Acta Societatis pro Fauna et Flora Fennica, 53, N.o 1. 269 



A. Epithecium KHO non reagens (obscurum aut raro palli- 

 dum). 



a. Thallus sorediis destitutus. 



t Sporae solitariae. 



1. Sp. pezizoldeum (Ach.) Vain. Thallus inaequalis, baud isi- 

 diosus. 269. 



2. *Sp. coralloideum (Nyl.) Vain. Thallus isidiosus. 271. 



tt Sporae 8:nae. 



Sp. fecundum (Tb. Fr.) Vain. Thallus verruculoso-inaequalis. 

 273. 



/?. Thallus soraliis instructus. 



3. Sp. betulinum (Hepp) Vain. Sporae 8:nae, cellulis paucis. 273. 



B. Apothecia KHO violascentia (aut in specibus exoticis cya- 

 nescentia). 



Sp. fuscoluteum (Dicks.) Vain. Epithecium fulvescens. Spo- 

 rae solitariae. 275. 



1. Sp. pezizoideum (Ach.) Vain. 



Lecidea pezizoidea Ach. Lich. Univ. (1810) p. 182, Syn. Licb. (1814) 

 p. 26; Nyl. Lich. Scand. (1861) p. 212. Heterotheciam pezizoideum Flot. 

 Bot. Zeit. 1850 p. 553; Tuck. Syn. North Am. Licb. II (1888) p. 58. 

 Lopadium Koerb. Syst. Licb. Germ. (1855) p. 210; Tb. Fr. Licb. Arct. 

 (1860) p. 201, Lich. Spitsb. (1867) p. 34, Lich. Scand. II (1874) p. 389; 

 Arn. Licb. Fragm. 35 Neufundl. (1896) p. 23; A. Sm. Mon. Brit. Lich. 

 II (1911) p. 199. 



Thallus crustaceus, inaequaHs, esorediatus. Apothecia 

 peltata aut subturbinata, basi bene constricta, disco concavo 

 aut piano, nigro, baud pruinoso, margine concolore aut 

 pallidiore, modice incrassato, persistente. Epithecium fusce- 

 scens aut fusco-fuHgineum. Hypothecium fuscescens aut 

 paUido-fuscescens. Paraphyses baud ramoso-connexae. Spo- 

 rae solitariae, decoloratae paUidaeve aut rarius fusco-fuligi- 

 neae, oblongae, long. 0.o48 — O.135, crass. O.020 — O.042 mm ( — 0.046 

 mm sec. Th. Fr.), murales, cellulis numerosissimis. 



Var. muscicola (Sommerf.) Vain. Lecidea muscicola Sommerf. 

 Vet. Ak. Handl. 1823 p. 113, Suppl. Fl. Lapp. (1826) p. 159. Lopadium 

 muscicolum Koerb. Parerg. Lich. 2 Lief. (1860) p. 175. Lopadium pezi- 

 zoideum ;3. muscicolum Th. Fr. Licb. Scand. II (1874) p. 389. Lecidea 

 pezizoidea var. muscicola Vain. Adj. Licb. Lapp. II (1883) p. 108, Licb. 

 Exp. Vegae Pitlekai (1909) p. 108. L. pezizoidea Ach. 1. c. (sec. herb. 

 Ach.); Nyl. Lich. Lapp. Or. (1866) p. 156 (excl. var.). 



