Beitrage zur Pilzflora der Niederlande 1 1 



Von C. A, J. A. Oudcmans. 



Neue Pilze. 



Tremellaceen. 



1. Ditiola Fagi Oud. n. sp. — Auf modcrndem Buchcnholz. 

 Nunspeet, 16. Mai 1898. — Beins. — Gregaria, stipitata vel sessilis, 

 stipite crasso, albo, 1 — 2 mill, alto, maculae albae orbiculari, fibrillosae 

 insidente; cupula plana vel convexa, nunc regular!, tunc vero varie con- 

 torta, margine saepe revoluto, centro depressa, aurantiaca vel aurea, 

 humcctata gelatinosa, tandem deliquescente; sporis subellipsoideis 

 vel oblongis , curvuHs et inaequilateralibus , constantcr 3 - scptatis 

 (4-locularibus), in basidiorum ramis furcatis terminalibus, 11 — 14 



X4-^/o-5V2. 



Differt a Z?. radicata sporis constanter 4-locularibus, et a Z>. con- 

 fornii sporarum dimcnsionibus reductis. 



Sphaeriaceen. 



2. Hypospila Pus tula Karst, Forma Quercus rahrae, Ab 

 omni parte formae typicae simillima, sed sporae constanter paullo 

 majores (23 X 4%.) 



Sphaeropsideen. 



3. Phyllosticta persicicola Oud. n. sp. — Auf Blattern von 

 Per ska vulgaris , iind zwar auf den blasig aufgctriebenen Stellen, 

 durch die Infection mit Exoascus deformans verursacht. — Apeldoorn, 

 1. Juni 1898. — O. 



Alaculis vulgo orbicularibus, 3—7 mill, in diametro mctientibus, 

 primitus roseo-, postremo saturate-fuscis, quandoque concentrice sub- 

 zonatis, circulo prominentc limitatis, ultra hujus limites area fusca 

 difformi, satis expansa, cinctis; peritheciis p. m. numerosis , usque 

 ad 30, immersis, laxiuscule cellulosis, dilute coloratis, ostiolo centrali 

 ample hiantibus, sporulas in cirrhum globulosum, primo albissimum, 

 postea dilutissime griseum condensatas , protrudentibus ; sporulis 

 hyalinis, rectis, ellipticis vel oblongis, 7 — 12 X 3V^2 — ^%^ absque 

 guttularum vestigio durante tota vita, 



Non raro Marsonia obscura Romell (Sacc. Syll. X, 478) comi- 

 tante. , ^ . 



