Witson: NortH AMERICAN PERONOSPORALES 71 
Ipomoea pandurata L., Alabama, Carver; Delaware, Com- 
mons ; Florida, Hume 79, Nash 1889, Tracy 7155; 
Georgia, Underwood; Illinois, Hart; Indiana, Arthur, 
Olive; Missouri, Kellerman, Galloway, Tracy & Galloway ; 
New Jersey, * Halsted 164 (Econ. Fungi 377, also conidia 
as 336), Stevens; Ontario, * Dearness; Virginia, Paul 
(Fungi Columb. 2004). 
Lpomoea Pes-caprae L., Bahamas, Hitchcock ; Porto Rico, Hel- 
ler 1396. 
/pomoea simulans Hanbury, Morelos, Pringle 6565. 
Lpomoea triloba 1.., Arizona, LeRoy, Pringle. 
Pharbitis hederacea (L.) Choisy, District of Columbia, Wi- 
hams ; Georgia, Underwood; Illinois, Seymour ; Indiana, 
Olive, Underwood; Kansas, Bartholomew (Fungi Columb. 
2002); Kentucky, Ke/erman ; Louisiana, Langlois 589 ; 
Missouri, Galloway, Pammel ; Nebraska, Williams ; New 
_ Jersey, Halsted (Econ. Fungi 3344, 334c¢) Stevens ; South 
Carolina, Ravenel (Fungi Am. 502), Rolfs 1686 ; Virginia, 
Seymour (Econ. Fungi 3342). 
Pharbitis purpurea (L.) Voigt, Georgia, Underwood ; Missis- 
Sippl, £vacy. 
Thyella tamnifolia (L.) Raf., Cuba, Britton & Shafer 679. 
The following additional hosts are reported within our limits : 
Convoloulus sepium 1.., Ipomoea incarnata Vahl, /. Jalapa Michx., 
and Quamoclit Ouamoclit (L.) Britton. 
Type Locatity : North Carolina, on /pommvea “ pandurana” L. 
Disrrisution : Ontario to California, Central America and the 
West Indies. Also in South America, Europe, Asia and Africa. 
5. Atsuco Lepriconi (de Bary) Kuntze, Rev. 
Gen: Pl. 27.658. 1891 
Erysibe Sphaerica 2 Caryophyllacearum Wallr. Fl. Crypt. Germ. 
2: 193. 1833. 
Cystopus Lepigoni de Bary, in Rabenh. Fungi Europ. 483. 1863. 
Cystopus argentinus Speg. Bol. Acad. Ci. Cordoba II: 28. 1887. 
-aulicolo i - sori d or elongate, I-3 mm., 
yellowish ; conidiophores clavate; conidia with the membrane of 
__Uniform thickness throughout, of two kinds, the terminal larger, 
“ hyaline or light-yellow, globular, 25 30 p, the membrane about 5 # 
