100 E. A. Vainio, Pyrenocarpeae. 



3. P. terrestris Th. Fr. 



Lich. Arct. (1860) p. 265, Polybl. Scand. (1877) p. 15 (haud Verr. 

 terrestris Arn.); Vain. Lich. Exp. Amdrup (1905) p. 140; Jatta Fl. It. 

 Crypt. Lich. (1911) p. 856. Polymastia terricola Bagl. Lich. Sard. (N. 

 Giorn. Bot. It. 1879) p. 113. Thelotrema verrucoso-areolatum Anzi Lich. 

 Rar. Langob. Exs. VI (1861) n. 236 (haud Lecanora atra ?. verrucoso- 

 areolata Schaer. Enum. Lich. Eur., 1850, p. 73). 



Icon. Garov. et Gib. Tent. Lich. Longob. IV (1868) tab. 8 fig. 6. 



Exs. Anzi Lich. Rar. Langob. Exs. VI (1861) n. 236. 



Thallus sat cfassus aut sat tenuis, verruculoso-inaequalis, 

 diffractus aut dispersus, albido-cinerascens aut cinereo-vire- 

 scens, hypothallo indistincto. Apothecia sparsa, verrucas for- 

 mantia 0.5 (0.6— O.4) mm latas, subglobosas aut depresso- 

 subglobosas, basi leviter constrictas aut praeruptas, amphi- 

 thecio instructa thallino, bene evoluto, leviter verruculoso 

 aut sat laevigato, thallo concolore, margine ostiolari an- 

 gustissime cinereo-nigricante subdenudatoque (O.15 — O.2 mm 

 lato), haud prominente, interdum demum impresso, ostiolo 

 O.1—O.2 mm lato, umbilicato-foveolato. Perithecium integrum, 

 fusco-fuligineum, ad ostiolum rubricoso-rufescens. Sporae 

 8:nae, decolores, demum pallidae, murales, cellulis numero- 

 sissimis, long. O.040— O.058, crass. O.020— O.023 mm (secund. Nyl. 

 in sched. long. — O.068, crass. — O.027 mm), observante Th. Fr. 

 ,,long. O.044 — O.075, crass. O.ois— O.028 mm". 



Distr. In lapidibus ad Kitkajoki in Kuusamo (F. Silen). 

 Supra terram nudam lapillosque immixtos et raro ad saxa 

 friabilia in Scandinavia secundum Th. Fr. 



Perithecium globosum, KHO non reagens, amphithecio go- 

 nidia continente fere omnino obductum. Nucleus albidus, parum 

 resinoso-guttulosus, jodo subroseus, haud caerulescens, gonidiis 

 hymenialibus nullis. Paraphyses in gelatinam diffluxae, cavitates 

 striis distinctis indicatae. Periphyses numerosae, irregulariter 

 constipatae, simplices, long. circ. O.oco, crass. O.0015 mm, increbre 

 septatae, sine limite transeuntes in paraphyses et in hoc statu 

 elongatae et tubulis distinctis, e strato interiore membranae for- 

 matis, strato exteriore membranae gelatinoso-incrassato. Asci 

 subclavati, long. circ. O.150, crass. O.050 mm, membrana demum 

 tenui, molli. Sporae distichae, ellipsoideae oblongaeve, apicibus 

 rotundatis, membrana tenui, haud gelatinosa, jodo non reagentes. 

 Gonidia pleurococcoidea. 



