67 



SECOND LIST OF ERYSIPHE/E LEV. (WHITE 

 MILDEWS) OF CUYAHOGA AND OTHER 

 COUNTIES OF NORTHERN OHIO, TOGETHER 

 WITH THE NAMES OF THEIR HOST-PLANTS. 



EDO CLAASSEN. 



1. Erysiphe cichoracearum, D. C, Aster cordifolius, A. macrophyllus, 



Eupatorium purpureum, Helianthus strumosus, Xanthium cana- 

 dense, Cuyalioga. 



2. Erysiphe communis, (Wallr) Fr.,' Ranunculus acris, Cuyahoga, Lake. 



3. Erysiphe galeopsidis, D. C, Stachys palustris, Cuyahoga. 



4. Microsph;i>ra alni. (D. C), Winter, Betula lenta, Cuyahoga. Geauga, 



Lake: Castanea dentata, (Marsh), Geauga; Cornus alternifolia, 

 Cuyahoga, Geauga; Lonicera glauca, Geauga, Summit: Sambucus 

 canadensis, Geauga, Summit. 



5. Microsphiera diffusa, C. Sz, P., Apios taberosa, Meibomia canaden- 



sis, M. canescens. Lake. 



6. Microsphfera quercina, (Schw), Burrill, Ouercus alba, Summit, Cuy- 



ahoga, Geauga; O. prinus, Geauga; O. rubra, Summit. 



7. Microsplw'ra Ravenelii, Berk., Menispermum canadense, Lake. 



8. " Russellii, Clinton, Gxalis stricta, Medina. 



9. " vaccinii, C. & P., Gaylussacia resinosa, Summit: Vac- 

 cinium vacillans, CJeauga. Summit, Cuyahoga. 



10. Phyllactinia suffulta, (Rel.) Sacc, Magnolia acuminata. Cuyahoga. 



11. Podosphiera biuncinata, Hamamelis virginiana, Geauga. 



12. " oxyacantha', (D. C.) De Bary, Crat;i'gus crusgalli, Cuy- 

 ahoga; C. tomentosa, Summit: Prunus cerasus, Summit, Cuyahoga. 



13. Spha-rotheca Castagnei, Lev., Bidens frondosa, Lake; Erechtites 



hieraciifolia, Medina, Geauga, Summit; Pedicularis lanceolata, 

 Lake. • 



14. Spha^rotheca humuli, (D. C.) Burrill, Agrimonia striata, Medina, 



Cuyahoga, 



15. Spha>rotheca pruinosa, C. & P., Rhus glabra, Cuyahoga. 



16. Uncinula circinata, C. & P., Acer saccharinum, Summit; A. sac- 



charum, Lake. 



17. Uncinula necator. (Schw.) Burr., Vitis Labrusca, Cuyahoga. 



18. " salicis, (L). C.) Winter, Populus monilifera, Cuyahoga; 

 Salix cordata, Lake; S. discolor, Medina. 



