372 CYCLOCARPINEZ: [PERTUSARIA 
nounced in the lighter-coloured thalli. There is a doubtful specimen 
recorded from La Moye, Jersey, which is only spermogoniferous. 
Hab. On the trunks of trees from maritime to upland situations. 
—Distr. Fairly common in most parts of the British Islands.—B. M. 
La Moye, Jersey ? Withiel, Cornwall; Widdecombe, Lydford, Lust- 
leigh and Torquay, Devon; Hinton Abbey, Somerset; New Forest, 
Hants; Shanklin, I. of Wight; St. Leonard’s Forest, Lindfield, 
Danny and Handcross, Sussex; Ightham, Kent; near Highbeach, 
Epping Forest, Hockley and Hadleigh Woods and near Bocking, 
Essex; near Cirencester, Gloucestershire ; Woodbury Hill and 
Malvern, Worcestershire; Gopsall Park and Twycross, Leicester- 
shire; near Oswestry and Nesscliff, Shropshire ; Gloddaeth, Carnar- 
vonshire; Bettws-y-coed, Denbighshire; Anglesea; Newton Wood 
and Sowerdale, Cleveland, Yorkshire; Lamplugh, Cumberland ; 
Barcaldine, Argyll; Calliach and Falls of Moness, Aberfeldy, Perth- 
shire; Moor of Morrone, Braemar, Aberdeen; Glen Nevis, Inverness- 
shire; Enniskean, Cork; Kenmore, M‘Carthy’s Island, Upper Lake 
and Dinish, Killarney, Kerry ; Renvyle Wood, Connemara, Galway ; 
Westport, Mayo. 
24. P. xanthostoma Fr. Lich. Eur. p. 426 (1831).—Thallus 
effuse, thin, smooth, white, the fertile verruce scattered, sub- 
globose (K—, CaCl—). Apothecia 1 to 5 in each verruca, the 
ostiole punctiform then opening to discoid form, pale yellowish 
flesh-coloured ; spores up to 6 in the ascus, 55-75 p long, 30-40 p 
thick.—Cromb. in Journ. Bot. xiii. p. 141 (1875) ; Leight. Lich. 
Fl. ed. 3, p. 235. Porina wanthostoma Sommerf. in Vet. Acad. 
Handl. 1823 [1824], p. 115. 
The fertile verruce strongly resemble the apothecia of Lecanora 
pormiformis or early stages of L. parella, but the plant can be 
distinguished by differences in thallus, etc. 
Hab. On old stems of heather, etc., in alpine and subalpine 
localities.—Dzstr. Rare in the Grampians and Highlands of Scotland. 
—B. M. Morrone, Braemar, Aberdeenshire ; near Lairg, Sutherland- 
shire. 
Thallus sorediate. 
25. P. lutescens Lamy in Bull. Soc. Bot. Fr. xxv. p. 427 
(1878).—Thallus subeffuse, thickish, unequal, warted or areolate, 
the thallus generally covered with sorediate verruce, greenish- 
yellow (K(CaCl) + orange-yellow). Apothecia rare, the disc 
open, black, the margin tumid ; spores rarely 8 in the ascus 
(usually 4-7), about 66 » long, 36 » thick.—Cromb. in Grevillea 
xix. p. 59 (1891) & Monogr. i. p. 507. P. fallax var. variolosa 
Fries Lich. Eur. p. 425 (1831); Mudd Man. p. 276. Lichen 
lutescens Hoffm. Enum. Lich. p. 3 (1784).  Lepra lutescens 
Hoffm. Pl. Lich. p. 100, t. 23, ff. 1, 2 (1790). Lepraria 
lutescens Sm. Engl. Bot. t. 1529 (1806). Isidiwm lutescens Turn. 
& Borr, ex Hook. in Sm. Engl. Fl. v. p. 320 (1833) & Lich. Brit. 
p. 87. 
