). 
Exsice. Bohl. n. 96 ; Johns. n. 327 ; Mudd n. 263 pro parte. 
Though normally determinate, the thallus may spread indefinitely. 
Fertile verruce are rare, generally they take the form of densely 
powdery-white soralia (f. discotdea Cromb. in Grevillea xix. p. 59 
(1891) & Monogr. i. p. 496). The spores examined are generally up to 
220 » long, and frequently shorter than 207 ». The citations from 
Taylor are doubtful. His V. faginea is not bitter to the taste, while 
V. discoidea, according to him, is so. 
Hab. On trunks of old trees in wooded districts.—Distr. General 
and common throughout the British Isles—B. M. Boconnoe and 
near Withiel, Cornwall ; Chudleigh, Beckey Falls and Bovey Tracey, 
Devon; New Forest, Hants; St. Leonard’s Forest, Danny, Ardingly, 
Crawley and Beeding Priory, Sussex; Penshurst, Kent; Shiere, 
Surrey ; Ulting and Epping Forest, Essex; Cirencester, Gloucester- 
shire; Broadwas and Malvern, Worcestershire; Yarmouth, Suffolk ; 
Madingley, Cambridgeshire; Lambeth, S. Wales; Barimouth, 
Merioneth; Anglesea; Craig-y-Rhiw and Haughmond Hill, Shrop- 
shire; Charnwood Forest and Gopsall, Leicestershire; near Ayton, 
Cleveland, Yorkshire ; Egglestone, Durham ; Helensburgh, Dumbar- 
tonshire ; Inverary and by Loch Creran, Argyll; Craigforth, Stirling ; 
Glen Lochay, Killin and Blaeberry Hill near Perth, Perthshire ; Den 
of Mains, Forfarshire ; Murtle, near Aberdeen ; Loch Linnhe, Inver- 
nessshire ; Castlemartyr and Macroom Demesne, Cork; Ashley Park, 
near Galway; Louisburgh, Mayo. 
8. P. faginea Leight. Lich. FI. p. 242 (1871); Wain. 
in Medd. Soc. Faun. & Fl. Fenn. xiv. 14, p. 24 (1888).— 
Thallus determinate, thickish or rather thin, wrinkled, granulate 
and cracked, subzonate at the circumference, grey, thickly 
covered with white soralia, bitter to the taste (K—, CaCl—). 
Fertile verruce rather rare (K + yellowish, K(CaCl) + rose- 
