Acta Societatis pro Fauna et Flora Fennica 49, N:o 2. 235 



dia cystococcoidea, globosa, diam. 0.006 — O.oos mm, simplicia aut 

 parce 2-cellu!osa, chromatophoro difformi, saepe substellari- 

 anguloso, dilute flavescenti-glauco, parce granuloso, sed nullo 

 pyrenoide distincto, vacuolis lateralibus, membrana distincta, tenui. 

 Obs. Specimina supra citata pertinent ad f. subcylindricam Vain. 

 (1. a), thallo subcylindrico instructam. 



3. Lepraria Ach. 



Fors. Lafv. Indeln. (N. Act. R. Ac. Sc. Suec. Holmiae XV, 1794) 

 p. 244, Lich. Suec. Prodr. (1798) p. 5, Meth. Lich. (1803) p. 3, Lich. 

 Univ. (1810) p. 662, Syn. Lich. (1814) p. 329; Nyl. in Hue Addend. II 

 (1888) p. 315. Pulveraria Ach. Meth. Lich. (1803) p. 1; Floerk. Magaz. 

 N. Entd. Naturk. Berlin 1807 p. 7. Lepra Hall. Hist. St. Helv. Ill (1798) 

 p. 102; Schaer. Lich. Helv. Spic. I (1823) p. 1, IV (1833) p. 208, Enum. 

 Lich. Eur. (1850) p. 239. 



Status imperfectus lichenum, apotheciis et conidiis 

 destitutorum. Thallus leprosus, sorediis fere totus obductus, 

 crustaceus, hyphis decoloribus. Ad plura genera, velut ad 

 Crocynias et Calicia, pertineant. Gonidia chlorophycea, 

 globosa, simplicia aut demum glomerulosa. 



1. L. flava (Schreb.) Ach. 



Lich. Suec. Prodr. (1798) p. 6, Lich. Univ. (1810) p. 663, Syn. 

 Lich. (1814) p. 330. Lichen flavus Schreb. Spic. Fl. Lips. (1771) p. 139; 

 Hoffm. Enum. Lich. (1784) p. 2, tab. I f. 4. Lepraria citrina 6. flava 

 Ach. Meth. Lich. (1803) p. 180. Pulveraria flava Floerk. 1. c. 



Thallus totus sorediosus, sorediis subtilissimis, tenuis, 

 citrino-fulvescens, KHO non reagens, KHO cum CaCl 2 2 

 dilute rubescens. 



Distr. Ad parietes ligneos et corticem abietis collecta. 

 Non sit rara, sed a collectoribus neglecta. Alandia (Edvin 

 Nylander). Satakunta: Merikarvia(A. J. Malmgren). Nylandia: 

 Stansvik in Degero prope Helsingforsiam (Vain.). 



Reactio supra indicata etiam in specimine orig. Achariano 

 in herb. Ach. observatur. Thallus hyphis O.0015 mm crassis. 

 Gonidia globosa, diam. O.007 — O.010, raro — O.015 mm, vulgo sim- 

 plicia, interdum autosporas plures continentia, cystococcoidea, 

 membrana sat tenui. Subsimilis Leprariae xanthinae Vain. (Cat. 

 Welw. Afr. Lich., 1901, p. 463), quae autem KHO cum CaCl 2 2 

 virescenti-nigricans. Forsan est automa species Calicii, sed 

 numquam apotheciis visa. Lecanora (Candelariella) xanthostigma 



