(13) J. HÜLLER. SERTUM AÜSTRAL1ENSE. 323 



tantum 8/100-13/100 m ni. lata, punctuliformia, primum thallino-velata, 

 mox oudata et opaco-atra, irregulariter stellatim aperientia, evoluta 

 subemersa; perithecium laterale, mfo-nigrum, basi deficiens; sporae in 



ascis oblongato-obovoideis 8-nae, 12-13 ja long», 6 [a latae, obovoideae, 

 fuscae, 2-loculares. — Proxime affine est A. orbiculino, se. MelaspUe<e 

 orbkulinœ Müll. Arg. L. Paraguay, n. 156, a quo statim recedit thalli 

 colore, thallo haud nitidulo, apotheciis minoribus et demura emersis. 



— Corticola, Queensland: Shirley n. 1855. 



42. Mycoporellum raicrospermum Müll. Arg. ; thallus pal- 

 lido-t'uscus, haloniformi-tenuis, hevigatus; apothecia 'A - 'A nun. lata, 

 plano-convexa, ambitu nonnihil thallino-velata, caeterum nuda et nigra y 

 majora oligocarpica, reliqua simplicia et magis regulariter orbicularia r 

 intus undique hyalina; asci obovoidei, 8-spori; sporae hyalinae, tantum 

 7-8 [i longae et 3-4 ;x latae. obovoideae, 2-loculares. — A reliquis jam 

 minutie sporarum differt. — Corticola ad truncos Banksise ad Chel- 

 tenham prope mare in prov. Victoria: Wilson n. 885 pr. p. 



43. Arthopyrenia (s. Mesopyrenia) suboculata Müll. Arg. ; 

 thallus argillaceo-albidus, tenuissimus, continuus et laevis v. sublaevis ; 

 apothecia nigra, V 2 nun. lata, hemisphaerica, regularia, opaca, vertice- 

 obsolete impressa et ibidem fuscidula; perithecium basi deficiens v. 

 valde attenuatum; paraphyses laxe connexae; sporae in ascis biseriatim. 

 8-nae, 13-16 jj. longae, 6V2-8 jx latae, utrinque late obtusae, 4-loculares.. 



— Est proxima A. oculaùe Müll. Arg., sed thallus non cretaceo-albus- 

 et spermogonia multo majora, et magis emersa, 4/10-5/10 mm. lata r 

 spermatia tenuissima, 2-3 (i longa. — Corticola, Queensland : Knight 

 n. 199. 



44. Arthopyrenia (s. Anisomeridium) dirumpens Müll- 

 Arg.; thallus glauco-albidus, tenuissimus, mox incomplète v. hinc 

 inde complète disrupto-undulatus aut-rugulosus; apothecia 35/100- 

 43/100 mm. lata, hemisphaerica, nigra et nuda, opaca v. demum ver- 

 tice integro nitida ; perithecium basi valde attenuatum, fere planum ; 

 paraphyses laxe connexae, firmae; sporae in ascis subbiseriatim 8-nae,. 

 13-15 fi, longae et 6-7 51 latae, obovoideœ, 2-loculares, loculus inferior 

 angustior et brevior. — Juxta proximas A. Féeanam et A. subbifor- 

 mem Müll. Arg. inserenda est, a quibus simul thallo glaucescente, non 

 continuo-laevissimo differt. — Corticola, New South-Wales : Knight 

 n. 13, 27. 



45. Porina(s. Segestrella) fulvulaMüll. Arg.; thallus pallido- 

 olivaceus, tenuissimus, continuus et ruguloso-scabridus; apothecia (sat. 



