Phycomycetese, Peronosporcfe, Pdronospora. 343 



raro initio 3-chotonis, rarnulis arcuatis ultimis partitn brevibus 

 rectisque, partim longiusculis subulatis incurvisquo; coiiifliis el- 

 lipsoideis vel ovatis, hyalinis, lateraliter gerrainantibus; oosporis 

 pellucidis, flavo-brunneis. 



Ilab. in foliis Primulae veris in pratis raontanis prope Lau- 

 terberg Germaniae (Oertel). — Ad sectionem IV Pleuroblasta^, C. 

 e(fmcc de Bary pertinet. 



2. Peronospora Muscorum Sorok. Mycol. (rossice, Kazan 1872), p. 22, 1139 

 t. 5, f. 26-27. — Hyphis repentibus, septatis, conidiophoris ere- 

 ctis, exilibus, apice pluries furcatis; conidiis piriformibus; oogoniis 

 sphsericis, intra cellulas muscorum evolutis. 



Hab. in Muscis in Rossia. 



3. Peronospora Cynoglossi Burr. in Swingle Kaus. Peronosp. p. 77. 1440 



— Hyphis conidiophoris hypophyllis, gracilibus, circ. 6-8-dicho- 

 tomice ramosis, late expansis, vuigo subflexuosis; conidiis e sub- 

 globoso ellipsoideis, papilla apicali instructis, pallide violaceis, 13- 

 19 2; 15-24; oogoniis pachypleuris, brunneis, 40-50 ^. diara.; oospo- 

 riis parietibus crassis, levibus, pallide brunneis, 25-30 a. diara. 



Hah. ad folia Cynoglossi officinalis, lUinois Amer. bor. 



— Fungus cEespites latos, prominentes, indefinitos efformans; pa- 

 gina foliorum superior flavida, dein fusco-brunnea. — Var. Echi- 

 nospermi Swingle loc. cit. A typo recedit conidiophoris parcius 

 ramosis et magis rigidis, conidiis raulto majoribus et non papil- 

 latis, 23-33:^17-28. In foliis Echinospermi Uedowskii var. 

 cupulati, Kansas Amer. bor, 



4. Peronospora alpina Johans. in Bot. Centr. XXVIII, 1886, p. 394. 1441 



— Ca^spitulis albis, perexiguis, conidiophoris apice plerumque tri- 

 fidis, ramulis lougioribus 15-25 y.. long., conidiis ellipsoideis vel 

 ovoideis, 18-23^13-16, apice minute papillatis ; oosporis globosis, 

 30-40 a. diam. 



Hab. in foliis Thalictri alpini prope Are in Jemtlandia. — 

 Ab affini P. 'pygmnea diff^ert rainutie. 



5. Peronospora Hedeomatis Kell. et Swingl. Kans. Peronosp. p. 81.— 1442 

 Maculis obsoletis; conidiophoris erectis (4-9), 5-8-ies dichotomo- 

 ramosis, 160-460 a. long., 8-12 a. cr., ramis longis, obtusiusculis, 

 ultimis brevibus, subacutis; conidiis globosis, hyalinis, maturis sub- 

 ovatis, fuscis, non papillatis, 24-30^:14-17; oosporis globosis vel 

 subovatis, ex hyalino flavidis, 22-30 a. diam., episporio 2-3 a. cr., 

 levi, subiiide colliculoso, intus granulosis vel 1-guttatis ; oogoniis 

 subovatis, 30-50 ^ 27-36, 



