178 
ÅA. — Species thecis normaliter 1—2-sporis. — Species 1—5. 
1. P. bryontha (Ach.); Lecanora bryontha Ach. L. U. p.. 
392, Syn. p. 156; Pertusaria macrospora Hepp HFlecht. 424. 
Thallus albus vel albidus tenuis obducens, granulis conco- 
loribus sparsis sepius inequalis; apothecia sordide livido-- 
hepatica vel sordide fuscescentia opaca (tenuiter rugulosa) le- 
canoroidea (latit. 1,5—3 millim., vel interdum paullo minora); 
margine thallino demum depresso vel excluso; thece mon 
spore, spor longit. 0,150—0,230, crassit. 0,050—70 milli 
Supra muscos et gramina destructa in Lapponia rarius (Wa 
lenberg, BORNARrietEd 
Ifenii, qu 
Så FAL ostendunt in apothecia RO IgE Ecrustacea 
Dovre FAN P. bryontha in Th. Fr. Exs. 9 nominatur ”Pionospo 
bryontha”, novum genus sine TN 4påslle Massalong 
PR ANG 
2. P. communis DC. Fl. Fr. 2, p. 320, Fr. L. E. 
420; Porina pertusa Ach. L. U. p. 308, Syn. p. 109. 
Thallus albido-cinerascens glabriusculus vel rugosus verru 
obsitus crebris (vel ex iis quasi verrucoso-areolatus); apoth 
cia (plerumque 2 vel nonnulla in quavis verruca tali thallina 
ostiolis minutis punctiformibus (vulgo mnonnihil depressis) n 
gris vel nigricantibus; spore (1—3 in quavis theca) longit. 
0,130—0,160, crassit. 0,045—60 millim. | 
Ad cortices varios in Suecia presertim meridionali et usque” 
in mediam procedens. Adhuc in Alandia. d 
Endocarpon sazicola B rupico är Smmrf. 2 SR 135 sit P. comm 
öde (var. areolata [Clem., Ach.] Fr. L. lan; ad rupes in 
Nordlandia. Quoque typus saxicola in Suec beskri ex hb. Ach: 
Variat sporis paullo majoribus. Sub nomine SPorer a pertusa var. pr 
nara” Ach. in hb. adest P. communis  ÄteR apotheciis erumpentibus, 
in ligno pineo e Suecia. — Variat sterilis, statu variolarioideo, et 
tune Variolaria communis a. orbiculata Ach. L. U. p. 323, Syn. P- 
3. P. eoeeodes. Isidium coccodes Ach. L.U. p. 578, Syn 
p. 283; Pertusaria ceuthocarpa' Nyl. Prodr. p. 98 (Fr. L. E: 
p-A3 pr. pp - 
