78 — 
roideis, thaliino-marginatis. Thecæ monosporæ; sporæ 
lung. 0,140-180, crass. 0,050-100 millim. Gel. hym. I 
intensive cœrulescens. Saxicola in Transsylvania. 
830. P. Wulfeoii OC. Nyl. Pyr. or., p. 36 et Scancl., p. 181.— 
Thallus K (CaCl) supra flavo-aurantiacus. Sporæ 8 næ long. 
0,058-85, crass. 0,028-38 inillim. Spermatia recta long. 
0,013-23, crass. 0,0005 millim. Fagicola. 
Yar. glabrescens Nyl. Pyr. or. p. 37. — Thallus 
flavido -cinerascens vel cinereo-virescens, tenuis, 
sublævis vel rugulosus; apolheciaepithecionigricante 
subrimoso. Corticola. 
Yar. rugosa (Ach.) Nyl l. c. — Quercicola. 
Yar. impicola (Schær ) Nyl. I. c. — Largiter saxa 
vestiens. 
831. P. melaleuca Dub. Nyl. Prodr. G ail. p. 99. — Eadem 
reactione thalli gaudens, sed thecis bisporis; sporæ long. 
0,072-75, crass. 0,023-25. 
Corticola in Gallia. 
832. P. Sommerfeltii (Flk.) Nyl. Scand. p. 181. — Thallus 
lacteo-albus K — ; apothecia 1-4 in quavis verruca thal- 
lina; epithecium nigrum; sporæ 8 n ® long. 0,027-37, crass. 
0,015-18 millim. 
833. *P. melastoma Nyl. 1864, p. 489; 1869, p. 298. — Sola 
varietas prioris. Thallus albus; apothecia in tuberculis sat 
parvis, sæpe conüuentibus, supra nigricantia; sporæ 8 nœ , 
in thecis cylindricis, long. 0,030-50, crass. 0,020-27 mil. 
Corticola in Norvegia. 
834. P. nolens Nyl. 1864, p. 489.— Thallus cinereus; apothecia 
innata, ostiolis nigris. Sporæ 8 næ , long. 0,030-42, crass. 
0,15-22 millim. Thecæ cylindraceæ, I intense cœrule- 
scentes. Facie est Lecanorœ cinereee. Saxicola in Hibernia. 
835. P. leioplaca Schær. Nyl. Pyr. or., p. 37, et Scand. 
p. 181. — Thallus lacteus K — ; apothecia ostiolis 1-3 
minutis fere incoloribus. Rarius facie fere P. commuais, 
vulgo autem thallo læviore et verrucis apotheciorum 
minus convexis. Distat etiam ab hac sporis, 4 Qis long. 
0,42-75, crass. 0,020-38 millim. Corticola. 
