PHYCOMYCETES OF IOWA 
291 
Psedera quinquefolia 
Plasmopara Viticola (B. and C.) 
B. and dT. 
Radicula Armoracia 
Cystop'us candidus (Pers.) Eev. 
Radicula palustris 
Cystopus candidus (Pers.) Eev. 
Peronospora parasitica (Pers.) 
Tul. 
Radicula sessiliflora 
Cystopus candidus (Pers.) Eev. 
Ranunculus repens 
Peronospora ficariae Tul. 
Raphanus sativus 
Cystopus candidus (Pers.) Eev. 
Peronospora parasitica (Pers.) 
Tul. 
Rosa sp. 
Peronospora sparsa Berk. 
Rudbeckia laciniata 
Plasmopara Halstedii (Farl.) B. 
and dT. 
Rudbeckia triloba 
Plasmopara Halstedii (Farl.) B. 
and dT. 
Scrophularia nodosa 
Peronospora sordida B and Br. 
Setaria Italica 
Sclerospora graminicola (Sacc.) 
Schr. 
Setaria viridis 
Sclerospora graminicola (Sacc.) 
Schr. 
Silphium sp. 
Plasmopara Halstedii (Farl.) B. 
and dT. 
Silphium laciniatum 
Plasmopara Halstedii (Farl.) B. 
and dT. 
Silphium perfoliatum 
Plasmopara Halstedii (Farl.) B. 
and dT. 
Sisymbrium canescens 
Cystopus candidus (Pers.) Eev. 
Peronospora parasitica (Pers.) 
Tul. 
Sisymbrium officinale 
Cystopus candidus (Pers.) Eev. 
Peronospora parasitica (Pers.) 
Tul. 
Solanum tuberosum 
Phytophthora infestans (Mont.) 
D.By. 
Rhizopus nigricans Ehr. 
Viola Americana 
Peronospora vicia (Berk.) D. 
By. 
Peronospora trifoliorum D.By. 
Viola sp. 
Peronospora violae D.By. 
Vitis labrusca 
Plasmopara viticola (B. and C.) 
. B. and dT. 
Vitis ibicolor 
Plasmopara viticola (B. and C.) 
B. and dT. 
Vitis vulpina 
Plasmopara viticola (B. and C.) 
B. and dT. 
Xanthium canadense 
Plasmopara Halstedii (Farl.) B. 
and dT. 
BIBEIOGRAPHY 
E Bessey, C. B., Bui. Dept, of Botany, la. State College, 1884. 
2. Halsted, B. D., Bui. Dept, of Botany, Iowa State College, 1886. 
3. Wilson, G. W., North American Peronosporales. 
4. Greene, W., Plants of Iowa. Bui. State Hort. Soc., p. 22, 1907. 
5. Pammel, L. H., New Fungous Diseases of Iowa; Jour. Myc. Vol. 7, 
p. 95. 
6. Pammel, L. H., and Carver, G. W., Fungous Diseases of Plants at 
Ames, Iowa; Proc. la. Acad. Sci., Vol. 3, p. 140, 1895. 
7. Pammel, L. H., and King, C. M.. Notes on Factors in Fungous Dis- 
eases of Plants with Records of Occurrence of Plant Diseases at 
Ames for a period of twenty-five years; Proc. la. Acad. Sci., Vol. 
' 16, p. 41, 1909. 
8. Pammel, L. H., Diseases of Plants at Ames, 1894; Proc. la. Acad. 
Sci., Vol. 2, p. 201, 1894. 
9. Pammel, L. H., Grasses of Iowa; Bui. 54, la. Agr. Exp. Sta., 1890. 
10. Halsted, B. D., Iowa Peronosporae and a Dry Season; Bot. Gaz., Vol. 
13, p. 52, 1883. 
11. Barlow, W. G., Enumeration of the Peronosporae of the U. S. ; Bot. 
Gaz., Vol. 8, p. 305, 1888. 
12. Barlow, W. G., Additions to the Peronosporae of the U. S. ; Bot Gaz., 
Vol. 9, p. 37, 1884. 
13. Swingle, W. T., Some Peronosporacae in the Herbarium of the Di- 
vision of Vegetable Pathology; Jour. Myc., Vol. 7, p. 109, 1892. 
