Additional Hosts and Notes. 
155 
6. Albugo amaranth!, (Schw.) O. Kuntze. ( Cystopus bliti, 
Biv.-Prelim. List.) 
On Acnida tuberculata, Moq. Racine. 
Since the Preliminary List was written the genus Peronospora 
has been divided, which changes the designation of some of the 
species therein enumerated. 
9. Plasmopara viticola, (B. & C.) Berl. and DeToni. (Per¬ 
onospora, Prelim. List.) 
10. Plasmopara halstedii, (Farl.) Berl. and DeToni. ( Per¬ 
onospora, Prelim. List.) Also on Bidens chrys- 
ant/iemoides, Michx. Racine. 
11. Plasmopara obducens, Schroeter. ( Peronospora , Prelim. 
List.) 
12. Plasmopara geranii, (Pk.) Berl. and DeToni. (Peronos¬ 
pora, Prelim. List.) 
13. Plasmopara ENTOSPORA,(Roze and Cornu) Berl. and PeToni. 
( Peronospora , Prelim. List.) 
On Aster sagittifolius , Willd. Racine. 
14. Plasmopara pygm^ea, (Ung.) Schroet. (Peronospora, Pre¬ 
lim. List.) 
On Hepatica acutiloba, DC. Racine. 
15. Bremia lactuc^e, Regel (Peronospora gangli for mis, (Berk.) 
Prelim. List.) 
16. Peronospora parasitica, (Pers.) Tul. 
On Dentaria laciniata, Muhl, and Car damme 
rhomboidea, DC., Racine. 
17. Peronospora potentill^:, D By. 
On Geum album, G-mel. and Agrimonia Eupatoria, 
L., Racine. Common and abundant on the former 
host. Not seen on Agrimonia until 1892, when 
it was rather abundant in one station, though 
less so on Geum than in previous years. 
21. Peronospora alta, Fckl. 
On Plantago Rugelii, Dcsne., Racine. 
