J040 Hjrphomycetje. Mucedinaceee, AmerospoMB, Polyscytalum. 



12. Oospora Rivalts Sacc. et Syd. Sic dicenda est Oospora incequalis 

 (Riv.) Sacc. in Syll. X, p. 513, qimm exstet anterior Onspora ime- 

 qualia (Cda.) Saoc. et Vogl. in Syll. IV, p. 15. 



F08IDIUM Link — Syll. IV, p. 26, X, p. 515, XI, p. 589. 



1. Fcsidium violacouin Pat. Bull. Soc. Myc. de Fr. 1895, p. 234.— 4124 

 Caespitulis hypophyllis, punctiformibus, subglobosis, coniluentibus, 

 violaceis, maculas eflftisas, 4-15 mm. latas formantibus; conidiia 

 cylindraceis, utrinque acutis, hyalinis, continuis v. medio 1-septatis, 

 30-40 ^ 1-2. 



Hab. \n foliis Rubiaceje cujusdam in ^^uatoria (Lagerheim). 



2. Fusldlum Welampyri E. Kostr. Bot. Tidsskr. 1897, p. 49. — Al- «25 

 bidum, tenuiter eSfusum, hypophyllum; conidiis cylindrico-fusoi- 

 deis, hyftlinis, 13-18 «3-5. 



Hab. in foHis Melampyri silvatici in Danis. 



3. Fusidiuni Feronospor« Fautr. et Lamb. Bev. Mycol. 1896, p. 69. **126 

 — Hyphis brevissimis, hyalinis, hypo-vel epiphyllis, cum eis PZa«- 

 moparde ViHs mixtis; conidiis solitariis v. binis trinis consociatis, 

 ovalibus, oblongis, attenuatis, fusiformibus, hyalinis, simplicibus, 

 6-13 «3-4. " • 



Hah. in foliis vivis Vitis viniferse a Plaamopara Vitis per- 

 vasis in Gallia. 



POLYSCYTALUM Riess — Syil. IV, p. 38, X, p. 519. 



1. Polyscytalum Saccardianum Brizi, sp. nov. in Htt. — Mycelio in- 4127 

 tra baceas effuso, ramoso, filifornii, dein per epidermidem erum- 

 pento et csespitulos "albos. pulveraceo-velutinos formante; hyphis 

 fertihbus adscendentibus, totis hyalinis, filiformibus, 2-3-furcatis, 



in catenulas longas conidiorum abeuntibus; conidiis cylindricis 

 utrinque truncatis, 6-12 v3-6, hyalinis, eguttulatis. 



Hdb. in baccis fermentescentibus Lycoperaici escuJenti 

 RomsB, Nov. 1897. 



2. Poiyscytalum ? Sacchari Speg. Rev. Agr. y Veter. La Piata 1896, 4128 

 q. 243. — Effusum, superficiale, arachnoideum, candidum ; hyphis 

 sterilibus repentibus laxe intricato-ramulosi)?, septulatis hyalinis, 

 6-8 \). diam.; ramis fertiUbus hinc inde adsurgentibus erectis, re- 

 ctis simphcibus plus minusve elongatis, 40-250 v 4-12, basi non v. 

 vix subincrassatis continuis v. septuiatis, sursum attenuatis api- 

 ceque conidiiferis ; conidiis cyhndraceis v. fusoideis, utrinque at- 



