1889.] BOTANICAL GAZETTE. 1 89 



Alabama. The leaves were sent to me as cotton leaves, to 

 which they bear a strong resemblance, but a microscopic ex- 

 amination shows that they can not be cotton leaves, but prob- 

 ably leaves of some Ipomoea or Convolvulus. The date of 

 the original Schweinitzian name is 1822, which must be 

 prior to anv name of Otth, even if I am mistaken in sup- 

 posing the name cited by Zalevvski to be merely an her- 

 barium name of Otth. In 1834 Schweinitz in Syu. Fung. 

 Am. Bor. no. 2866 changed his original name to Cteoma 

 Convolvulatum , and in Grevilha, iii. 60, Berkeley and Curtis 

 enumerated ALcidium Ipomoece Schw. on I. trichocarpa, the 

 same as I. commutata mentioned above. ^Ecidium Ipomoea; 

 is apparently an abbreviation of the name in the Syu. Fung. 

 Car. In the Sylloge, vii. 671, Berlese and De Toni give 

 ^Ecidium Ipomcese-panduranae as a synonym of Puccinia 

 Ifomoece Cke., based on the specimen in Ravenel's Fungi 

 American/, no. 792. This is an error, for the secidium in the 

 specimen named is certainly not the true AZc. Ifomay -pan- 

 durance of Schweinitz, but what is called by Cooke, in Gre- 

 v/Ilea, xiii.6, ALcidium Co nvolvuli Schw . var. Jpomoece. 



In this connection it may be said that Cystopus cubicus 

 has been found on Matricaria at San Diego by Mrs. Eigen- 

 mann, and on Perityle Californica, var. nuda, in Lower Cal- 

 ifornia. The last named specimens, received from Mr. Col- 



ville, contained ripe oospores. 



Last autumn I received from Mr. K. Miyabe a very in- 

 teresting Peronospora, found bv Mr. Y. Tanaka on Cucumis 



June at Minoma, Tokio, Jap 



The 

 dried material received~was accompanied by some excellent 

 drawings, showing not only the conidia, but also illustrating 

 the germination, which was bv means of zoospores. ^ The 

 Peronospora hitherto known on Cucurbitaccce in the L nited 

 States is P. australis Speg., P. sicvicola Trelease of my pre- 

 vious paper. In the Sylloge Fungorum P. australis and P. 

 sicyicola are described separately, but there can be no doubt 

 that they are the same species, since not only does Spegaz- 

 zini's excellent description answer to our plant, but speci- 

 mens which were sent to him were pronounced by him to be 

 certainly the same as the South American plant. 1 he ger- 

 mination of the conidia of P. australis has not been seen, but 

 the pinnate branching and condensed spiny tips of the com- 

 diophores, and the general character of the spores are so 

 much like those of such species as P. viticola and F. Hal- 

 stedii, which are known to produce zoospores, that it might 

 be supposed that it would also produce zoospores. 



