BIHANÖ TILL K. SV. VET.-AKAD. HANDL. BAND 28. AFD. III. N:0 1. 43 



15 R. deminuta Malme n. sp. 



Thallus crustaceus, effusus, tennis, rimoso-areolatus, areolis 

 planis, fere Isevigatns, albiclo-cinereus, cinereus v. fuscidulo- 

 cinereus, hypothallo indistincto (subconcolore). Apothecia sat 

 conferta, adpressa v. ssepe subinnata, parva, 0,2 — 0,4 mm. lata; 

 disco atro, rarius atrosanguineo v. rufescenti-atro, opaco, pri- 

 mum concavo, dein persistenter piano; margine tenui, primum 

 saepe thallo concolore, dein obscurascente atroque, persistente. 

 Hypothecium pallidnm; thecium superne fuscescens, KOH im- 

 mutatum. Sporae in ascis inflato-clavatis 8mpe, dyblastse, ovoi- 

 dese v. ovoideo-ellipsoidese v. late ovoideo-oblongse, medio non 

 constrictce, (15— )16— 18(— 20) ^^ longse, (7— )8— 9(— 10) jtt 

 crassse, episporio valde et inaequaliter incrassato (mischobla- 

 stiomorphEe). 



Crusta KOH immutata; hyphse mednllares J non reagen- 

 tes; gonidia siibglobosa, 10 — 17 /.t crassa. Pars marginalis ex- 

 cipuli tennis, in parte inferiore vulgo gonidia nonnulla lovens, 

 superne p. p. maxima fuscescens, .1 non reagens; margine 

 proprio subnullo. Thecium circiter 80 ii altum, J persistenter 

 coerulescens ; paraphyses sat graciles, circiter 1,5 fi crassa, sat 

 facile liberse, simplices v. rarius superne nonnibil ramosae, 

 apice clavatse, clava 4 — 5 ,t< crassöe, superne fuscse. Sporse ut- 

 roque apice obtusissimse v. rotundatse, diutissime subhyalinse, 

 septo primario sat indistincto. 



Habitat ad lapides saxaque arenaria, basaltica etc, prse- 

 sertim in subumbrosis. 



Specimina reportavimus e Rio Orande do Siil: Santo An- 

 gelo pr. Cachoeira (18ii'i93. N:o 889 D. — 18 V2 93. N:o 

 996 et 996 B. — 18 8/2 93. N:o 1036 et 1038 B.), excol. SU- 

 veiro Martins pr. Santa Maria (18 0, 3 93. N:o 1148. — 18 ^^,3 93. 

 N:o 1179.); Måtto Grosso: Cuyabå (18 i*^, 12 93. N:o 2114.), Santo 

 Antonio, Morro Grande (18 ^o 12 93. N:o 2141.). 



Arcte affinis R. conspersce Mull. Arg., abs qua prsesertim apotheciis 

 sporisque minoribus recedit; formas intermedias tamen nondum vidimus. 



