Acta Societatis pro Fauna et Flora Fennica, 53, N:o 1. 307 



15. Rh. Oederi (Web.) Koerb. 



Parerg. Lich. 3 Lief. (1861) p. 232; Arn. Lich. Fragm. XII (Fl. 1871) 

 p. 149. Rh. distinctum *Rh. Oederi Th. Fr. Lich. Scand. II (1874) p. 626. 

 Lichen Oederi Web. Spic. Fl. Goett. (1878) p. 182 (L. leprosus ruber 

 Oed. Fl. Dan. VIII p. 8, tab. 470 f. 1). Lecidea Ach. Meth. Lich. (1803) 

 p. 49; Nyl. in Norrl. Bidr. Syostr. Tav. Fl. (1870) p. 191. L. petraea 

 *L. Oederii Nyl. Lich. Scand. (1861) p. 234. Rh. petraeum ,9. Oederi 

 Koerb. Syst. Lich. Germ. (1855) p. 260; Th. Fr. Lich. Arct. (1860) p. 

 235. L. atroalba v. oxydata Fr. Nov. Sched. Crii. (1827) p. 18, Lich. 

 Suec. Exs. XIII (1827) n. 384 (in mus. Paris, et herb. Nyl.). 



Exs. Fr. 1. c. — Hepp Flecht. Eur. Ill (1860) n. 508 (sec. Arn. 

 Lich. Tirol XXV, 1893, p. 403). — Rabenh. Lich. Eur. Exs. 26 (1864) 

 n. 724. — Norrl. et Nyl. Herb. Lich. Fenn. VII (1882) n. 373. — Arn. 

 Lich. Exs. (1895) n. 1662. — Malme Lich. Suec. Exs. VII (1910) n. 174. 

 — Havaas Lich. Norv. Exs. (1913) n. 446, Lich. Norv. Occ. II (1913) 

 n. 45. 



Thallus crustaceus, uniformis, areolatus, areolis conti- 

 guis, vulgo minutis, planis aut rarius p. p. convexis et 

 verruculaeformibus, laevigatis, ochraceo-ferrugineis, KHO 

 non reagentibus, medulla jodo violascente aut vix distincte 

 reagente, hypothallo nigro aut evanescente. Epithecium 

 subcaeruleo-nigricans. Apothecia minuta, nigra, nuda, vulgo 

 plana, tenuiter marginata, disco saepe papillato inaequalive. 

 Sporae 8:nae aut 4:nae, decoloratae aut raro demum obscura- 

 tae (sec. Th. Fr.), 4-septatae aut raro demum submurales 

 (sec. N}^.), long. O.015— O.021 mm ( — O.023 mm sec. annot. Nyl.), 

 crass. 0.007 — O.009 mm (O.ooe — O.oio mm sec. Th. Fr.). 



Distr. Supra rupes et saxa ferrum continentia, prae- 

 sertim gneissacea, aut granitica schistosave, locis siccis 

 apricisque (nee „locis saepius inundatis", ut indicat Th. Fr.). 

 Ab.: Runsala prope Aboam (A. Kullhem). N.: Abrahamsby 

 in Kyrkslatt (Vain.). Ta.: Locis numerosis in Tammela 

 (A. Kullhem), Rauvala (F. Silen) et Kaila (J. P. Norrlin) in 

 Asikkala, Kirkonkyla, Jokioinen, Arakoski in Padasjoki 

 (Vain.), Ronni in Lammi (C. Leopold), Kesain et Tientaali 

 in Luhanka, Paivakunta in Korpilahti, et alibi (passim sec. 

 Vain, in Fl. Tav. Or. p. 117). Sa.: Savonlinna (0. Carlenius). 

 Oa.: Lolu (A. J. Malmgren). Sb.: Pitkalahti in Kuopio 



