28 MALME, FLECHTEN DER ERSTEN REGNELLSCHEN EXPEDITION. II. 



gerrimo, thallo concolore v. raro demum ± obscurascente, 

 persistente. Hypothecium pallidum; thecium superne fusci- 

 dulum, KOH immutatum. Sporae in ascis clavatis 8:n8e, dy- 

 blastse, ellipsoidese v. ellipsoideo-oblongse, medio vulgo non 

 constrictpe, (18— )20— 25(— 28 a longtB, (9— )10— 11(— 12) .it 

 crassse, episporio subsequaliter v. injequaliter incrassato. 



Criista KOH lutescens; gonidia subglobosa, 8 — 10 f-t crassa; 

 bj-pliEe medullares J non reagentes. Pars mar^inalis excipuli 

 tennis, gonidia sat nnmerosa fovens; strato corticali tenni; 

 margine proprio vulgo bene evoluto, marginem thallodem 

 demum seepe excludente. Thecium 90 — 100 /.i altum, J. per- 

 sistenter coerulescens; paraphyses graciles, circiter 1,26 f.i 

 crassse, sat arcte coheerentes, superne nonnihil ramosee, api- 

 cibus clavato-incrassatcie et usque ad 3 f.i crassae. Sporae nt- 

 roque apice obtusse v. obtusissimse, mox obscuratse, septo pri- 

 mario conspicuo, episporio valde incrassato, aut subsequaliter, 

 aut preesertim apicibus et ad septum. 



Ha])itat ad corticem arborum nec non ad lapides saxaqne 

 prcesertim subumbrosa. 



Specimina reportaviraus e Minas Geraes: Säo Joäo del Rey 

 (saxicola. 18 30/8 92. N:o 245. — 18 79^2. N:o 333.); Måtto 

 Grosso: Santo Antonio, Morro Grande (18 -0/12 93. N:o 2136, 

 saxicola.) et Morrinho (18 -^'4 94. N:o 2607 B, saxiola.), Serra 

 da Chapada, Buriti (18 ^^/i 94. N:o 2272.) et Santa Anna da 

 Chapada (18 28/2 94. X:o 2446.). 



Species affines a R. lepida differunt: Lecanora tJiiomela Nyl. (Flora 

 1865, p. 338.) crusta iiielius evoluta, margine thallino crasso et sporis majoribus, 

 23 — 30 u loiigis, 11 — 15 « crassis; Lecanora xanthojphcea Nyl. [Lich. Jap. 

 (1890), p. 41] crusta disperse areolata v. squaniulosa, apotheciis Itetius colo- 

 ratis, margine thallino crasso, sporis minoribus. 17 — 24 // longis, 7 — 11 u 

 crassis, episporio valde insequaliter incrassato [fere ut in JR. Icevigata (Ach.) 

 Malme et i?, exigua (Ach.) Arn.], ad R. chrysomelcenam (Ach.) Tuck. accedit. 



(1. R. dolicliospora Malme n. sp. 



Thallus crustaceus, effusus, tennis, rimoso-areolatus v. praj- 

 sertim marginem versus disperse areolatus v. minute squa- 

 mnlosus, areolis (s. sqnamulis) ssepe crennlatis, rarius tenuis- 

 simns subcontinuusque, sublcevigatus v. granulatus v. crebre 

 brevissimeque isidiosus, cinereus, alutaceus v. brunneolo-cine- 



