16 ARKIV FÖR BOTANIK. BAND 2. N:0 5. 



obvoluta, primo fuligineo- hyalina, guttiilis 2 — 4 ornata, demum 

 coutinua, fusca, 80 — 38 x 7 — 7,5 jt/ (sine velo.) Parapliyses 

 filiformes, guttulatfe, hyalinte, raniosae, diffluentes, ascos supe- 

 rantes, numerosa^. Conidia non vidi, — Hab.: Paraguay, 

 San Tomas ad truncum dejectum putrescentem in silva. Vs 

 1892, N:o 429. — Perpulciira et distinetissima species e sec- 

 tione Eu-Rosselliniee, B. Des7najsierii affinis colore et fabrica 

 subiciili nec non peritheciis sporidiisqne plane diversa. Tunica 

 incrassata ascorum jodo intense ca^rulescit. 



R. pulveracea (Ehrh.) Fück. var. platysporella Speg. 



Perithecia 150 — 250 ^/; asci 75 — 90 x 8; sporidia 8,5 — 10 

 X 6 — 7,5 f.1. — Hab.: Paraguay, San Antonio, prope Asun- 

 •cion, 277 1893 (Lindman). — Modis et forma sporidiorum et 

 aliis notis specimina nostra ad var. platj-sporellam ducenda 

 erint, sed plane congruunt cum Rehm Ascom. 192. (Cfr 

 Winter, die Pilze II p. 228.) 



Didymella. 



D. elliptica Starb, nov. sp. Fig. 36 — 39. 



Perithecia sparsim gregaria, interdum 2 — 3 confluentia, 

 fibris ligni primum tecta, deinde erumpentia, elliptica vel 

 oblongata, utrinque obtusa, depressa, rarissime orbiculariter 

 lenticularia, rugosa, parietibus textura laxissime carbonacea 

 vel pulveracea, crassis, ad basin obsoletis, loculum unicum, 

 sphserioideum, matrice plane immersum, primo clausum, deinde 

 papillula, mox collapsa, demum ore latiusculo, lacerate aper- 

 tum includentibus, nigra, 400—500 x 150-200«. Asci cylin- 

 dracei, sursum rotundati, unifoveolati, deorsum pauUum latio- 

 res, vel cylindraceo-clavati, breviter pedicellati, 56 — 75 x 

 9 — 11 ,«. Sporidia octona, monosticba, plerumque inferiora 

 arete subdisticha, elongato-ellipsoidea vel fere clavulata, ut- 

 rinque obtusiuscula, prope medium vel medio-septata, bj'a- 

 lina, 12 — 15 x 5 — 6,5 //. Paraphyses numerosissimee, filiformes, 

 eleganter liexuosse, irregulariter ramulosee, hyalinse, ascos 

 obvallantes, 1 f.i latte. J-. — Hab.: Brasil., Måtto G-rosso, Co- 

 rumbä ad truncum siccum in silva, -V'? 1894. — Stroma 

 matrice mutata est formatum, quse mycelio nigro, fibrillos ligni 



