31(5 BULLETIN DE L'HERBIER BOISSIER. (4) 



proprii superne nigricantes ; thalainium basi coluinnula valide nigra 

 prœditum; sporae fuscae, 15-22 jxlongae, 8-12 ^ latae, ellipsoideae, 4-locu- 

 larcs, loculi omnes v. intermedii bilocellati. — Juxta L. polycarpum 

 Müll. Arg. inserenduni. — Corticola, Queensland : Knight n. 22. 



11. Leptotrema semulum Müll. Arg. ; thallus albus, tenuis et 

 continuus, farinulentus, lsevis aut obsolete rugulosus ; apothecia 3 A- 

 1 mm. lata, nano-hemisphaerica v. hinc inde obsolete tantum emergen- 

 tia, obtuse marginata; ostiolum demum V 5-1 / 3 mm. latum; perithecium 

 interius apice vix nisi striguliforme, fuscunr, reliqua interiora ornnia 

 hyalina; columella basilaris deficiens ; epithecium strato albo obtectum; 

 sporae 4-nae (raro etiam 5-6-nae), 40-60 [i longae, 10-13 [x latae, 14-16- 

 loculares, loculi latiores 2-3-locellati, reliqui ultimi simplices. — Simile 

 L. patulo Müll. Arg., sed sporae duplo triplove minores et in ascis 

 magis nurnerosae et intus longe minus divisée. Sporae L. patuli vulgo 

 solitarise sunt, et loculi, magis numerosi, omnes copiose locellati, locelli 

 in quaque série axili 5-7. — Simile Phseotretna consimile sporis omnino 

 differt. — Corticola, Queensland : Knight n. 27, 295, et Victoria : 

 Knight n. 303. 



12. Platygrapha Shirleyana Müll. Arg. ; thallus subflavescenti- 

 pallidus, tenuis, continuus et laevigatus ; gonidiorum articuli ellipsoidei ; 

 apothecia lirellaria, 7* -17* mm. longa, 30-35/100 mm. lata, simplicia 

 et bifurcata, varie curvata, demum emersa, valide thallino-corticata, 

 laevia ; labia arcte conniventia, margo interior tarnen anguste perspi- 

 cuus, demum hinc inde modice hiantia et discus angustus, cinereo- 

 pruinosus; perithecium nigrum laterale (ut in Graphide scripta), sub 

 hypothecio modice obfuscatum deficiens ; paraphyses intricatim con- 

 nexe; asci 8-spori ; spora3 28-33 [jl longae, 4 72-5 ^ latae (halone non 

 computato), digitiformes, 6-8-loculares. — Juxta P. flexuosam Müll. 

 Arg. locanda est, ubi apothecia intus undique hyalino-alba et lirellae 

 tenuiores et magis immersœ. — Corticola, Queensland : Shirley n. 1849. 



13. Platygrapha leptospora Müll. Arg.; Sticpnatidium narw- 

 carpum Kn. Contrib. Lieh. New South- Wales p. 42, sed nomen nanocar- 

 pum recusandum est et species ad genus Platygrapham pertinet. Planta 

 cseterum 1. c. bene descripta est, apothecia tarnen melius evoluta 

 22/100 mm. diametro attingunt, et sporae demum evolutae, valde tenellaB, 

 25-32 [j. longa?, 2-2 7* 1^ latae, bene 3-scptatae s. 4-loculares observantur. 

 Lichen extus formam exiguam P. ocellatœ Nyl. refert, sed sporae sunt 

 longiores et multo tenuiores, bacillares. — Corticola, New South- Wales : 

 I)' Ch. Knight n. 44. 



