DR. J. MULLER — LICHE.VES MANIPCREXSES. 223 



* 



* 



Miill. Arg., referens, ubi autern sporae crassiores et multo magis 

 divisae sunt. 



63. Patellars (§ Bacidia) rttfescens, Mull. Arg. in Flora, 

 1884, p. 467 ; parce lecta. 



« 64. P. (§ Bacidia) luteola, Mull. Arg. in Flora, 1885, p. 532. 



65. Heterothecitjm: yulpinum:, Tuck. Licit. Calif, p. 31, 

 in not. 



66. Buellia parasem:a, v. disciformis, Th.M. Fries, Scand. 

 p. 590 ; corticola. 



67. B. STELLULATA, JlTudd, JSIan. p. 216; saxicola in eaver- 

 nosis montium supra Manipur. 



Trib. Graphide^:. 



■ 



68. Dirina btssiseda, Mull. Arg. ; thallus e virente v. fla- 

 vescente albus, tenuis, ecorticatus, superficie hyphis subtiliter 

 tomentosus, margine zona fusco-nigricante byssina cinctus; 

 gonidia chroolepoidea, articuli 6—8 ^x lati ; apothecia |-1 mm. 

 lata, laxe sessilia, basi coarctata, lecanorina et plana, ambitu 

 regulariter orbicularia, baud undulata ; margo tballinus obsolete 

 tomentellus, junior discum obtegens, demum superficie firmus ; 

 discus fusco-niger et nudus ; margo proprius interior occlusus, 

 apicem laminae baud attingens ; epithecium rufo-nigricans ; lamina 

 byalina ; hypothecium nigrum valde incrassatum ; parapbyses 

 haud convexae, simplices aut bifurcatae, superne fusco-nigri- 

 cantes ; sporae (juniores tantum visaej 25 /i longae, subrectae, 

 tenuiter bacillares, 4-loculares. — Habitu ad Platygrapham dila- 

 tatam, Nyl.,accedit, at apothecia omnino regularia et paraphyses 

 non mtncato-eonnexae. 



69. Platygrapha gregantula, Mull. Arg. ; thallus argillaceo- 



albidus, tenuissimus, laevis, subfarinulentus ; apothecia J-J mm. 



lata, adpresso-sessilia, orbicularia v. obsolete obtuse angulosa, 

 margine tballino prominente obsolete crenulato et iuteriore 

 nigro tenui et emergente praedita ; discus planus, caesio-niger ; 

 epithecium et hypothecium angustam nigro-f usca ; sporae in ascis 

 8nae, hyalinae, (6-)8-loculares, 45-50 p longae et 5-6 p latae, 

 utrinque acute acuminata^, sigmoideo-curvatse. — Est habitu et 

 characteribus proxima PI. byssiseda, Mull. Arg. Graphid. Feean. 

 p. 15, et PI. lecanoroidi, Nyl. Lich. exot. Peruv. p. 229, et 



