II 



396 Pliycomyeetie, Peronosporacefe, Phytophthora. 



valde proximum, nisi icleuticum; oogouiis terminalibus, globosis,; 

 minuscalis, 12 fx. diam., membrana tenui, levi, hyalina, simplicl 

 praeditis; oosporis globosis, 8-9 ^. diam., hyalinis, 1-guttatis; an- 

 theridiis clavatis, terminalibus, plerumque singulis suo unoquoqne 

 oogonio, raro binis. iH 



Hab. in filamentis vetustis subemortuis Yaucheriae sessilis ' 

 in Rossia. 



Fam. 7. Peronosporac3se De Bary. 



CYSTOPUS Lev. — Sacc. Syll. VII p. 233, IX p. 340, XI p. 242, 

 MV p. 458. 



1. Cystopus candidus (Pers.) Lev. — Syll. VII, p. 334. — f. Helio- 

 philae P. Henn. Hedw. 1898, p. 293. — Differt conidiis globosis, 

 hyaiinis, levibus, ca. 16-21 fz. diam. 



riab. in foliis Heliophilse Meyeri in Africa austraU 

 (Schlechter). 



2. Cystopus Salsoiae Syd. Hedw. 1899, p. (142). — Soris erampen- 

 tibus, albis, '/^-'/, mm, diam., foliicolis vel cauiicolis; conidiis glo- 

 bosis, tenue tuuicatis, liavescentibus, 18-27 ,u. diara.; oosporis atro- 

 brunneis, globosis, verrucis crassis obtusis obsitis, 12-15 a. diam. 



Hab. in foliis caulibusque SalsolaB incanescentis, prov. 

 Kerman Persite austr, (Bornmuller). — Species perpulcra oospo- 

 ris minutissimis facile dignoscitur. 



3. Cystopus Schlechteri Syd. Hedw. 1899, p. (142). — Soris ?bbc 

 sis>, minutis, '4-'/, mm. diam., candidis; conidiis globosis 21-24 fiJ 

 diam. vel ovato-globosis 27-30 * 21-24 p., levibus, membrana cir«| 

 oumcirca flequali, luteo-brunneola; oosporis globosis, 18-24 a. diam., 

 fxosporio verrucis crassis 4-5 fx. longis obsito, atro-brunneis. 



Hab. in foHis Oiaoxyli Salsolae in Africa austrah regio- 

 nis orientaHs (Schlechter). 



PHYTOPHTHORA De Bary — Syll. VII p. 237, IX p. 341. 



i. Phytophthora Colocasiae Rac. Parasit. Algeu n, Pilze Javas, I, p. 9 

 (1900). — Hypliis mycelicis eseptatis, 3-4 ;*. crassis, in cellulas 

 inatricis radiatim regulariterque evolutis; raaculis amphigenis, cen- 

 tro aroscentibus, 1-10 cm, diam,, brunneis; hyphis sporangiferis 

 vix emergentibus, apico inflatis; sporangiis oblongo-ovatis, utrin- 

 que rotundatis, 48-55*19-22 apice papilla munitis; pedicello spo- 



