150 A. Zaiilbruckxek : Lichenes. 



) Planta aquatica; thalliis fere spongiosus, 



crassiusculus 8. ampkibola. 



) ) Planta non aquatica, thallus tartareus, tenuis 



11. gibbosa. 

 -\--{- Sporae in ascis bi- vel triseriales, oblongae, ellip- 

 soideae vel ovales. 

 V Discus pruinosus. 



) Apothecia habitii lecideina ; medulla J coerulea 



17. tesselans. 

 ) ) Apothecia lecanorina : mednlla J non reagens 



4. Hoffmannii. 

 V V Discus non pruinosus. 



) Sporae minores, late ovales, 14 — 17 X 12 — 14^« 



19. dsckungdienensis. 

 ) ) Sporae maj eres et angustiores, 20 — 28 X 8 — 14^. 

 — Thallus lacteo-albidus ; medulla alba 



18. galactotera. 



.--^ -^ Thallus cinereus vel cinerascens: medulla 



isabellino-subochracea 16. disculifera. 



1. L. cupreoatra Nyl. (Cat. Lieh., V, 301). Schenhsi: Talkschieferfelsen 

 bei Indjiapu (Giraldi nach Jatta I, 476). 



2. ** L. anamyloidea A. Zahlbr. 



Thallus epilitliicus, crustaceus, uniformis, sat late expansus, tenuis, 0,1 usque 

 0,2 mm crassus, substrato adhaerens, subtartareus, ochraceo-cervinus vel cervinus, 

 ad marginem irregulariter et anguste albidus, opacus, KHO — , CaCl2 02 — '> 

 KHO + CaClgOa — , areolatus, areolis parvis, 0,2 — 0,6 mm latis, angulosis, 

 fissuris tenuissimis separatis, concaviusculis planisve, tenuissime albido-limitatis, 

 continuis, sorediis et isidiis destitutus: gonidia cystococcoidea, plus minus globosa, 

 rare ovali-ellipsoidea et usque 18 /t longa: medulla alba, J — . 



Apothecia immersa vel demum adpressa, parva, usque 0,6 mm lata, rotunda 

 vel plus minus angulosa, rarius oblongata, in areolis singula, lecanorina, sicca 

 atra, raadefacta f uscescentia : margo thaUinus tenuis, albescens, integer, pro- 

 minulus et persistens, strato corticali ad ambitum obscurato et pulverulento, 

 ex hyphis intricatis formato, medullam et gonidia includente obductus : excipulum 

 parum distinctum: hymenium superne latiuscule umbrino-fuscescens, pulveru- 

 lentum, KHO—, XO5 — , caeterum decolor, purum, pellucidum, usque 300« 

 altum, J e coerulescentia praecedente cupreo-rufescens ; hypothecium angustum, 

 decolor; paraphyses capillari-filiformes, strictae, simplices vel increbre ramosae, 

 eseptatae, ad apicem haud latiores, contextae; asci ampli, ovali-clavati, superne 

 rotundati et membrana bene incrassata cincti, Sspori; sporae biseriales, decolores, 

 simplices, late ovales vel late ellipsoideae, utrinque bene rotimdatae, rarius 

 subglobosae vel difformes, rectae, membrana tenui cinctae, contentu aequaliter 

 oleoso, 28 — 36^« longae et 18 — 21 /t latae. 



Conceptacula pycnoconidiorum immersa et vertice minuto, nigro, convexo 

 emergentia: perifulcrium superne obscuratum, caeterum pallidum; fvilcra exo- 

 basidiaUa: basidia densa, subfiliforraia, pycnoconidiis longiora, ad 30// longa; 



