T h e i s s e n , Fungi riograndenses. 411 



Lembosia microtheca Theiss. n. sp. 



^Maculae epiphyllae vix perspkuae, lenissime fuliginascentes, 

 minutae, 2 — 4 mm diam., indeterminatae. Mycelium vix sub 

 lente visibile, ex hyphis sparsis, laxe opposito-ramosis, laete 

 fuligineis, 2^2 ß crassis compositum. Hyphopodia rara, alterna, 

 ramuliformia, astipitata, recta, cylindrica, 5 — 8 = 2 /«. Perithecia 

 densiusciile aggregata, aterrima, linearia, recta vel curvula, dimi- 

 diato-convexa, contextu brunneo subconcentrice radiante, rima 

 tenuissima dehiscentia, longitudine varia, 180 — 300 = 70 — 90 p.. 

 Asci oblongo-elliptici, 25 — 30 = 9 — 11 u, interdum deorsum 

 pauUo angustati et proinde subclavati, 8-spori, sporidia demum 

 brmmea, disticha, oblonga, 9 — 10 = 2V2 — 3 jx, loculo infero 

 paullo angustiore et longiore. Paraphyses copiosae simplices 

 filiformes flexuosae, ascos obvallantes. 



In foliis Goeppertiae hirsutae, Sao Leopoldo, Rio Grande 

 do Sul. 



