Acta Societatis pro Fauna et Flora Fennica, 49, N:o 2. 11 



mensis: Muonio (J. P. Norrlin). Kuusamo: Poussu (Vain.). 

 Karelia Keretina: Knasa (P. A. Karsten), Ruanjarvi (N. I. Fell- 

 man). Ostrobotnia bor. : Kaaranas in Turtola (Hj. Hjelt, R. Hult), 

 Kiiminki (Edvin Nylander), Oulu (Graefle). Ostrobotnia Kaja- 

 nensis: Koivaja in Kuhmo (Vain.). Karelia Pomorica Occid.: 

 Luvajarvi, Vonkanjarvi et Koroppi (Vain.). Karelia bor.: 

 Porosaari in Nurmes (Vain.), Kalliovaara et Nevala in Lieksa. 

 Sec. specim. in Mus. Fenn. item in Savonia bor. (K. Linkola, 

 T. J. Hintikka), Karelia Onegensis, Tavastia bor. (Vain. Fl. 

 Tav. Or. p. 120), Satakunta, Tavastia austr. (locis numerosis), 

 Savonia austr., Karelia Ladogensis, Karelia Onegensis, Ka- 

 relia Olonetsensis, Regio Aboensis, Nylandia (Ofverby in 

 Kyrkslatt: A. Kullhem), Karelia austr. (ad lapides littorales: 

 Vain. Lich. Vib. p. 71; Hamina: Edvin Nylander). 



Thallus raro subinteger, vulgo profunde lobatus, superne et 

 inferne jam in eodem specimine colore variabilis, KHO non rea- 

 gens, siccus crass. 0,160 — 0,220 mm, humidus 0,300 — 0,400 mm, 

 semper pruina destitutus, sed superne saepe pulvere inspersus aut 

 late obductus albido, e crystallis acicularibus, tenuissimis, in aqua 

 facile dissolutis, quae cum pruina amorpha non commisceantur. 

 Gonidia pleurococcoidea, globosa aut subglobosa, simplicia diam. 

 0,005 — O.oio mm, haud raro 2(— 4)-cellulosa, membrana modice 

 incrassata. Stratum medullare hyphis 0,003 — 0,002 mm crassis, 

 leptodermaticis, parum conglutinatis. Stratum corticale superius 

 0,020 — 0,025 mm crassum, plectenparenchymaticum, sat leptoderma- 

 ticum, cavitatibus 0,004 — 0,006 mm latis. Zona gonidialis item 

 plectenparenchymaticum. Stratum corticale inferius circ. 0,050 mm 

 crassum, plectenparenchymaticum, sat leptodermaticum, cavitati- 

 bus angulosis, 0,012 — 0,004 mm latis, summis minoribus, circ. 10 

 superpositis. Apothecia crebra, minus saepe evoluta, quam coni- 

 dangia (haec tantum in thallis diversis visa), thallo immersa aut 

 interdum verruculas leviter prominentes formantia. Nucleus jodo 

 caerulescens aut demum violascens. Periphyses numerosae, consti- 

 patae, long. circ. 0,040, crass. 0,0025 — 0,002 mm, increbre septatae. 

 Paraphyses in gelatinam diffluxae, striis indicatae. Asci saepe 

 clavati, long. 0,070 — 0,060, crass. 0,014 — 0,012 mm, membrana gela- 

 tinosa. Sporae oblongae aut ellipsoideae, apicibus obtusis aut 

 rotundatis, simplices, long. 0,oh — O.oie, crass. 0,oos— 0,oos mm (sec. 

 Arn. Lich. Tirol XIII p. 249 long. 0,012— 0,oi5, crass. 0,oos mm, 

 sec. A Sm. 1. c. long. 0,oio — O.oie, crass. 0,ooe — 0,009 mm). Coni- 

 dangia thallo immersa, irregulariter lacerato-cavernosa, ostiolo 

 communi aut ostiolis pluribus crebre aggregatis contiguisve, mar- 



