522 Gäu mann, Über die Formen der Peronospora parasitsca (Pers.) Fries. 
Die Vermutung, daß die Peronospora auf Brassica sich bio¬ 
logisch von der übrigen Per. parasitica unterscheide, wurde zuerst 
ausgesprochen von Schrenk (1905). 
Peronospora Gäumanniana Jaap in litt. 
Caespitulis densis, in tergo foliorum expansis; conidiophoris 
plurimis (2—8) coalitis, 300—500 p altis, furcis 20—65 p longis, 
literae „sigma“ similiter curvatis, sed saepe parte ultima inflexis; 
conidiis late ellipsoideis, 14—29, fere 19—23 p longis, 11—25, 
fere 14—21 p latis, longitudine media 21,31 p, latitudine media 
17,95 p\ oosporis et oogoniis ignotis. Habitat Berteroam muta- 
büem DC. 
Peronospora Buniadis. 
Caespitulis raris, in tergo foliorum expansis; conidiophoris 
plurimis (1—9) coalitis, 300—500 p altis, furcis 15—80 p longis, 
literae „sigma“ similiter curvatis; conidiis late ellipsoideis, 16—32, 
fere 21—26 p longis, 12—26, fere 19—23 p latis, longitudine 
.media 22,74 p, latitudine media 20,30 p\ oogoniis et oosporis 
ignotis. Habitat Buniadem orientalem L. 
Peronospora Calepinae. 
Caespitulis densis, in caulibus, inflorescentiis et in tergo folio¬ 
rum expansis; conidiophoris singulis vel plurimis (1—3) e stomatibus 
exeuntibus, 300—700, fere 400—500 p altis, furcis 30—80 p longis, 
literae „sigma“ similiter curvatis; conidiis late ellipsoideis, 12—33, 
fere 19—24 p longis, 9—24, fere 16—20 p latis, longitudine 
media 22,46 p , latitudine media 18,74 p\ oogoniis e tunica persis- 
tenti formatis, 35—60, fere 45—50 p diam, oosporis globosis, 
28—37, fere 33—35 p diam. Habitat Calepinam irregulärem 
(Asso) Thellung. 
Peronospora Camelinae. 
Synonyme: 
Per. parasitica Ung. f. Camelina J. Kühn 1864 (Rabh. Fungi europ. 790 b. 
nom. nud. in sched.). 
Per. parasitica Pers. f. Camelinae Schneider 1869 (nom. nud. in sched. Herb 
schles. Pilze 123). 
Caespitulis raris, in caulibus, foliis et siliquis expansis; coni¬ 
diophoris (cf. fig. 13) plurimis (2—3) coalitis, 250—300 p altis, 
furcis brevibus, irregularibus; conidiis late ellipsoideis, 17—28, fere 
21—24 p longis, 12—24, fere 18—21 p latis, longitudine media 
22,47 p, latitudine media 19,25 p\ oogoniis frequentissimis in 
caulibus, e tunica persistenti formatis; ellipsoideis, 43—58, fere 
51—54 p longis, oosporis globosis, 30—34 p diam. Habitat Came- 
linam sativam (L) Crantz et probabiliter Camelinam microcarpam 
Andrz. 
