Wilson : Studies in North American Peronosporales 549 



Lactuca spicata (Lam.) A. S. Hitchcock. 



Bremia Lactucac Regel. 

 Lactuca sp. 



Bremia Lactucae Regel. 



MULGEDIUM LEUCOPIIAEUM DC; SCC LOC- 



tuca spicata (Lam.) A. S. Hitchcock. 

 Nabalus albus (L.) Hook. 



Bremia Lactucae Regel. 

 Nabalus altissimus (L.) Hook. 



Bremia Lactucae Regel. 

 Prenanthes altissima L. ; sec Nabalus 



altissimus (L.) Hook. 

 SONCHUS ASPER (L.) All. 



Bremia Lactucae Pegel. 

 SONCHUS sp. 



Bremia Lactucac Regel. 

 Tracopocon porrifolius L. 



Albugo Tragopogonis (DC.) S. F. Gray. 



convolvulaceae 



Batatas edulis (L.) Choisy; see Ipomoea 



Batatas (L.) Lam. 

 Calonyctio.v aculeatum (L.) House. 



A Ibugo Ipomoeae-pan duranae ( Schwein. ) 

 Swingle. 

 Calystegia Sepium (L.) R. Br.; see Con- 

 volvulus Sepiutn L. 

 Convolvulus Batatas L. ; see Ipomoea 



Batatas (L.) Lam. 

 Convolvulus in can us Vahl. 



Albugo I pomoeae-panduranae (.Schwein.) 

 Swingle. 

 Convolvulus macrorrhiza; see Ipomoea 



pandurata (L.) Meyer. 

 Convolvulus Sepium L. 



Albugo Ipomoeae-panduranae (.Schwein.) 

 Swingle. 

 Convolvulus sp. ; see Ipomoea hederacea L. 

 Convolvulaceae, gen. et sp. ignot. 



Albugo Ipomoeaepanduranae(Schvfein.) 

 Swingle. 

 Ipomoea Batatas (L.) Lam. 



Albugo I pomoeae-panduranae(Schvf ein.) 

 Swingle. 

 Ipomoea Carolina (L.) Pursh. 



Albugo Ipomoeae-panduranae ( Schwein.) 

 Swingle. 

 Ipomoea commutata R. & S. ; see /. Caro- 

 lina Pursh. 

 Ipomoea hederacea (L.) Jacq. 



Albugo Ipomoeae-panduranae (Schwein.) 

 Swingle. 

 Ipomoea incarnata Vahl. 



Albugo Ipomoeae-panduranae (Schwein.) 

 Swingle. 

 Ipomoea lacunosa L. 



Albugo I pomoeae-panduranae(Schwein.) 

 Swingle. 

 Ipomoea leptophvlla Torr. 



Albugo Ipomoeae-panduranae (Schwein.) 

 Swingle. 



Ipomoea mexicana A. Gray. 



Albugo Ipomoeae-panduranae (Schwein.) 

 Swingle. 

 Ipomoea pandurata (L.) Meyer. 



Albugo Ipomoeae-panduranae(Schwcin.) 

 Swingle. 

 Ipomoea Pescaprae (L.) Roth. 



Albugo Ipomoeae-panduranae (Schwein.) 

 Swingle. 

 Ipomoea purpurea (L.) Lam. 



Albugo Ipomoeae-panduranae(Schwein.) 

 Swingle. 

 Ipomoea tamnifolia L. ; see Jacquemontia 



tamnifolia (L.) Griseb. 

 Ipomoea trichocarpa Ell. 



Albugo Ipomoeae-panduranae (Schwein.) 

 Swingle. 

 Ipomoea triloba L. 



Albugo Ipomoeae-panduranae(Schwein.) 

 Swingle. 

 Jacquemontia tamnifolia (L.) Griseb. 



Albugo Ipomoeae-panduranae (Schwein.) 

 Swingle. 

 Quamoclit Quamoclit (L.) Britton. 



Albugo Ipomoeae-panduranae (Schwein.) 

 Swingle. 

 Quamoclit vulgaris L. ; see Q. Quamoclit 

 (L.) Britton. 



CUCURBITACEAE 



Beyonopsis laciniosa erythrocarpa Naud. 

 Pseudoperonospora cubensis (B. & C.) 

 Rostow. 

 CiTRULLUS VULGARIS Schrad. 



Pseudoperonospora cubensis (B. & C.) 

 Rostow. 

 COCCINIA INDICA Wight & Am. 



Pseudoperonospora cubensis (B. & C.) 

 Rostow. 

 CucuMis Anguria L. 



Pseudoperonospora cubensis (B. & C.) 

 Rostow. 

 CucuMis angulatus Forsk. 



Pseudoperonospora cubensis (B. & C.) 

 Rostow. 

 CucuMis DiPSACEUS Ehrenb. 



Pseudoperonospora cubensis (B. & C.) 

 Rostow. 

 CucuMis ERINACEUS; horticultural name for 



C. dipsaceus Ehrenb. 

 CucuMis Melo L. 



Pseudoperonospora cubensis (B. & C.) 

 Rostow. 

 CucuMis oDORATissiMUS Mocnch. 



Pseudoperonospora cubensis (B. & C.) 

 Rostow, 



CuCUMIS SATIVUS L. 



Pseudoperonospora cubensis (B. & C.) 

 Rostow. 



