3 8o 



A. ZAHLBRUCKNER 



usque ad verticem hymenii assurgens, subdecolor et fere pellucidum, ex hyphis 

 tangentialibus, tenuissimis et leviter intncatis formatum, 30—35 u crassum, 

 I — ; hypothecium angustum, subdecolor (dilute lutescens), molle; hymenium 

 superne dilute umbrino fuscescens et inspersum, caeterum decolor et purum, 

 80 -go ;x altum, I e coeruleo aeruginoso-sordidescens (imprimis asci); parapliyses 

 filiformes, conglutinatae, simplices, eseptatae, ad apicem haud crassiores; asci 

 oblongo-clavati, ad apicem rotundati, hymenio subaequilongi, 8-spori; sporae 

 in ascis plus minus biseriales, decolores, simplices, ellipsoideae, membrana tenui 

 laevique cinctae, 8,6 — 10,5 |x longae et 3,5 - 4 \l latae. 



Conceptacula pycnoconidiorum semiemersa, vertice punctifotmi. nigro, a 

 thallo annulatim cincto, plus minus globosa; perimlctium in dimidio superiore 

 sordide fuscum; fulcra exobasidialia, pycnoconidiis paulum breviora; pycnoconidia 

 filiformia, utrinque retusa, curvata vel hamata, 15—18 [j. longa et vix I ja lata. 



Masatierra: Bahia del Padre, an Strandfelsen (C. unci I. SKOTTSBKRG). 



Masafuera: Quebrada de las Casas, auf Blocken (C. und I. Skottsberg). 



*L. albellina Mull. Arg. 



Mull. Arg. in Mission. Scient. Cap Horn, vol. V, 1889. p. 162. 



var. validior A. Zahlbr. nov. var. 



Apotheciis majoribus et margine thallino apotheciorum primum distincte 

 crenulato a typo differt. 



Apothecia sessilia, rotunda, primum distincte lecanorina, dein u«que 1.2 

 mm lata et margine depresso habitum biatorinum praebentia, leviter convexa; 

 discus fuscidulo-carneus vel alutaceus, non pruinosus; margo thallinus primum 

 bene prominulus, angustus, obtusiusculus, primum crenulatus, thallo concolor, 

 extus strato corticali obductus, medullam et gonidia includens; excipulum 

 integrum, ad latera hymenii crassius, decolor, ex hyphis tangentialibus et con- 

 glutinatis formatum; hypothecium crassiusculum, dilute lutescens, ex hyphis 

 intricatis formatum; hymenium superne rufescenti-fuscescens, non inspersum, 

 caeterum decolor et purum, aquoso pellucidum, 150 — 175 jx altum, I intense 

 coeruleum et demum sordide obscuratum; paraphyses filiformts, dense con- 

 glutinatae, simplices, eseptatae, ad apicem vix latiores; asci clavati, superne 

 rotundati et membrana incrassata cincti, 8 spori; sporae in ascis bi- vel 

 subuniseriales, decolores, simplices, late ellipsoideae vel ovales, membrana 

 tenui, sed bene distincta cinctae, 18-22 ;j. longae et 10— 13 ;j. latae. 



Masafuera: Quebrada del Blindado, 440 m, auf Dendroseris gigantca (C. 

 und I. Skottsberg). 



*L. dispersa (Pers.) Flk. 



Masatierra: Bahia del Padre, auf losem Tuff; Sudseite der Insel, Gipfel 

 des Cerro Negro, 190 m, auf vulkanischem Gestein (C. und I SKOTTSBERG). 



Masafuera: Strandfelsen, Quebrada de las Casas (C. und I Skottsberg). 



