200 E. A. Vainio, Pyrenocarpeae. 



Koerb.), Lich. Scand. (1861) p. 280, Lich. Paris (1896) p. 123. Acrocordia 

 Koerb. Syst. Lich. Germ. (1855) p. 356; Arn. Lich. Frank. Jur. (Fl. 

 1885) p. 267, Lich. Munch. (1891) p. 117. 



Exs. Floerk. Deutsch. Lich. (1821) n. 169. Flot. Lich. Exs. 

 (1829) n. 38 (secund. Arn, Lich. Frank. Jur. p. 267 1. - Hepp Flecht. 

 Eur. (1853) n. 104. — Nyl. Herb. Lich. Par. II (1855) n. 93. — Zwackh 

 Lich. Exs. (1850) n. 32 B (Arn. 1. c). — Rabenh. Lich. Eur. IV (1856) 

 n> gg. _ Stenh. Lich. Suec. Exs. (1860) n. 88 (Arn. 1. c). 



Thallus tenuis, laevigatus, albidus aut sordide albicans, 

 hypothallo indistincto. Apothecia sparsa, adnata, verrucas 

 formantia mamillares, 0.7— 0.5 mm latas, nigras, nudas. 

 Perithecium fusconigrum, dimidiatum, margine ostiolari conoi- 

 deo-prominente, ostiolo parvo. Asci cylindrici, membrana 

 modice incrassata. Paraphyses numerosae, increbre ramoso- 

 connexae. Sporae monostichae, ellipsoideae, 1-septatae, 

 loculis aequalibus, long. circ. O.oh— O.020, crass. O.010— O.011 mm. 



Distr. Ad corticem Fraxini, Quercus, Ulmi et Sorbi 

 collecta. Alandia (Edvin Nylander), Dano ad Geta (K. Lin- 

 kola). Regio Aboensis: Ramsholm (Edvin Nylander, Fr. 

 Elfving), Ispoinen (K. Linkola), Torhola et Jalassaari (Eke- 

 berga) in Lohja (C. E. Boldt, H. Lindberg). Nylandia: Rase- 

 borg (A. Kullhem, Vain.). 



Thallus continuus, leviter nitidus, KHO non reagens. Apo- 

 thecia ad basin praerupta aut sat praerupta, opaca aut leviter nitida. 

 Nucleus albidus, haud resinoso-guttulosus, jodo non reagens, 

 metaplasmate subrubescente. Perithecium basi deficiens. Asci 

 long. circ. O.ho, crass. O.012— O.014 mm. Sporae 8:nae, decolores, 

 apicibus rotundatis, membrana laevigata, modice incrassata, haud 

 geiatinosa, observante Nyl. „long. O.012— O.027, crass. O.oob — O.012 

 mm" (Exp. Pyrenoc. p. 53) et „long. O.ois— 024, crass. O.oos— O012 

 mm" (Lich. Paris p. 123). Sterigmata „simplicia, long. O.013— oie 

 mm" (Tul. Mem. Lich. p. 217). Microconidia „recta, long. O.003, 

 crass. O.001 mm" (Nyl. 1. c), „long. O.0017— O.0032, crass. O.001— 0013 

 mm" (Linds. Mem. Sperm, p. 294). Stylosporae (macroconidia) 

 „l-septatae, long. O.009— O.011, crass. O.003 — O.004 mm" (Lahm Zus. 

 Westfal. Flecht. p.) 147. Gonidia ad Trentepohliam pertinentia, 

 cellulis anguloso-globosis, lat. O.010— O.012 mm, concatenatis, bene 

 constrictis. 



2. A. sphaeroides (Wallr.) Vain. 



Verrucaria sphaeroides Wallr. Comp. PL Germ. Crypt. (1833) p. 

 300. Acrocordia Arn. Lich. Frank. Jur. (Fl. 1885) p. 267, Lich. Munch. 



