394 Wirson: NortH AMERICAN PERONOSPORALES’ 
Peronospora simplex Peck, Ann. Rep. N. Y. State Mus. Nat. Hist. 
Bf 4521879. ! 
Flasmopara 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 yp, apically much 
enlarged, 17-25 yw, lateral branches 5-20, about 6-10x 2 #; 
conidia ovate, 20-36 x 10-202; odspore light yellowish-brown, 
40-50 4; epispore conspicuously ridged. 
On CARDUACEAE: 
Aster Novae-Angliae L., Indiana, Wilson ; Wisconsin, 7re- 
lease (N. Am. Fungi 7405). 
Aster oblongifolius Nutt., Nebraska, * Bates (Fungi Columb. 
1950). 
peas philadelphicus 1.., Louisiana, Langlois 1669. 
Erigeron ramosus (Walt.) B. S. P., Illinois, Zar/e, Waite, 
Leptilon canadense (L.,) Britton, Missouri, *Pammel. 
Solidago rigida L., Mlinois. * Seymour (N. Am. Fungi 
74056, Fungi Europ. 3277). 
Reported also from our limits on Aster sagittifolius Willd. and 
Rudbeckia fulgida Ait. 
_ Type Locarity: 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: p/. 4; Rabenh. Krypt. Fl. ed. 
2. 1':424. f.68; 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. 11: 74: 1889. 
- Plasmopara Kellermanii Swingle ; Sacc. Syll. Fung. 9: 342. 1891- 
. 3 Hypophyllous, forming angular discolored patches which often 
cover a large portion of the leaf; conidiophores arising from the 
__ Stomata, singly or in groups, very short, hyaline, 25-100 x 8-10/5 
_ apically much enlarged, about 15-20; lateral branches 4-7 , 
‘Short, 5-8 x 24; conidia globose-ovate, 20-22 x 18-20/5 
-©ospores yellowish-brown, obscurely ridged, 30-40 /. 
