Acta Societatis Pro Fauna et Flora Fennica, 49, N:o 2. 9 



convolutis complicatisque, lateralibus et interdum centralibus 

 quoque explanatis concavisque, superne cinereus vel pallido- 

 cinerascens, tenuiter pruinosus, inferne testaceus aut partim 

 pallescens fusr.escensve, superne inferneque laevigatus. 



Distr. In rupibus, praesertim graniticis, praeruptis, sub- 

 humidis aut plus minusve irrigatis et in fissuris rupium saepe 

 cum var. umbilicata passim in provinciis australibus mediis- 

 que territorii provenit. Lapponia Enontekiensis: Ad Kilpiseno 

 et Koltapahta (J. P. Norrlin), haud bene a D. fluv. var. deci- 

 piente (Mass.) differens. Lapponia Kemehsis: Ahmakallio in 

 Sodankyla (Edvin Nylander). Ostrobotnia bor.: Ad Alkkula 

 (Edvin Nylander), forsan v. decipiens. Ostrobotnia Kajanensis: 

 Saarenkoski in Kianta (Vain.), forsan v. decipiens, Sotkamo 

 (A. Chydenius). Locis numerosis in Karelia Onegensi (A. 

 Kullhem, J. P. Norrlin). Karelia Olonetsensis: Vosnessenje 

 (F. Elfving). 



In f. imbricatan (Mass.) saepe transit. Gonidia pleurococcoidea. 

 Thalius humidus crass, vulgo 0,350 — 0,400 mm, textura sicut var. 

 umbilicata. Stratum medullare hyphis horizontaliter dispositis, 

 0,oo3 (0,002 — 0,004) mm crassis, sat leptodermaticis, partim conglu- 

 tinatis. Apothecia crebra. Periphyses numerosae. Sporas vidi 

 ellipsoideas et ovoideas, long. 0,on — 0,oi3, crass. 0,005 — 0,oo6 mm, 

 apicibus rotundatis aut obtusis. Nucleus jodo caerulescens. Thalius 

 vulgo minor, quam in v. umbilicata, et magis profundiusque lo- 

 batus. Garov. 1. c. duas formas v. complicatae distinxit: „macro- 

 phyllum, h. e. lobis rotundatis, majoribus, dilatatis, laxe imbricatis, 

 auriculaeformibus, microphyllinum, lobis minutis, arete imbricatis, 

 subinfundibuliformibus". Ambae formae in Fennia collectae sunt. 



2. D. fluviatile (Web.) Th. Fr. 



Lich. Arct. (1860) p. 254. Lichen fluviatilis Web. Spic. Fl. Gott. 

 (1878) p. 265. Endocarpon fluviatile D. C. Fl. Fr. II ( 1805) p. 413; Wahlenb. 

 Fl. Lapp. (1812; p. 462; Fr. Lich. Eur. Ref. (1831) p. 409; Mass. Ric. 

 Lich. Crost. (1852) p. 184; Koerb. Syst. Lich. Germ. (1855) p. 101 ; Nyl. 

 Exp. Pyrenoc. (1858) p. 12, Lich. Scand. (1861) p. 265, Lich. Lapp. Or. 

 (1866) p. 168; Schwend. Unters. Flecht. II (1863) p. 185, tab. X f. 9; 

 Norrl. Bidr. Sydstr. Tav. Fl. (1870) p. 194, Ber. Torn. Lappm. (1873) 

 p. 343, Symb. Fl. Kar. (1878) p. 31; Vain. Lich. Vib. (1878) p. 71, Adj. 

 Lich. Lapp. II (1883) p. 164; Leopold Ant. Veg. Sodr. Tav. (1879) p. 130; 

 Gliick Entw. Flecht.-Spermog. (1899) p. 11, 24, 37, 77—79, 99, 104, 107. 

 E. miniatum D fluviatile Garov. et Gib. De Lich. Endoc. (1872) p. 266, 



