338 E. A. Vainio, Lecideales. 



Obs. 1. L. seducta Nyl. (1. c.) est forma hujus specie!, tantum 

 thallo subcervino ab ea differens. Thallus KHO praesertim intus 

 lutescens deindeque rubescens, crystalla nulla rubra aciculariaque 

 formans. In Germania collecta est. 



Obs. 2. C. cinereovirens Miill. Arg. (1. c.) sec. specim. orig. in 

 herb. Nyl. non differt a Rh. ignobili Th. Fr., thallo instructa cinera- 

 scente, KHO lutescente deindeque rubescente. — L. eupetraeoides Nyl. 

 in En. Lich. Fret. Behr. (1888) p. 59 hue non pertinet, areolis thalU 

 majoribus, pallidis, dispersis, intus jodo caerulescentibus, a Rh. igno- 

 bili differens. 



35. Rh. polycarpum (Hepp) Th. Fr. 



Lich. Scand. II (1874) p. 617. Lecidea confervoides d. polycarpa 

 Hepp Flecht. Eur. I (1853) n. 35. Catocarpus polycarpus Arn. Lich. 

 Tirol XV (1876) p. 385, Lich. Fragm. XXIX (1888) p. 18, Lich. Munch. 

 (1891) p. 93, Labrador (1896) p. 16. C. confervoides Krempelh. Lich. 

 Bay. (1861) p. 200; Arn. Lich. Fragm. XII ,(F1. 1871) p. 147 (baud Rh. 

 confervoides D.C., conf. p. 292). Lecidea atroalbicans Nyl. Fl. 1875 

 p. 363, Lich. Pyr. Or. Obs. Nov. (1891) p. 37; Vain. Adj. Lich. Lapp. 



II (1883) p. 130, Exp. Antarct. Beige (1903) p. 33, Lich. Exp. Vegae 

 Pitlekai (1909) p. 115. 



Exs. Hepp Flecht. Eur. I (1853) n. 35. — Arn. Lich. Exs. (1870) 

 n. 437, (1873) n. 559 a- c, (1880) n. 852. - Zahlbr. Krypt. Exs. Vindob. 



III (1898) n. 265. — Havaas Lich. Norv. Exs. (1904) n. 201. — Malme 

 Lich. Suec. Exs. VI (1909) n. 149, XV (1913) n. 374. — Harm. Lich. 

 Loth. n. 1069 (sec. Lynge Ind. Lich. Exs. I p. 240). 



Thallus crustaceus, uniformis, areolatus aut raro ver- 

 rucosus, areolis verrucisque vulgo minutis, contiguis aut 

 raro dispersis, fuscescentibus cervinisve aut cinerascentibus 

 albidisve, baud pruinosis, esorediatis, KHO non reagentibus, 

 jodo caerulescentibus, hypothallo nigricante. Apothecia sat 

 parva, thallum baud superantia aut raro leviter prominentia, 

 nigra, nuda, disco piano aut raro demum depresso-convexo, 

 margine tenui, persistente aut demum excluso. Epithecium 

 fuligineum aut rubricoso-fuligineum fuscescensve. Sporae 

 8mae, decoloratae aut demum obscuratae, long. O.018 — O.030 mm 

 ( — 0.034 mm sec. Nyl.), crass. O.oos — O.oh mm, vulgo 1-septatae. 



Distr. Supra lapides et saxa, praesertim granitica, in 

 campis herbidis et aliis locis apricis sat rare aut passim, 

 raro etiam ad lignum vetustum et corticem Betulae, toto 

 territorio provenit. 



