- 19 - 

 sporœ non hyalinae et perithecium basi incompletum est. — Corti- 

 cola ad Marabout in Oasi Katiyeh (Barb.). 



* 30. Opegra pha gj/rocarpoides MùW. Aïg. ; thallus tenuis, carneo- 

 albellus, pulverulentus, v. tlemum evanescens ; apolhecia 1, 4 ram. 

 lata, dimidio v, fere duplo longiora quam lata, utrinque obtusa, pro 

 magnitudine crassa. prominenter crasso marginata, margines nigri, 

 distantes, disons planus, cinereo-pruinosus ; peritbecium basi intè- 

 gre nigrum, hypothecium fuscum ; asci elongatoobovoidei, 8-spori ; 

 spor?e hyalinas, 6-loculares, late fusiformes. 25-33 ■'- longae, 9-10 ;;. 

 latœ. — Habita. Op. gyrocavpam Kbr. s. Ojh saxicolam Ach. simu- 

 lât, sed sporae 6-localares snnt. Ab Op. varia i. pulicari (saxicola) 

 Stizenb. recedit forma apotheciorum et sporis majoribus. — Calci- 

 cola prope Alexandriam (Aschers.). 



* 31. Chiodecton candidiimMïû. Arg. ; thallus tartareus, crassius- 

 culu-, candide albus, determinatus, continuus, supra in verrueas 

 tortuoso-irregulares leviter prominentes laevigatas et bine inde fere 

 indistinctas oligocarpicas abiens, unde apothecia irregnlariter gre- 

 gatini approximata ; apothecia valde inacqualia, ex orbiculari angu- 

 losa aut lobata, primum in verrucis profunde inclusa, dein subemer- 

 gentia et cinereo-velata, nuda et atra v. fusco-atra, thallo margina- 

 ta ; marge proprius niger et tenuissimus, apiceni laminai attingens, 

 V. etiam ornnino obsoletus, hjpotheciom basi valde obconico-incras- 

 satum, epithecium fuscum, lamina fiilvescenti subhjalina ; asci an- 

 gusti, 8-spori ; sporse hjalinse, fusiformes, 4-loculares, 20 \j- longae 

 et u. latse. — Ex affninitate C/i. albidi Leight. et proxiraum Ch. 

 aocotrnno MûU-Arg., at thallo albissirao, verrucis valde irregulari- 

 bus aut pro parte subindistinctis, apotheciis minus aggregatis et 

 sporis minoribus dlversum est. — Calcicolum prope Alexandriam 

 (Aschers.). 



32. AsTEROTREMA Mûll. Arg. gen. nov. Thallus evolutus (in specie 

 nota) nullus; apothecia peridialia, monohjraenia. ore demum astroi- 

 deo-lobato-dehiscentia et discum paullo denudantia ; paraphyses te- 

 nuissimse (spuriae), clathratim connexas ; asci subarthonioidei ; sporae 

 e hyalino fuscœ v. fuscescentes, transversim divisae. — Genus juxta 

 Asteroporum prope Mijcoporum locandum. 



Aster'otrema parasiticum Mûll. Arg. ; apothecia (in thallo alie- 

 no hospitantia) superficialia , 1/8-1/5 mm. lata, orbicularia v. 

 obsolète angulosa, sicca et madefacta opaeo-nigra, convexa, rugu- 

 losa, vertice saepe paullo coUapso-impressa ; perithecium in sectione 

 verticali undique sequale et îequicrassum, sat tenue, sub raicroscopio 

 fusco-nigrum ; lamina fuscescenti-pallida, tenax, se. paraphysibus 

 spuriis tenellis et aegre discernendis clathratim ramosis cohaerens ; 

 asci oblongo-obovoidei, apice modice incrassati, 8-spori ; sporse 13- 

 17 ^. longte. 7-8 [j. latas, oblongato-obovoideœ, utrinque obtus», 4- 

 loculares, hyalinae, dein fuscescentes. — In thallo Callopismatis py- 

 racei in Aegypto submediterranea prope Alexandriam et alibi lec- 

 tum (Aschers., Barb.). 



* 33. Endopyreninm hepaticum Koerb. Par., p. 302 B. minntum 

 Miill. Arg. ; thalli areolœ saepius congestae, fere thallum diifracto- 

 arcolatum formantes, 1/2-1 mm. latas, horizontales, adnatae, plana) 

 v. margine obsolète incurvae, obtuse angulosae. hinc inde 2-3-plo ma- 

 jores, brunneo-fuscae et crassiusculae. Apothecia ignota. — Thallus 



