ßfasilianische Flechten. 361 



Peridien und die größeren Sporen trennen unsere Art auch von 

 Mycoporopsis roseola Müll. Arg. in Bullet, soc. bot. Belgique, 

 vol. XXXII, 1893, p. 161, deren Sporen 4- bis 6-zellig sind und 

 von Mycoporopsis tantilla Müll. Arg. 1. c, deren Sporen in 

 2 bis 4 Fächer gegliedert werden. 



Arthopyrenia (sect. Anisomeridium) anisoloba Müll. Arg. 

 in Flora, vol. LXVI (1883), p. 305. 

 Ic: Tab. II, Fig. 23. 



Thallus epiphloeodes, tenuis, 35 — 40 ;x altus, albus vel 

 glaucescenti-albidus, effusus, continuus, laevigatus, subvernico- 

 sus, in margine linea obscuriore non circumdatus, KHO-, 

 CaClgOa — , ecorticatus, fere totus gonidia continens; hyphis 

 meduUaribus tenuibus, leptodermaticis, non amylaceis; gonidiis 

 chroolepoideis, cellulis concatenatis, subgiobosis vel ovalibus, 

 5 — 9 [JL longis, membrana sat tenui. 



Apothecia solitaria vel hinc inde glomerulato-confluentia, 

 parva, 0*3 — 0'4 mm lata, subdepresso-globosa, semiimmersa, 

 nigra, nuda, nitidiuscula, vertice aequali, ostiolo tenuissimo 

 haud conspicuo; perithecio fuligineo, integro, basi tenuiore, in 

 sectione verticali extrorsum anguloso; nucleo hyalino, parce 

 oleoso, I haud reagente; paraphysibus capillaribus, 1-5 — 1'8[jl 

 crassis, laxe intricatim connexo-ramosis, gelatinam copiosam 

 percurrentibus; ascis hymenio multo brevioribus, ellipsoideo- 

 clavatis, 70— 80[jl longis et 18 — 21 [jl latis, mox evanescentibus, 

 membrana sat tenui, 8-sporis; sporis in parte superiore ascorum 

 biseralibus, in parte inferiore uniserialibus, hyalinis, cuneato- 

 obovoideis, rectis, inaequaliter bilocularibus, 14 — 19 [x longis et 

 7 — 10 [JL latis, loculo superiore inferiore circa duplo longiore et 

 parum latiore, episporio et septo mediocri (circa 1 '6 [x crasso), 

 I lutescentibus, halone non indutis. 



Pycnoconidia non visa. 



Ad cortices arborum laevigatos in horto botanico Janeirensi 

 (Höhnel, Nr. 152). 



Pseudopyrenula subnudata Müll. Arg. in Flora, vol. LXVI 

 (1883), p. 249 et 272. 

 Ic: Tab. II, Fig. 3. 



Sitzb. d. mathem.-naturw. GL; CXI. Bd., Abth. I. 25 



