BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 28. AFD. III. N:0 1. 35 



Arcte affinis M. intruscB (Kremp. & Ntl.) Malme, abs qua crasta minus 

 evoluta, apotlieciis magis adpressis, vulgo minoribas et prsesertim thecio minus 

 alto sporisque minor ibus recedit; formas intermedias non vidimus. 



Hujus varietas esse videtur R. äiffracta Mull. Arg. (Lich. Sebastian. 

 p. 356.). 



11. R. dispersa Malme n. sp. 



Tliallus crustaceus, sat tennis, ex areolis v. squamulis 

 depressis, sat parvis, margine vulgo crenulatis, dispersis v. 

 rarius ± confluentibus constructns, albidus v. glancescens, 

 ssepe nonnihil farinulentus, hypothallo atro, conspicuo. Apo- 

 tliecia ± conferta, adpressa v. rarius adnata, sat parva, 0,3 — 

 0,6 mm. lata; disco atro v. nigricante, opaco, persistenter 

 plane, rarius demum convexulo; margine tenui, thallo con- 

 colore integerrimo v. subintegerrimo, persistente. Hypothe- 

 cium pallidum; thecium superne fuligineum, KOH immuta- 

 tum. Spor» in ascis clavatis 8:n8e, dyblastse, ovoidese v. late 

 ellipsoidese, medio non constrictee, (11 — )13 — 16( — 18) (.i longse, 

 (5 — )6 — 7( — 8) a crassse episporio valde et sat sequaliter in- 

 crassato. 



Crusta KOH immutata; stratum corticale bene evolutum, 

 ex hyphis subverticalibus, sat leptodermaticis, crebre septatis, 

 arcte conglutinatis formatum. parenchymaticum, cellulis cir- 

 citer 7 ^it longis, 5 jit crassis, superne sensim decedentibus 

 (unde crustse superficies farinulenta) ; hyphee medullares J 

 non reagentes; gonidia subglobosa, 8 — 11 i.i crassa. 



Pars marginalis excipuli sat crassa, gonidia numerosa — nu- 

 merosissima fovens; strato corticali inferne crasso, superne + 

 attenuato, J non reagente; margine proprio baud multum 

 evoluto v. subnullo. Thecium 70 — 90 f.i altum, J persistenter 

 coerulescens; paraphyses sat graciles, circiter 1,5 ,t< crassse, 

 arcte cohserentes, superne vulgo nonnihil ramosse, apicibus 

 sensim clavato-incrassatse, usque ad 3 ,1* crassee. Sporae ut- 

 roque apice obtusissimEe v. rotundatee, sat cito fuscescentes, 

 septo primario distincto, loculis subglobosis v. ovoideis, di- 

 stantibus et tubulo conjunctis v. ± approximatis. 



Habitat ad corticem arborum, in silva minus densa re- 

 gionis calcarccE. 



