au 
rotundatis, mediocris, nitidiusculus; 'subtus nervis nigris vel 
fusco-nigris reticulatus (ambitu autem pallidis); apothecia 
fusca vel fusco-nigra rotundata vel elliptica transversa plana 
horizontalia. 
Supra terram et ad saxa inter muscos passim sat frequenter. 
Thallus diversus a thallo polydactyle; apothecia vero omnino alia, 
spore breviores et determinate 3-septate. 
7. P. venosa Hffm., Nyl. Syn. p. 328. 
Thallus pallidus vel pallido-cinereus vel glauco-cinerascens 
parvus (latit. circa semipollicaris, raro usque fere 1-pollicaris) 
simplex subadscendens vel-suberectus ovatus vel fere flabelli- 
formi-lobatus nitidiusculus levis, subtus albus nervis nigris vel 
fusco nigris validis ramosis (versusque'basin truncis primariis 
vel in unum collectis); apothecia fusco-nigra rotundata plana 
horizontalia (latit. circa 4 millim.). 
Supra terram et in fissuris ad latera rupium passim; in 
Lapponia frequentior. 
Sustris. III. — SOLORINETLI. 
Thallus membranaceus opacus, strato gonidiali granula goni- 
ma offerente (nec gonidia). Apothecia in lamina frondis thal- 
ling sparsa innata (numquam marginalia); spore fusce bilo- 
culares. 
IV. — SOLORBINA Ach. 
Thallus fragilis, strato cortieali subtus haud continuato (ibique 
interdum obsolete nervosus). Apothecia rotundata vel oblonga, 
Coloris spadiceo-rufescentis vel fusco-nigri. In speciebus Scan- 
dinavicis stratum gonimon est viride. 
1. S. erocea (L.) Ach., Nyl. Syn. p. 329, t. 8, f. 40. 
Thallus pallido-cinerascens vel cinereo-rufescens vel cinna- 
momeo-cinerascens (statu humido obscure virescens) levis (latit. 
1—3-pollicaris) laciniato-lobatus, margine undulato, subtus cro- 
Ceus (nervis concoloribus aut obscuris); apothecia fusca vel 
