394 Wirson: NortH AMERICAN PERONOSPORALES 
Peronospora simplex Peck, Ann. Rep. N. Y. State Mus. Nat. Hist. 
3f:45. 1879. 
Plasmopara entospora Schrot. in Cohn, Krypt. Fl. Schles. 3': 237. 
1886. 
Hypophyllous, forming angular areas 1-8 mm. across, bounded 
by the veins of the leaf; conidiophores arising from the stomata, 
singly or in groups, hyaline, 150-300 x 8-20 yw, apically much 
enlarged, 17-25 y, lateral branches 5-20, about 6-10x2 p; 
conidia ovate, 20-36 x 10-20 p: oospore light yellowish-brown, 
40-50 4; epispore conspicuously ridged. 
On CARDUACEAE: 
Aster Novae-Angliae L.., Indiana, Wilson; Wisconsin, Tre- 
lease (N. Am. Fungi 705). 
Aster oblongifolius Nutt., Nebraska, * Bates (Fungi Columb. 
7950). 
Lrigeron philadelphicus L., Louisiana, Langlois 1669. 
Erigeron ramosus (Walt.) B.S. P., Illinois, Farle, Waite. 
Leptilon canadense (L.) Britton, Missouri, *Pammel. 
Solidago rigida L., Illinois. * Seymour (N. Am. Fungi 
74056, Fungi Europ. 3277), 
Reported also from our limits on Aster sagittifolius Willd. and 
Rudbeckia fulgida Ait. 
TYPE Locatity: France, on Leptilon canadense (L.) Britton. 
Distrisution: New York to Wisconsin, Nebraska, Texas, 
and Alabama. Also in Europe and South America. 
Icones: Ann. Sci. Nat. V. 11: pl. 4; Rabenh. Krypt. FI. ed. 
2 I": 424e F682 Berlese, Icon, Fung. Phyc, p/. 7. 
2. Basidiophora Kellermanii (Ellis & Halsted). 
Peronospora Kellermanii Ellis & Halsted “pro tem.” ; Ellis & 
Everh. N. Am, Fungi 2207, 1889. (Hyponym.) 
Plasmopara sp. Swingle, Trans. Kan. Acad. Sci. 17: 74. 1880. 
Plasmopara Kellermanti Swingle ; Sacc, Syll. Fung.g: 342. 1891. 
short, 5-8 x 24; conidia globose-ovate, 20-22 x 18-20 ff; 
eospores yellowish-brown, obscurely ridged, 30-40 ps. 
