186 'Discomycetse, Arthoniacesp, Conida. 



utrinque obtusis circ. 5-septatis, interdum constrictis, muriformi- 

 bus, hyalinis (immaturis?), 30*10. 



Hab. in ramis decorticatis Am el ancliier js, Cercocarpi, 

 Quercus, Rhus, Salicis, Hermosa, Colorado Amer. bor. 



TRYBLIDARIA Sacc. — Syll. VIII pag. 808 (ut snbgenus) et XIV, 

 p. 33, Rehm in Hedvv. 1903, p. (173) (Etym. a TryhUdio, cm af- 

 finis). — A gen. Blitrydio recedit ascomatibus patellaribus vel 

 suburceolatis, margiue tenui integro. 



1. Tryblidarla Breutelii Eehm in Hedw. 1903, p. (173). — Ascoma- 38i3 

 tibus gregariis, primitus cortici immersis, globulosis, clausis, dein 

 emergentibus, demum sessiUbus, versus basim subcontractis, orbi- 

 cularibus, urceolatis, tenuiter marginatis, disco plano albido, exci- 

 pulo crasso, glabro, nigro, juveniliter albido-priiinoso, parenchy- 

 matice fusce contexto, coriaceis 0,5-1,2 mm. diam. ; ascis clavatis, 

 apice rotundatis et valde incrassatis, in stipitem brevem elongatis 

 80-100 ^s* 26-30, octosporis; sporidiis obloiigis, obtusis, transverse 7- 

 11-septatis, ceterum muriformiter polyblastis, hyaUnis , demum 

 fusciduUs, strato mucoso tenui obductis, 30-50 *^ 12-15, distichis; 

 paraphysibus filiformibus conglutinatis 2 a. cr., apice subfusciduUs. 



Hdb. ad corticem Sterculiae sp. in Colonia Missionis Betha- 

 nia, S. Jan. Africse austraUs (Breutel). 



2. Tryblidaria nivalis (Bagl. et Carestia) Rehm in litt. Leciographa 3^14 

 nivalis Bagl. et Car. in Comm. Soc. critt. ital. II, p. 84 (1864). 



— Ascomatibus punctiformibus, subinnatis, dein emersis et omnino 

 superficialibus, primo tenuissime marginatis dein immarginatis et 

 convexis, rotundatis, disco coesio-pruinoso, dein nudo atro; aseis 

 ellipsoideo-ventricosis 6-8-sporis; paraphysibus crassiuscuUs apice 

 fuscescentibus ; sporidiis ovoideis v. subreniformibus, primo 1-3- 

 septatis, tandem ob septa verticalia 7-9-locularibus, fuligineo-fuscis 

 15-20 ^ 9-10. 



//a6. in thallo Amphilomatis elegantis in alpibus E,iva- 

 Valdobbia Ital. bor. — An ArtJiothelio Lahmiano proxima species ? 



Fam. 10. Arthoniaceae Rehm. 



CONIDA Mass. — Syll. X p. 75. 



1. Conida epimela (Norm.) Sacc. et D. Sacc Arthonia epimela Norm. 3^(15 

 ap. Almq. Monogr. Arthon. p. 56. — Ascomatibus adnatis, orbi- 



