Pyrenomycetfie, Dothideacea', Microcyclus. 431 



— Stromatibus pulvinatis in ostiolo Massarice parasiticis, vix 1 mm. 

 latis, nigris. subcorneis, intus minute pluri-locellatis, loculis exci- 

 pulo proprio carentibus, 80 a. diam., pallidis; ascis oblongo-cylin- 

 draceis, facile diffluentibus, paraphysibus filiformibus fuscellis co- 

 piose obvallatis; sporidiis fusoideo-oblongis, utrinque obtuse te- 

 nuatis 12-16 * 6-7,5, rectis, 1-septatis, non constrictis, hyalinis, 

 farctis. 



Ilab. in ostiolis Massariic Curreyiad ramos Tilite in vi- 

 ridario publico, Parma Ital. bor. (Passerini). — Species inter Do- 

 thideaceas eximia et vere peculiaris ob parasitismum in Pyreno- 

 mycetis. Status pycnidicus est Placosphceria Massarice, quam cfr. 



6. Plowrightia luxurians Rehm in Theissen Beih. Bot. Centralbl Bd. 4797 

 XXVII ;l910j Abt. II, p. 392. — Stromatibus crasse pulvinatis 



V. subglobosis, 6-20 mm. diam.. intus lignosis, extus atris, papillis 

 obtuse conoideis, asperrimis; peritheciis in strato peripherico poly- 

 stichis, immersis; ascis cylindraceis, breviter stipitatis, p. sp. 110- 

 130 « 10-12 ; sporidiis ellipsoideis, hyahnis, rotundatis, 18-24 * 8-10, 

 primo diuque continuis, demum 1-septatis. 



Hab. ad ramos, Rio Grande do Sul BrasiliiB. 



7. Plowrightia Hieronymi iSpeg.) Spegazz., Fungi Paulist Rev. Mus. 4798 

 La Plata t. XV, pag. 27. — Ita vocanda Dothidella Hieronymi 

 Spegazz. — SylJ. II, p. 627 — ex ipso auctore. 



MICROCYCLUS Sacc. — Syll. XVII, p. 844. — Pro Microcyclo scu- 

 tula (B. et C.) Sacc. et Syd., prof. v. Hohnel novum genus con- 

 didit nomine Coccoidella, cum gen. Microcijlus Sacc. ex parte cum 

 Polystomella Speg. collidat; rectius tamen servandum est nomen 

 Microcyclus, addita nota: char. emend. 



1, Microcyclus Derridis P. Henn., Fl. du Bas- et Moy.-Congo, Ann. 4799 

 Mus. du Congo, v. II, fasc. II (1907) p. 99. — Maculis flavidulis; 

 stromatibus superficiaHbus amphigenis plerumque epiphyllis gre- 

 gariis v. sparsis et nervos sequentibus, disciformibus, atris opacis, 

 rugulosis, c. 0,2-0,3 mm. diam. ; locuHs immersis paucis; ascis cla- 

 vatis, obtusis, 8-sporis, 30-55 » 14, paraphysatis ; sporidiis subdi- 

 stichis oblongis v. subclavatis, hyalinis, medio 1-septatis haud con- 

 strictis, 10-15 * 4-5. 



Hab. in foHis Derridis, Dembo Congo, Africse trop. 



2. Microcyclus Koordersii P. Henn., in Koorders, Botan. Untersuch. 4800 

 (1907) p. 183, fig. 15(1-6) et in Rehm Ascomyc. exsicc. n. 1615. 



— Stromatibus superficialibus hypophyllis, gregarie sparsis, inter- 



