68 KANSAS Academy of Science. 



On Ipomoea leptophylla Torr. 

 642, conidia on leaves and stems, oospores abundant in stems, August 20, 1884, 

 Garden City, Finney county. 



On Ipomoea pandurata Meyer. 

 1008, conidia on leaves, petioles, and stems, oospores only in stems, mature 

 mature, July 18, 1887, Mound City. 



Mr. W. C. Stevenson, jr., of Philadelphia, has compared Kansas specimens with 

 the original specimen of ^Ecidium IpoiHomeae-pandiiranae in the Schweinitzian 

 Herbarium, and pronounces the conidia and oospores identical in both. The 

 oospores of this species are very different from those of Cystopus Trapopogonis, to 

 ■which it has been referred by many writers. They are sub-globose or slightly oval, 

 yellow or yellowish brown, about 40-50// diam., with a very thick (about 5-8//) wall; 

 epispore thick, colored, marked with thick, blunt, rather sparse tubercules; oogonia 

 rather closely fitting the oospores, about 50-65// diam., hyaline, with irregular, 

 abundantly sinuose-tuberculate ridges, or folds. 



The epispore often comes off the oospore and remains in the oogonium when it 

 is crushed. When wanting the epispore, the oospores are seen to be hyaline, and to 

 have a thick inner wall. The antheridia can be plainly seen, even in mature speci- 

 mens, attached to the outside of the oogonia, and connected with the oospores by a 

 thick, short, colored tube. 



A few oospores were seen which seemed to be abortive. Instead of containing a 

 single large oospore, the oogonium contained several small thick-walled yellow 

 spheres. 



3. Cystopus Portulacae ( DC.) Lev., in Ann. Sci. Nat., ser. 3, t.VIII (1847), p. 371. Ukedo 



PoBTULACAE DC. Fl. Franc, vol. II, p. 88; vol. VI, p. 68. [Bot. Gaz., vol. VIII, 

 p. 336; Syll., vol. VII, p. 235, No. 795.] 



Conidia and oospores on leaves and capsules of Portulacaceae June to Octo- 

 ber; most abundant in July and August. 



On Portulacea oleracea L. 

 1601, June 21, 1S89, Manhattan; 1509, July 20, 1886, Manhattan; 1767, on leaves, 

 July 27, 1889, Manhattan; M. A. Carleton No. 161, with mature oospores, July, 1886, 

 Cloud county; 1515, August 21, 1885, Kinsley, Edwards county; 418, August 31, 1883, 

 Manhattan; 1895, on leaves and capsules, with mature oospores, October 15, 1889, 

 Manhattan. 



4. Cystopus Trapopogonis (Pers.) Schroeter, in Cohn. Krypt. Flor. Schles., Ill Band 



B. 234, No. 348. Uredo Candida Pers., var. B. Ubedo Tkapopogi Pers. Syn. Meth. 

 Fung., p. 223. Cystopus oubious (Strauss) Lev., in Ann. Sci. Nat., ser. 3, t. VIII. 

 Ubedo oubioa Strauss, in Ann. Wetterauer Ges. f. Naturk., vol. II, p. 86; pi. 2, f. 3. 

 [Bull. Bussey Inst., vol. I, p. 429; Bot. Gaz., vol. VIII, p. 335; Syll., vol. VII, p. 234, 

 No. 793.] 



Conidia and oospores on leaves, stems and inflorescence of Compositae Tubuli- 

 florae June to August, most abundant June and July. 



On Iva ciliata Willd. 

 M. A. Carleton No. 158, on leaves and sparingly on inflorescence, August 20, 1886, 



Cloud county. 



On Ambrosia artemisiaefolia L. 



1587, on leaves, June 6, 1889, Manhattan; 1593, on leaves, June 9, 1889, Manhat- 

 tan; 1167, on leaves, June, 1887, Manhattan; 1764, oospores and conidia on leaves, 

 July 30, 1889. 



