208 Journal of Mycology [Vol. 13 



this species is the first one from this section which is cited by 

 Schroter it is the type of the genus. Of his other species two 

 were known to de Bary, while the others, including the type of 

 Basidiophora, are of later date. 



11. CHLOROSPORA Spegazzini, Rev. Argent. Hist. 

 Nat. 1 : 29. 1891. 



The single species of this genus, C. vastatrix, is described 

 as having monopodially branched conidiophores and colored 

 conidia which germinate by a plasma. The genus is, therefore, 

 very close to Plasmopara. 



12. DREPANOCONIS Schrot. & P. Henn. ; Henning's, 

 Hedwigia 35: 211. 1896. 



This genus, which is placed by its authors in Albnginaccac, 

 contains a single species D. hrasiliensis, the true position of 

 which is probably among the Hyphomycetes. 



13. PSEUDOPERONOSPORA Rostewzew, Ann. Inst. 

 Agron. Moscow 9 147. 1903 ; Flora 92 :4_22. 1903. 



The present genus was founded upon Peronospora cubcnsis 

 B. & C. and a Russian variety of that species. The characters 

 of thes fungi and their relatives are discussed in detail and the 

 article, which is in Russian, is profusely illustrated. There is 

 no room to question the identity of the genus and its type. A 

 translation of the article appeared in Flora about eight or ten 

 months later. 



Synonym: Peronoplasmopora (Berlese) Clinton. 



14. KAWAKAMIA Miyabe, Mag. Bot. Tokyo i7:(3o6). 

 1903. 



This genus is founded on a single species, Peronospora cy- 

 peri Miyabe & Tdeta. Although published in the Japanese sec- 

 tion of the Magazine the descriptions of both genus and species 

 are in English. 



15. PERONOPLASMOPARA Clinton, Ann. Rep. 

 Conn. State Agr. Exp. St. 29 1234. 1905. 



Berlese* proposed this name for a subgenus of Plasmopara 

 in which he included two species, Plasmopara Celtidis (Waite) 

 Berlese and P. cubcnsis (R. & C.) Humphrey. He described 

 both species and figured the latter, which is therefore the sub- 

 generic type. When Clinton elevated the subgenus to generic 

 rank he designated "Types: PcronopJasmopara cubcnsis (B. 

 & C.) Clinton, Pcronoplasmopara celtidis (Waite) Clinton." As 

 it is manifestly impossible for a genus to have more than one 

 type, and as his discussion is based almost entirely upon the 

 first species which he mentions we must consider both subgenus 

 and genus as founded upon Peronospora cubcnsis B. & C. 



*Riv. Pat. Veg. 9:123. 1900. 



