514 
Mullet, 328 
silver, 328 
Musci, 414 
Mycetophagidae 
305-6 
Myosotis verna, 421, 435 
(associated with oak wilt), 
N 
Naiad, 228 
Najas flexilis, 228; see also Naiad 
Nectria sanguinea, 496 
Nematode (associated with oak wilt), 310, 317, 
320 
Nepeta cataria, 436 
Net, 326, 342, 353-5, 360-1, 364-5 
bait, 334 
buffalo, 333-4 
dip, 331 
fiddler, 333-4 
fyke, 333-4 
hoop, 326-7, 329, 333-7, 340, 346-7, 349-53, 
362, 365 
trammel, 326, 329, 353-65 
trap, 326, 333, 337-8, 347, 353, 365 
wing, 326-7, 333, 336-8, 340, 342-53, 360, 
364-5 
Newlight, 329 
Nitidulidae (associated with oak wilt), 297, 
305-6, 307-8, 310, 319-20 
Northern, 328 
Notemigonus 
crysoleucas, 328; see also Bream, American; 
Roach; Shiner, golden 
crysoleucas auratus, 329; see also Shiner, 
western golden 
Nothoscordum bivalve, 413, 418, 427 
Nyctaginaceae, 418, 428 
Nymph, aquatic insect, 250 
O 
Oak, 397, 406 
black (as timber), 277, 428; (oak wilt of), 
280-1, 311 
bur (oak wilt of), 280, 311; (as timber), 
428 
chinquapin, 428; see also Quercus muhlen- 
bergii 
northern red (as timber), 277 
poison, 432 
post, 428; see also Quercus stellata 
red (oak wilt of), 280-1, 311 
tanbark, 277 
white (as timber), 277, 412, 428; (oak wilt 
of), 280, 311, 318; see also Quercus 
alba 
yellow, 428; see also Quercus muhlenbergii 
Oak wilt, 277-323 
Oat-grass, poverty, 425 
Oenothera 
biennis, 421, 433 
laciniata, 421, 433 
Oleaceae, 435 
Onagraceae, 421, 433 
Onion, wild, 427; see also Allium stellatum 
Onosmodium occidentalis, 404, 421, 435 
Opuntia, 384, 386 
ILtinois NATURAL History SurvEY BULLETIN 
Volume 26 
humifusa, 433 
rafinesquit, 379, 383, 387-8, 421, 433 
Orange, osage, 428 
Orchid, 412 
Orchidaceae, 418, 427 
Orthoperidae (associated with oak wilt), 
305-6, 308 (see Emendations, refer- 
ence for p. 308) 
Ostomidae (associated with oak wilt), 305-6 
Ostrya virginiana, 413, 428 
Oxalidaceae, 420, 431 
Oxalis 
stricta, 420, 431 
violacea, 392-3, 420, 431 
P 
Paddlefish, 328-9, 332-3, 340 
Pandeleteius hilaris (associated with oak 
wilt), 305-6 
Panicum, 425; see also Panicum 
Panicum 
capillare, 417, 425 
dichotomum, 417, 425 
huachucae, 417, 425 
lanuginosum var. fasciculatum, 425 
linearifolium, 417, 425 
oligosanthes var. scribnerianum, 425 
scribnerianum, 388-9, 392-3, 417, 425 
sphaerocarpon, 417, 425 
tennesseense, 417, 425 
virgatum, 397, 417, 425 
Pansy 
field, 433; see also Viola rafinesquii 
wild, 433; see also Viola rafinesquii 
Parcoblatta (associated with oak wilt), 305-6 
Paromalus bistriatus (associated with oak 
wilt), 305-6 
Partridge-pea, 430; see also Cassia fasciculata 
Paspalum stramineum, 417, 425 
Pear, prickly, 433; see also Opuntia rafinesquit 
Pedicularis canadensis, 437 
Pellaea atropurpurea, 415-6 
Pencil-flower, 431; see also Stylosanthes bi- 
flora 
Penicillium (associated with oak wilt), 285 
sp., 489 
Pennyroyal 
American, 436 
false, 436; see also Isanthus brachiatus 
rough, 436; see also Hedeoma hispida 
Penstemon, 437; see also Penstemon pallidus 
Penstemon pallidus, 392-3, 422, 437, 442 
Peppergrass 
common, 429; see also Lepidium virginicum 
field, 429 
Perch, 329 
black, 329 
grunting, 329 
white, 329 
Persimmon, 435 
Petalostemum 
candidum, 393, 398, 419, 431, 443 
purpureum, 378-80, 383, 388-9, 392-3, 402, 
419, 431, 442 
Philonthus laetulus (associated with oak wilt), 
305-6 
