126 A. Zahlbruckner: Lichenes. 



halone non praeditae, rectae vel curvulae, triseptatae et in cellulis paucis septo 

 unico verticali et dein depauperato-murales, septo et membrana tenuibus, ad septa 

 non constrictae, 17 — 19^ longae et 7// latae. 



S.: Mergel an Steppenhängen der str. St. ober Gaoyao am See von Ningyüen 

 (Lingyüen), 1700 m, 14. IV. 1914 (1379). 

 7.** Rh. gracile A. Zahlbb. 



Thallus epilithicns, crustaceus, nniformis, piagas rotundatas, confluentes 

 et substrato adhaerentes formans, tenuis, ad 0,2 mm crassus, fuscescenti-cineras- 

 cens, opacus, KHO — , G&Cl^O^, — , verriiculosus vel verruculoso-areolatus, 

 verruculis minutis, ad 0,2 mm latis, continuis et fissuris tenuibus separatis vel 

 versus ambitum thalli dispersis, hypothallo lato nigrescente superpositis, sorediis 

 et isidiis nullis; gonidia cystococcoidea ; meduUa alba, J — . 



Apothecia lecideina, nigra, opaca vel demum detrita nitidula, sessilia, dis- 

 persa vel approximata, usque 0,8 mm lata, rotunda, e piano modice convexa; 

 margo tenuis, integer, prominulus, demum depressus; excipulum integrum, fu- 

 ligineum, inferne percrassum, versus hymenium obscure rufo-fuscum; hymenium 

 superne fusco-nigrum, haud pulverulentum, KHO — , NO5 — , caeterum decolor 

 et spumulosum, J coeruleum ; paraphyses strictulae, filiformes, parce ramosae, 

 eseptatae, gelatinöse conglutinatae, non capitatae; asci ellipsoideo- vel ovali- 

 clavati, superne rotundati et membrana incrassata cincti, Sspori; sporae in 

 ascis biseriales, decolores et demum pallide fuscescentes, late ellipsoideo- ovales 

 vel ovales, utrinque late rotundatae, rectae, murales, septis horizontalibus nor- 

 raaliter 7, septis verticalibus 1 — 2, septis tenuibus, in medio passim leviter con- 

 strictae, 28 — 34 fj, longae et 12 — 15 ^ latae. 



Y. : Sandsteine in der wtp. St. bei Hsinlung jenseits des Pudu-ho n von 

 Yünnanfu, 25" 34', 2000 m, 10. III. 1914 (1387). 

 Accedit ad Rh. obscuratum (Ach.) Mass. 



** var. sanguineum A. Zahlbr. 



A typo differt thallo KHO sanguineo et sporis parum majoribus, 39 — 42 /^ 

 longis et 15 — \& fx latis. 



S. : Eisenschüssiger Sandstein in der tp, St. um den Paß Dsiüba im Daliang- 

 schan e von Ningyüen, ± 3000 m, 26. IV. 1914 (1765). 

 8. **Rh, ischnothallum A. Zahler. 



Thallus epilithicus, crustaceus, uniformis, maculas mediocres (in specimi- 

 nibus visis usque 3 cm latas) formans, substrato adhaerens, tenuis, 0,1 — 0,2 mm 

 crassus, subtartareus, oehraceus, opacus, KHO flavens, CaClgOa — , in centro 

 continuus, tenuissime et minute areolato-fissus, areolis ad 0,2 mm latis, angulosis, 

 planatis, verucis albidis, semiglobosis, dispersis, minutis, ad 0,1 mm latis obsitus, 

 sorediis et isidiis destitutus; gonidia cystococcoidea, globosa, 9 — 12^ lata; 

 medulla alba, J — . 



Apothecia lecideina, nigra, opaca vel demum nitidula, dispersa vel approxi- 

 mata, rotunda, usque 1 mm lata, vulgo paululum minora, primum concaviuscula, 

 margine prominulo, integro, nigro cincta, demum convexa, margine depresso; 

 excipulum integrum, fuligineum, ad latera hymenii angustum, inferne crassum; 

 hymenium superne ohvaceo-nigrescens, pulverulentum, NO5 — , KHO — , caeterum 

 fere decolor, purum, 120— 140 // altum, passim striis olivaceo-fuscescentibus 

 percursum, J obscurato-coeruleum ; hypothecium angustum, decolor; paraphyses 



