TWENTY-THIBD ANNUAL MEETING. 131 



On Lepidium intermedium Gr. 

 1958, on leaves, April 4, 1890, Manhattan; 1959, on leaves, April 28, 1890, Man- 

 hattan; 1960, on leaves, May 8, 1890, Manhattan; 1998, on leaves of seedling plants, 

 OCTOBER 19, 1890, Manhattan. 



2. Cystopus Ipomoeae-panduranae (S.) Stevenson & Swingle. 



On Ipomoea hederacea Jacq. 



1966, on leaves, August 20, 1890, Manhattan. 



In Seymour and Earle, Economic Fungi Fascicle I., January 1, 1890, No. 47, 

 this species is given as Cystopus Ipomoeae-panduranae (S.) Farl. Farlow and Sey- 

 mour, in their Provisional Host-Index of the Fungi of the United States, Part II., 

 September, 1890, pp. 81 and 82, also give the name in this manner. Although 

 Prof. Farlow said in August, 1889,^ "Undoubtedly the first name given to the form 

 on Convolvulaceae in North America was ^cidium Ipomoeae-panduranae" yet he 

 nowhere actually called the species Cystopus Ipomoeae-panduranae. This was first 

 done by Mr. W. C. Stevenson, jr., and myself in my list (p. 67, No. 2), which was pub- 

 lished November 1,1889; so the name should be given Cystopus Ipomoeae-panduranae 

 (S.) Stevenson et Swingle. 



3. Cystopus Portulacae (DC.) Lev. 



On Portulaca oleracea L. 



1967, July 12, 1890, Manhattan; Mr. E. Bartholomew, No. 236, on leaves, July 15, 

 1888, Rockport, Rooks county; 1970, coll. W. T. Allen, on leaves, August 13, 1890, Man- 

 hattan; 1968, with abundant mature oospores, on leaves, August 20, 1890, Man- 

 hattan; 1969, with abundant mature oospores, on leaves, August 20, 1890, Zeandale, 

 Riley county. 



In No. 1967 the abundant growth of mycelium caused the affected branches to as- 

 sume an upright habit of growth like Euphorbia, maculata L., when attacked by 

 Mcidium Euphorbiae Persoon. 

 5, Cystopus Amaranti (S.) Berkeley. 



On Amarantus retroflexus L. 



1950, June 2, 1890, Manhattan; ( the first specimen found; it was very rare) ; 1951, 

 with mature oospores, on leaves, June 14, 1890, Manhattan (abundant); 1952, coll. 

 M. Varney, July 15, 1890, Manhattan. 



On ACNIDA TUBERCULATA Moq. 



1953, coll. M. Varney, on leaves, July 5, 1890, Manhattan; 1954, coll. M. Varney, 

 with mature oospores, on leaves, July 15, 1890, Manhattan; 1955, on leaves, August 

 20, 1890, Manhattan. 



Cystopus Amaranti is more rare on this host at Manhattan than on either Amaran- 

 tus albus or A. blitoides. It is very common on Amarantus retroflexus. 

 10. Plasmopara Halstedii (Farlow) Berlese & DeToni. 



On Ambrosia j)silostacliya DC. 

 E. Bartholomew No. 348, July 27, 1889, Rockport, Rooks county. 



On Helianthus grosseserratus Martens. 

 1997, May 21, 1890, Manhattan. 



On BIDENS CHRYSANTHEIMOIDES Mich. 

 1996, June 3, 1890, Manhattan. 



' Farlow, W. G., " Notes on Fungi. I," in The Botanical Gazette, Vol. XIV, No. 8, August, 1S89, p. 188, 



