Phycomycetre, Peronosporacesp, Peronosnora. 459 



breviore et recurvo; conidiis fuscidulis 13 u. diam. V. ellipsoideis 

 ad 19 li. longis; oosporis ignotis. 



Hab. m pag. inf. foliorum AlcheinillEe vulgaris pr. Bern 

 Helvetise. — An var. Per. Potentillce De Bary^ 



5. Peronospora PodagrariaB Otth ap. Trog, Mitth. Nat. GeseU. Bern. 1741 

 1857, p. 45. — Hyphis diaphanis, rectis, strictis, ramulis paucis 

 patuhs brevibus, apice in lobulos patentes ternos v. quatemos di- 

 visis; conidiig in quoque lobulo solitarie acrogenis, majusculis, glo- 

 bulosis, iDtus granalosis, hyalinis. 



Hab. m pag. inf. foUorom -^gopodii Podagrarise, Bem 

 Helvetiae. — An diversa a Plasmopara nivea? 



6. Peronospora CorcilaB Tranzsch, Hedw. 1895, p. 214, — Csespi- 1742 

 tulis laxis, griseis; hyphis conidiophoris soUtariis, inter duas epi- 

 dennidi» cellulas vel e stomatibus emergentibus, basi bulbiformiter 

 tumidis, longissimis, 300-470 u., a^tate membrana sordide-grisea, 

 sursum 4-6-ies dichotomis; ramis erectis, ramulis ultimis erectis, 

 subulatis acutisque; conidiis magnis, obloDgo-eUipsoideis , basim 

 versus angustatis, apice acutiosculis, sordide violaceis, 32^-^ « 17-20, 

 plerumque 36 >i 18 p.; oosporis cum episporio 32-36 fx. diam.; epi- 

 sporio castaneo, crasso, anguloso-pUcato. 



Hab. in coroUis vivis Campanulae persicifolise, Gouv. 

 Nowgorod, Rossia. 



7. Peronospora Giliae Ell. et Ev. Contr. U. Nat. Merb. III, n. 4. 1895, 1743 

 p. 276. — HypophyUa; byphis laxe intricatis, griseis; fertiUfaus 

 erectis, firmis, 300-400 « 8-lOySursam 3-4 dichotomo-ramosis; ramis 

 ramulos breves leniter curvatos 10-15 ^. longos, apicibus saepe 

 bifidis, gerentibus; conidiis elUpticis, levibus, hyaUnis v. subhyalinis, 

 18-22 >»« 12-15; oosporis globosis, flavo-brunneis, 30-45 ,u. diam., 

 spisporio crasso, dense subreticulato, tuberculoso-aspero praeditis. 



Hab. in foUis Gilige in Amer. bor. 



8. Peronospora Plantagifiis Underw. BuU. Torr. Bot. Cl 1897, p. 83. 1744 



— CasspiteUs foliicoUs, 1-3 cm. latis; hyphis conidiophoris plerum- 

 que soUtariis, longe exsertis, irregulariter 5-6-ies dichotomis; m- 

 muUs ultimis brevibus, insequaUbus, recurN-is, 4-12 y. longis; co- 

 nidiis anguste ovaUbus v. Umoniformibus, utrinque acutis, obsouris, 

 40-44 >!:* 16-18; oosporis nondum visis. 



Hab. in foUis Plantaginis aristatae, Alabaroa Amer. bor. 



9. Peronospora Seymoarii Burr. BuU. Torr. Bot. Cl. 1897, p. 83. 1745 



— Maculis sparsis, albis, foUicoHs v. caulicolis.; hyphis mycelicis 

 effusis, haustoriis torulosis; hyphis gonidiophoris gracilibus, 7-8- 



