7'J 



Hab. In Viciis, Lathyro prafensi, Ervis ct Piso sativo 

 mensibus Augusto ct Septembri in Fcnnia saltcm australi 

 passim obvia *). 



8. P. Alsinearum Casp. in Ber. der Bcrl. Acad. d. 

 Wisseusch. 1855. 



Stipites validi, aeqvaliter, raro inaeqvalitcr 4 — 5 — Siies 

 dicbotomi; rami patentes, ultimi subulati, elongati, plcrum- 

 qve arcuati. Zoosporangia ellipsoidea, utrinqve obtusissima, 

 plus minus sordide violacea. Oosporae cristis validis, cras- 

 sis, numerosis, connexis subregulariter reticulatac, laete fuscae. 



Syn. Peronospora Alsinearum De B. in Hcdw. 1864, N:o 9, 

 p. 135. P. Scleranthi Rab. in Horb. myc. I, 1471 b. 



Exsicc. Rab. Fung. cur. II. 378 et 379. Karst. Fung. 

 Fenn. 582. 



Hab. In Cerastio vulgaio et Sclcrantho anymo in re- 

 gione Mustialensi et in paroecia Kimitto mense Julio lccta **). 



C. Oogonii membrana vix incrassata, maturitatc cor- 

 rugata, marcescens. Oosporae episporio crasso, cristis pau- 

 cis, grossis, valde irregularibus, connexis, oogonii membra- 

 nae hinc inde adglutiuatis munitae, irrcguhiriter angulatae. 

 Myceliura et haustoria (exceptis duabus ultimis speciebus) 

 divisionis B. 



9. P. effusa (Grev.) Rab. Herb. myc. 1880. 



Stipites fasciculatim e stomatibus egredientes, brevcs, 

 crassi, superne 2— 5— 6-ies, raro 7-ies dichotorai. Rarai ul- 

 timi crassi, breviter subulati, arcuatim deflexi. Zoosporan- 

 gia ellipsoidea, conspicue pedicellata, sordide et dilute violacea. 



*) P. calotheca De B. 1. c. in Asperida odorata, Galio Apa- 

 rine et G. Mollugine nec nou P. Myosotidis De B. 1. c. in Muoso- 

 tide stricta, 31. hispida et Asperugine procumbcnte inqvircnduc sunt. 



**) P. Arenariae (Berk.) De B. 1. c, Arenariam serpyllifoliam et 

 Moehnngiam trinervem infestans, vix dubic in Fennia iuvcuicndu cst. 



