3 6 ° 



A. ZAHLBRUCKNER 



Apothecia lecideina, sessilia, dispersa vel approximata, rotunda, atra, 

 opaca, usque 1,5 mm lata, e concaviusculo demum convexula vel inaequalia, 

 margo proprius crassus, integer, prominulus, demum depressus; excipulum 

 integrum, in feme (sub hymenio) fere decolor, ex hyphis tangentialibus for- 

 matum, in parte marginali crassum, extus anguste nigricans, intus decolor, ex 

 hyphis radiantibus, dense contextis, non septatis formatum; hypothecium an- 

 gustum, decolor; hymenium superne obscure olivaceum, KHO — , NO s — , 

 caeterum decolor et purum; paraphyses filiformes. strictae, simplices, eseptatae, 

 ad apicem vix latiores, dense contextae, in KHO autem facile liberae; asci 

 hymenio paulum breviores, oblongo-clavati, ad apicem rotundati et membrana 

 primum bene incrassata cincti, 8 :-pori; sporae in ascis subbiseriales, decolores, 

 simplices, ellipsoideae vel ovali-ellipsoideae, membrana tenui cinctae, rectae, 

 12 — 14.5 \x longae et 5-5-5 [>< latae. 



Masatierra: an Felsen im obersten Teile des Villagratales (C. und I. 

 Skottsberg). 



* L. leucozonata A. Zahlbr. nov. spec. 



Thallus epilithicus, crustaceus, uniformis, tenuis, tartareus, cinereus, opacus, 

 KHO — , Ca C1 2 2 — , areolatus, areolis confertis, versus ambitum thalli tantum 

 plus minus dispersis, angulosis, 0,5—1 mm latis, fissuris tenuibus limitatis, planis 

 vel planiusculis, sorediis et isidiis nullis, hypothallus distinctus non evolutus; 

 medulla alba, KHO — , Ca C1 2 2 — , hyphis non amyloideis. 



Apothecia lecideina, sessilia, rotunda, usque 1,5 mm lata, dispersa vel 

 approximata; discus niger, fere opacus, epruinosus, e concaviusculo planus, 

 demum convexiusculus vel leviter gibbosus; margo primum leviter prominulus, 

 integer, tenuis, albus, demum obscuratus et depressus; excipulum dimidiatum, 

 crassiusculum, extus fusconigrum, intus pallidum, cinereum vel cinereo-fuscescens; 

 hypothecium angustum, pallide lutescens, molle, ex hyphis intricatis, non 

 inspersis formatum; hymenium superne umbrino nigricans, KHO — , NO s — , 

 non in-^persum, caeterum fere decolor et in parte inferiore pallide aeruginoso- 

 coerulescens, 60 — 80 »j. altum, I intense coeruleum; paraphyses filiformes, 

 strictae, simplices, eseptatae, ad apicem clavatae et obscuratae, conglutinatae; 

 asci oblongo-clavati, hymenio subaequilongi, 8-spori; sporae in ascis biseriales, 

 decolores, simplices, late ellipsoideae vel ovales, rectae, membrana tenui cinctae, 

 minutae, 8.5 — 11 ;x longae et 4 — 6 a latae. 



Pycnoconidia non visa. 



Masafuera: Cerro Correspondencia, bei 1,400 m, auf vulkanischem Ge- 

 stein (C. und I. SKOTTSBERG). 



* L. enteroleuca Nyl. 



Nyl. in Flora, vol. LXIV, 1881, p. 187; Arn. in Flora, vol. LXVII, 1884, p. 

 558 et Zur Lich., Flora Miinchen in Bericht Bayr. Bot. Gesellsch., vol. I, Anhang, 

 1891, p. 80. — Hepp, Flecht. Europ., no. 129. 



Masatierra: Pangal, auf Strandfelsen, und Steilwand unweit des Porte- 

 zuelopasses, 600 m (C. und I. SKOTTSBERG). 



