471 
Omphalia, 323 
corticola, 147. 
Omphalina bibula var. citricolor, 186. 
Oomycetes, 136,137,138,184, 389, 390, 395, 426. 
Oospora metcbnikowi, 280. 
ovorum. 191. 
rutilans, 425. 
scabies, n. s., 280. 406,409. 
versicolor, 322. 
Ophionectria everbartii, 320. 
Ostropa cinerea, 182. 
Ovini mylittse, syn., 425. 
Ovularia maclurse, 320. 
Ozonium auricomum, 298,410. 
P. 
Pacliybasium kainatum, 330. 
Packyma cocos, 323,324. 
Malacense, 324. 
Passeriniella, 425. 
dickora, 425. 
Patellaria fenestrata, 329. 
Patellaris, 190. 
Paxillus involutus, 186. 
subinvolutus, 427. 
Penicillium duclauxi, 189. 
glaucum, 159,179, 317,318. 
Peniopkora, 182,427. 
Perickaenaconfusa, 193. 
Peridermium, 398. 
cerebrum, 44. 
decolorans, 147. 
pini, 398,413,428. 
strobi, 401. 
Perisporiaeeae, 188, 322, 392, 396, 428. 
Perouospora, 57,120,164,165, 166, 169,180, 373, 417, 
421,426. 
adinis, 144. 
alsinearum, 121. 
alta, 124. 
arborescens, 144. 
arenarim, 120. 
var. macrospora, 121. 
arthuri, 121. 
asperuginis, 127. 
australis, 118. 
calotkeca, 61,121,144. 
celtidis, 105,106,108,125, 323. 
cklorse, 144. 
elaytoniae, 130. 
corydalis, 122. 
cubensis. 62,106,125,184. 
cynoglossi, 126,127,128, 322. 
var. ecliinospermi, syn., 322. 
dipsaci, 123. 
eckinospermi, 126,127, 128, 129, 322. 
effusa, 57, 108, 124, 184. 
euphorbia}, 61, 125. 
licarise, 123, 143. 
gangliformis, 158, 298. 
geranii, 116. 
gonolobi, 49, 119, 320. 
gramiuicola, 161. 
grisea, 123. 
halstedii, 118. 
hydropkyili, 107, 109, 123, 323. 
23192—No. 4-10 
Perouospora—Continued, 
kyoscyami, 162, 298, 407. 
impatientis, 181. 
infestans, syn., 162, 168. 
larnii, 124. 
leptosperma, 144. 
lopkantki, 123. 
myosotidis, 121, 127, 143, 144. 
nicotianm, 184. 
obducens, 117. 
oxybapki, 123. 
parasitica, 51, 56, 122,143, 144, 184, 300. 
potentillae, 122,184. 
pygmasa, 179. 
rubi, 105, 130. 
rumicis, 124. 
sckacktii, 173, 416. 
sckleideni, 143,144, 407. 
sordida, 130. 
sparsa, 105,130. 
trifoliarum, 161. 
viciae, 121. 
violae, 123. 
viticola, 54, 59, 165, 168, 174, 180, 308, 309, 312, 
314, 410. 
Peronospore®, 51, 61, 109, 118, 121, 126, 127, 130. 
136, 139, 140, 141, 143, 144 179, 182, 184, 
270, 322, 395, 426. 
Peronosporites antiquarius, 148,270. 
Pestalozzia aquatica, 189. 
artemisiae, 183. 
inquinans, 320. 
insidens, 63. 
lateripes, 133, 319. 
nervalis, 133. 
sabinae, 321. 
Pestalozziella andersonii, 54. 
Peziza, 165, 190, 397, 408. 426, 429. 
abrata, 189. 
coronaria, 182. 
edulis, 322. 
ochracea, 176. 
sclerotiorum, 167, 300. 
venosa, 176. 
willkommii, 166, 304,397. 
Pezizaceie. 320. 
Pezizella dilutelloides, 331. 
Pkacidium, 190. 
jacobceae, 321. 
medicaginis, 161. 
polygoni, 425. 
pusillum, 330, 331. 
Pkaeodiscula celottii, 330. 
; Pkalloideae, 177, 394, 395, 396. 
Pkallus impudicus, 185. 324. 
Pkarcidia marina, 428. 
I Phialia, 190. 
macrospora, 425. 
Pklebia, 185. 
deglubens, 185. 
spilomea, 185. 
Pkleospora reticulata, 181. 
Phlyctsena, 277. 
andersoni, n. 277. 
Plioliota erebia, 177. 
mollicula, 148, 
