212 Acta Societatis pro Fauna et Flora fennica, VII. 



stitutum, extus dilute pallescens, intus albidum, cellulis anguloso- 

 globosis, irregulariter clispositis. Hypothecium pallidum, sat mi- 

 nute parenchymatieum. Hymenium circ. O.045 — 0,050 millim. 

 crassum, jodo persistenter caerulescens. Epifhecium livido- vel 

 eaerulescenti-nigricans aut pallidum, KHO dilutescens. Paraphyses 

 arete cohaerentes, 0,ooi5 millim. crassae, apice paululum aut pa- 

 rum inerassatae (0,0 02 millim.), increbre septatae. Asci clavati, 

 circ. 0,oio — 0,0 8 millim. crassi, apice membrana paululum in- 

 crassata. Sporae 8:nae, distichae, simplices, decolores. 



Trib. 10. Heppieae. 



Thallns squamosus aut raro minute foliaceus, aut subfruti- 

 culosus vel tuberculiformisj rltizinis parcis aut gompho centrali 

 aut hypothallo evanescente instructus, homoeomericus aut hetero- 

 mericus, majore minoreve parte pseudoparenchymaticum, pseu&o- 

 parenchymate ex cellulis leptodermaticis majusculis constante. 

 Gonidia in zona infra stratum cortical e disposita aut in thallo 

 toto in interstitiis cellularum dispersa (baud late confluent ia), scy- 

 tonemea. Apothecia thallo immersa aut rarius demum margine 

 thallino basi constricto cincta. Paraphyses bene evolutae. baud 

 ramoso-connexae. Sporae breves, ellipsoideae oblongaeve aut glo- 

 bosae, decolores, simplices. Sterigmata exarticulata. 



1. Heppia. 



Naeg. in Hepp, Flecht. Eur. (1853) n. 40; Mass., Geneac. Lich. (1854) 

 p. 7 (emend.;; Koerb., Parerg. Lich. (1859—65) p. 25 (em.); Th. Fr.. Gen. He- 

 terol. (1861) p. 56 (em.); Mull. Arg., Princ. Classif. (1862) p. 37: Schwend., 

 Unters. Flecht. II (1863) p. 152, 178 (em.), tab. IX fig. 1; Tuck.. Gen. Lich. 

 (1872) p. 45 (em.). Syn. North Am. (1882) p. 114 (cm.); ' Nyl., Syn. Lich. II 



(1885) p. 44 (em.): Hue, Addend. (1886) p. 62 (em.). Peltula Nyl., Lich. Alg. 

 Nov. (1853 p. 316 (em.), Ktud. Lich. Alg. (l*X\ p. 322 (em.); Hue, Addend. 



(1886) ]». 63 (em.). Heterina Nyl., Syn. Lich. (1858—60) p. 138, em. (conf. 

 infra). Endocarpiscum Nyl., Fl. 1864 p. 487 (em.), Lich. Ang. (1869) p. 14 (em.); 

 Tuck., Syn. North Am. (1882) p. 113 (Schwend., [Inters. Flecht. II p. in;, rah. 

 X fig. 7 . Guepinetta Bagl., Nuov. Giorn. Lot. Ital. 1870 p. 171 tern.). 



TJiallus squamosus aut raro lore foliaceus (in II. Guepi- 

 nii), aul subfruticulosus vel tuberculiformis (sect. Heterina), co- 

 Lore superne olivaceus aul nigricans, rhizinis parcis aul gompho 



