168 MISSION DU CAP IIORN. 



Trib. XIV. GRAPHIDEiE. 



80. Melaspilea (Sect. Holographa) stenocarpa Mùller Arg. 



Thallus virenti-albidus, tenuissimus, continuus et Isevigatus aat par- 

 tim evanescens, margine effusus; lirellse confertse, hinc inde gregatim 

 subeonfluentes, lineares, rectae aut ssepius leviter flexuoso-curvulse, 

 imm.jmm \ on ax basi tecta j mm latse, in sectione ob basin dilatatam 

 triangulares, basi compléta? at interdum pallidiores, cseterum niger- 

 rimse; labia conniventia, demum modice biantia; asci oblongo-obo- 

 voidei, apice pachydermei, 8-spori; sporse ia^-iSMongse, 4^-5^ latse, 

 oblongo-obovoidese, e byalino fuscidulse, 2-loculares, loculus superior 

 vulgo distincte latior. — Lichen prima fronte perfecte cum Opegrapha 

 atrax&r. stenocarpa b. abbreviataYr. (Hepp, Flechten Euro pas, n°342) 

 convenire videtur, attamen leviter est gracilior, lirellse minus emersse, 

 et sporse dein omnino alise. 



In cortice Fagi betuloidis ad baie Orange, Terre de Feu (Hariot, 

 n" .rlpr.p ). 



81. Opegrapha pseudo-agel^a Mùller Arg. 



Thallus olivaceo-fuscescens, demum decolorato-albescens, tenuis- 

 simus, nonnihil insequalis, margine effusus aut linea nigra limitatus; 

 lirellse subgregatim confertse, copiosse, varie curvulse, basi immersse, 

 nigrse, opacse; labia subacuta, e clauso mox latiuscule hiantia et tre- 

 muloso-subundulata; perithecium completum, basi late rotiindatum; 

 sporse in ascis oblongo-obovoideis 8-nse, hyalinse (vetustate contractse 

 et nigrescentes), 4-loculares, i4 !i -i8 i; ' longse, 6^-7^ latse, elongato-obo- 

 voidese, utrinque lateobtusse. — Prima fronte simillimaest Op. agelœœ 

 Fée, a qua differt lirellis paullo tenuioribus, basi immersis, labiis haud 

 semicylindrico-turgidis, nec arcte conniventibus nec rectis. Sporse 

 utriusque conveniunt. 



Ad corticem Drimydis ]\'interi in insula Wollaston (Hariot, n° 36 

 pr. p.), nec non ad corticem Fagi betuloidis (Hariot). 



