Lake Maxinkuckee, Physical and Biological Survey .">oi 



Service-berry, 335. 

 Sessile-leaved Tick-trefoil, 342. 

 sessilifolia, Meibomia, 342. 

 Seven-angled Pipewort, 184, 259. 

 Sewickley, Pa., 128, 349, 444. 

 Shag-bark, 273, 275. 

 Sharp-fruited Rush, 262. 

 Sharp-lobed Liverwort, 311. 

 Sharp-toothed Golden-rod, 431. 

 Sheathed Rush-grass, 231. 

 Sheep-berry, 420. 

 Sheep-sorrel, 348. 

 Shell-bark Hickory, 273. 

 Shepherd's-purse, 317. 

 Shield-fern, Crested, 201. 



Marsh, 201. 



Spinulose, 202. 

 shimekii, Ancylus, 73. 

 Shin-leaf, 384. 

 Shining Bedstraw, 420. 



Pondweed, 214. 



Thorn, 335. 



Willow, 279. 

 Shoestrings, 341. 

 Shooting Star, 389. 

 Short-fruited Rush, 262. 

 Showy Goldren-rod, 430. 



Ladies'-slipper, 269. 



Orchis, 269. 



Tick-trefoil, 343. 

 Shrews, 100. 

 Shrimp, Freshwater, 78. 

 Shrubby Bittersweet, 355. 

 sicculus, Labidesthes, 100. 

 Sickle-pod, 319. 

 Sida crystallina, 107. 



spinosa, 365. 



Prickly, 365. 

 signatum, Enallagma, 23. 

 Silene antirrhina, 301. 



latifolia, 300. 



stellata, 300. 

 Silkweed, 394. 

 Silky Cornel, 382. 



Willow, 280. 

 Silphium integrifolium, 437. 



terebinthinaceum, 437. 

 Silver Maple, 356. 

 Silver-leaf Poplar, 275. 

 Silvery Spleenwort, 203. 

 Simaroubaceae, 350. 



simile, Sphaerium, 7". 

 Simms, E. G., 194. 

 Simple-stemmed Bur-reed, 211. 

 simplex, Sparganium, 211. 



Valvata sincera, 73. 

 simplicicollis, Erythemis, 15. 

 Simpson, Chas. T., 63. 

 Sinapis arvensis, 321. 

 sincera, simplex, Valvata, 7.;. 

 Sisymbrium nasturtium-aquaticum, 



188, 318. 

 Sisyrinchium angustifolium, 2fi9. 

 Sium cicutaefolium, 380. 

 Skipjack, 100. 

 Skullcap, Mad-dog, 402. 



Marsh, 402. 



Speedwell, 411. 

 Skunk Cabbage, 255. 

 Sky-blue Aster, 433. 

 Sleepy Catchfly, 301. 

 Slender Bush-clover, 343. 



Cotton-grass, 243. 



Crab-grass, 224. 



Cyperus, 241. 



Fescue-grass, 238. 



Fimbristylis, 243. 



Finger-grass, 224. 



Forked Chickweed, 298. 



Fragrant Golden-rod, 432. 



Knotweed, 293. 



Naias, 184, 218. 



Nettle, 290. 



Pigweed, 296. 



Rush, 261. 



Wild Nettle, 290. 



Yellow-eyed Glass, 2-~>!». 

 Slippery Elm, 288. 

 Sloughs of the Mississippi, 78. 

 Small Bedstraw, 41!). 



Bur-grass, 227. 



Coral-root, 271. 



Pondweed, 170, 215. 



Sundrops, 373. 



Tufted Love-grass, 234. 



White Aster, 134. 



Wild Bean, 348. 

 Small-flowered Agalinis, 412. 

 Small-fruited Hickory, 254, 274. 

 Small - leaved Tick-trefoil, Smooth. 



343. 

 Small-mouthed Black Bass, 80. 



