350 LICHENAOEI. [LECANORA. 
—Psoroma hypnorum Hoftm. Deutsch. FI. ii. (1795) p. 166 ; Cromb. 
Lich. Brit. p. 44; Leight. Lich. Fl. p. 163, ed. 3, p. 149; Gray, Nat. 
Arr. i. p. 445. Pannaria hypnorum Mudd, Man. p. 124. Squa- 
maria hypnorum Sm. Eng. Fl. v. p. 194. Lichen hypnorum Dicks. 
Crypt. fase. iii. p. 14; With. Arr. iv. p. 22; Eng. Bot. t. 740.— 
Brit. Evs.: Larb, Cesar. n.70; Cromb.n. 58 pro parte. 
Internally somewhat resembling more developed states of Pannaria 
brunnea, with which it is confounded in some of our older herbaria, but 
is definitely separated by the texture of the thallus. The plant is more 
or less effuse, with the squamules either somewhat discrete, or imbri- 
cately crowded, or sometimes little developed—according to the habitat. 
The hypothallus is very rarely visible, and only in corticolous speci- 
mens, where it is thin, greyish or greyish-brown (vide Nyl. Pyr. Or. 
p. 125). The apothecia are generally numerous, becoming larger in old 
plants. 
Hab. Among mosses on the ground, rocks, and walls in maritime and 
upland districts —Distr. Rather local in England, N. Wales, and the 
Channel Islands, more frequent in Scotland ; not recorded from Ireland. 
—B.M.: Grosnez, Island of Jersey; Island of Guernsey. Yarmouth, 
Suffolk; Respring, Cornwall; Tresco, Scilly Islands; Hale’s End, near 
Malvern, Worcestershire ; Aberdovey, Merionethshire ; Eglestone, Dur- 
ham ; The Cheviots, Northumberland. Pentland Hills, near Edinburgh ; 
Hills above Greenock, Renfrewshire; Barcaldine, Argyleshire; Killin, 
Craig Calliach, Ben Lawers, and Glen Fender, Perthshire ; Clova and near 
unde Forfarshire ; Craig Cluny, Braemar, Aberdeenshire ; Glen Nevis, 
Inverness-shire. 
Form deaurata Nyl. Not. Sillsk. pro F. et Fl. F. Forh. v. (1866) 
p. 125.—Thallus bright-yellow or tawny-yellow. Apothecia rather 
large, with concolorous thalline margin.—Cromb. Grevillea, xviii. 
p. 44.—Psoroma hypnorum form deaurata Nyl. Lich. Scand. p. 121 ; 
Cromb. Lich. Brit. p. 44. Lecanora lepidora 3. deaurata Ach. Lich. 
Univ. (1810) p.418.— Brit. Hvs.: Cromb. n. 58 pro parte, 
Differs merely in the more yellowish thallus and the normally larger 
apothecia. When the thallus is less developed it is more luxuriant at the 
margins of the apothecia. 
Hab. Among mosses on boulders and walls in maritime and upland 
districts.— Distr. Seen only from N. Wales and the Highlands of Scot- 
land.—B. M.: Cwm Bychan, Merionethshire. Appin, Argyleshire ; Glen 
Lochay, Killin, Perthshire ; Corriemulzie, Braemar, Aberdeenshire. 
Subgenus 2. SQUAMARIA Nyl. Not. Sallsk. pro F. et Fl. F. 
Forh. v. (1866) p. 125.—Thallus radiately laciniate or cartila- 
gineo-squamose. Apothecia lecanorine ; spores 8nw, ellipsoid, 
simple, colourless; hymenial gelatine bluish with iodine. Sper- 
mogones with simple sterigmata and long, arcuate, spermatia,— 
Squamaria DC. FI, Fr. ii. (1805) p. 374; Nyl. Mém. Soc. Cherb. iii. 
p. 177. 
