PYRENOPSIS | PYRENOPSIDACEX 39 
Distinguished by the dark-brown colour and the thinner spreading 
thallus; considered by Nylander (1. c.) as closely allied to P. fuliginosa, 
a continental species. In this species the spermogones are more 
common than the apothecia. The spermatia are oblong-cylindrical, 
and very minute. 
Hab. On granite and schistose rocks in maritime districts.— Distr. 
Rare in the Channel Islands, N. Wales and S.W. Highlands of 
Scotland.—B. MW. La Moye and Howley Bay, Jersey ; Barmouth, 
Merioneth ; Lismore, Argyll. 
4. P. subareolata Nyl. Lich. Scand. p. 27 (1861) nomen; 
Cromb. Monogr. i. p. 24 (1894).—Thallus effuse, cracked-areolate, 
the areole plane, blackish. Apothecia small, innate, blackish ; 
spores 8 in the ascus, 15 uw long, 8 pw thick ; hymenial gelatine 
bluish then wine-reddish with iodine.-—Cromb. in Journ. Bot. xx. 
p. 271 (1882). 
Comparable with P. concordaluta, a Finland species, but with 
smaller spores (Nyl. in Flora lviii. p. 440 (1875) ). The thallus, which 
spreads over fairly large patches of the rock, is very dark in colour 
and rather thin. Crombie has suggested (Monogr. i. p. 24) that 
Verrucaria imbrida Tayl. (Lond. Journ. Bot. vi. p. 153 (1847) ) may 
be a synonym. 
Hab. On moist rocks in mountainous districts.— Distr. Local and 
searce in N. Wales and S.W. Ireland.—2. MW. Near Barmouth, 
Merioneth ; near Killarney, Kerry. 
5. P. phylliscella Ny]. in Flora Iviii. p. 102 (1875).—Thallus 
effuse, composed of small flattened adpressed squamules roundish 
and congregate but not contiguous, dark-brown. Apothecia 
immersed, minute, 5-15 in each squamule, the thalline margin 
thin, almost covering the epithecium ; paraphyses few ; spores 8 
in the ascus, oblong-ellipsoid, 5-7 w long, 3 yw thick ; hymenial 
gelatine bluish, the asci dark-violet, with iodine.—Cromb. in 
Grevillea iii. p. 190 (1875) ; Leight. Lich. Fl. ed. 3, p. 14. 
Considered by Nylander to be closely allied to P. tasmanica. The 
squamuline character of the thallus is not very pronounced, the 
squamules themselves are minutely granular; the apothecia, when 
present, are numerous and crowded. The spermogones are not 
uncommon, the spermatia narrowly oblong or oblong-fusiform. 
Hab. On quartzose boulders in a stream.—. M. Ben-y-Gloe> 
Blair Athole, Perthshire. 
6. P. furfurea Nyl. ex Cromb. in Journ. Bot. xii. p. 332 
(1874).—Thallus effuse, thinnish, granular-areolate, brownish- 
black, reddish-black when moist. Apothecia minute with tumid 
connivent margins ; spores 10-12 ,» long, 7-8 yp thick ; hymenial 
gelatine wine-red with iodine.—Leight. Lich. Fl. ed. 3, p. 14. 
Oollema furfureum Nyl. in Flora xlviii. p. 353 (1865) ; Carroll in 
Journ. Bot. iii. p. 286 (1865) ; Cromb. Lich, Brit. p. 3; Leight. 
feo. El py 17. 
