161 
Peronospora, Corda. 
P. Myosotidis, De Bary. On living leaves of Myosotis- palustris 
and Symphytum tuberosum 
E Viciae, De Bary. On E leaves of various Leguminous 
plants. 
P. Ficariae, Tul. On living leaves of Ranunculus Ficaria. 
P. arborescens, De Bary. On living leaves of Papaver Argemone, 
PF. Wo iem also on various garden forms of poppy. 
e De Bary. On living leaves of Viola canina. and 
y. sylvestris 
P. trifolioram, De Bary. On rm leaves of T'rifolium minor, 
T. medium, and on Lotus corniculatu 
P. grisea, De Bary. On living leaves of Veronica Chamaedrys. 
P. Lamii, De Bary. On living leaves of Lamium rubrum. 
P. effusa, Rabenh. On Chenopodium album. 
P. sordida, Berk. On living leaves of Verbascum Thapsus. 
P. sparsa, Berk. On living leaves of cultivated roses. 
SAPROLEGNIEAE. 
Leptomitus, Agardh. 
L. lacteus, Agardh. Attached to aquatic plants. 
Saprolegnia, Nees. 
S. ferox, Nees. On dead flies in water. 
8. elongata, Mass. On decaying trunk of tree-fern in water. 
(Mass. Brit. Fungi, 211, figs. 47-49.) 
Pythium, Pringsheim. : 
P. de-baryanum, Hesse. Parasitic and saprophytic on various 
“ plants. A destructive parasite to seedling plants, causing what is 
termed ** damping off." 
P. Cystosiphon, Lindst. In living fronds of Wolffia Michelii. 
Dityuchus, Leiig. 
D. monosporus, Leitg. On decaying hyacinth bulbs. 
Diplanes, Leitg. 
D. saprolegnioides, Leitg. On insects in water. 
Achlya, Nees. 
A. polyandra, Hildebr. On insects in water. gue 
13757 L 
