UMBILICARTA. ] @YROPHOREI. 323 
1. U. pustulata Hoffm. Deutsch. FI. ii. (1795) p. 111.—Thallus 
large, monophyllous, inciso-lobed at the circumference, papulose, 
pale-greyish or greyish-brown, subpruinose, sprinkled with large 
fuliginoso-floccose glomeruli; beneath deeply lacunoso-foveolate, 
naked, brownish or greyish-pruinose, very minutely rimuloso-areo- 
late (K—, CaCl) eddish)* Apothecia moderate, superficial, scattered, 
somewhat plane ; spores large, solitary, 0,028-70 mm. long, 0,018- 
34 mm. thick——Sm, Eng. FL. v. p. 219; Mudd, Man. p. 115, t. ii, 
f. 35; Leight. Ann. Mag. Nat. Hist. ser. 2, xviii. p. 294; Cromb. 
Journ, Linn. Soc. Bot. xvii. p. 576.—Gyrophora pustulata Gray, 
Nat. Arr. i. p. 478 ; Hook. FL. Scot. ii. p. 42; Turn. & Borr. Lich. 
Br. p. 232; Tayl. in Mack. Fl. Hib. ii. p. 155; Cromb. Lich. Brit. 
p. 40; Leight. Lich. Fl. p. 154, ed. 3, p. 143. Lichen pustulatus 
Linn. Sp. Pl. (1753) p. 1150; Huds. Fl. Angl. p. 454; Lightf. Fl. 
Scot. ii. p. 858; With. Arr. ed. 3, iv. p. 64; Eng. Bot. t. 1285. 
Lichenoides pustulosum cinereum et veluti ambustum Dill. Muse. 226, 
t. 30. f. 181.—Brit. Evs.: Leight. n. 166; Larb. Cesar. n. 25; 
Cromb. n. 52; Bohl. n. 125. 
The peculiar pustular and isidio-glomerulose upper, and the deeply 
yiued under surface of the thallus at once distinguish this from the other 
ritish species of the tribe. The thallus, which is greenish when moist, 
is normally orbicular, becoming at length irregular in shape, and often 
attains a very large size. The apothecia, which are rare in Britain, are 
scattered among the glomeruli chiefly towards the circumference, and 
are at first concave, then plane or convex, with the margin at length 
excluded. 
Hab. On rocks and houlders, rarely on old walls, in mountainous dis- 
tricts.— Distr. Somewhat local, though plentiful where it occurs in the 
Channel Islands, 8. and W. England, 8. Scotland, the W. Highlands 
and Shetland, Scotland, and in 8.W. Ireland.—B. M.. La Moye, Island 
of Jersey ; Island of Guernsey. Blackstone Rock, near Bovey Tracey, 
Hay Tor and Hunter Tor, Dartmoor, Devonshire; Helminton, Cornwall ; 
Malvern Hills, Worcestershire ; Charnwood Forest, Leicestershire; Caer 
Caradoc, Shropshire; Cwm Bychan, Merionethshire; Capel Curig and 
Nant Gwynant, Carnarvonshire; Nepha, Westmoreland; Wastdale, 
Cumberland. New Galloway, Kirkcudbrightshire; Loch Sligachan and 
Loch Corruisk, Isle of Skye; Ben Nevis, Inverness-shire ; Sandy Loch, 
near Lerwick, Shetland. Mizen Head and Glengariff, co. Cork; near 
Dunkerron, co. Kerry. 
Subgen. 2. AGYROPHORA Nyl. Flora, 1878, p. 247.—Thallus 
epapulose above, efoveolate beneath, internally with the chondro- 
hyphe continuous in the cortical layer of the lower surface. Apo- 
thecia with the spores 8nee, simple, colourless. 
2. U. atropruinosa Scher. Ser. Mus. Helv. vi. (1829) p. 109, 
t. 12-14.—Thallus moderate, monophyllous or subpolyphyllous, 
rigid, thinly areolato-rimulose or rugoso-areolate, brownish-black, 
greyish-pruinose in the centre; beneath smoothish or very finely 
granulato-areolate, black or partly paler, often pruinose (medulla 
K—, CaCl—). Apothecia somewhat prominent, eee CROs 
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