Lake Maxinkuckee, Physical and Biological Survey 503 



Sphaerium tumidulum, 73. 



walkeri, 73. 



Sphenopholis pallens, 236. 

 spicata, Danthonia, 233. 



Lacinaria, 429. 



Lactuca, 425. 



Mentha, 406. 



spicatum, Myriophyllum, 196, 374, 375. 

 Spice-bush, 316. 

 Spicy Wintergreen, 387. 

 Spiderwort Family, 260. 

 Spiderwort, Reflexed, 260. 

 Spike, 53. 

 Spike-rush, Angled, 188, 241. 



Blunt, 242. 



Bright Green, 242. 



Creeping, 189, 242. 



Knotted, 188, 241. 



Needle, 189, 242. 

 Spiked Lobelia, 423. 



Water-milfoil, 196, 374. 

 Spikenard, American, 376. 



False, 265. 



spinifer, Ilyocryptus, 107. 

 spinirostris, Cambarus immunis, 86. 

 spinosa, Sida, 365. 

 spinulosa, Dryopteris, 202. 

 Spinulose, Shield-fern, 202. 

 - Spiny Sow-thistle, 424. 

 Spiraea alba, 329. 



tomentosa, 330. 

 spiralis, Vallisneria, 171, 222. 

 Spirodela polyrhiza, 166, 256. 

 Spirogyra condensata, 153. 



majuscula, 154. 



mirabile, 154. 



Spirulina jenneri, 143, 148. 

 spithamaeus, Convolvulus, 397. 

 Spleen Amaranth, 296. 

 Spleenwort, Narrow-leaved, 203. 



Silvery, 203. 



splendidulum, Pisidium, 74. 

 Sponges, 103. 

 Sporobolus asper, 231. 



vaginaeflorus, 231. 

 Spotted St. John's-wort, 366. 

 Spurge, 351. 

 Spurge, Upright, 351. 

 Touch-me-not, 349. 

 Spreading Dogbane, 392. 

 Spreading Spurge, Hairy, 351. 



Spring Beauty, 299. 



Cress, 320. 



Harbinger of, 279. 



Scorpion-grass, 400. 

 Spring-tails, 7. 

 Spurge Family, 351. 

 Spurge, Blooming, 352. 



Blotched, 351. 



Cypress, 352. 



Flowering, 352. 



Hairy Spreading, 351. 



Large Spotted, 351. 



Spotted, 351. 



Toothed, 352. 



Upright Spotted, 351. 

 Square-stemmed Monkey-flower, 410. 

 Squawfoot, 60. 

 Squaw-root, 415. 

 Squirrel-tail Grass, 238. 

 Stachys palustris, 404. 

 Staff-tree Family, 355. 

 Stag-beetles, 34. 

 Staghorn Sumac, 353. 

 stagnalis, Anabsena, 148. 



Glossiphonia, 90. 

 stagnina, Aphanotheca, 142. 

 stamineum, Sphserium, 73. 

 Staphyleaceae, 356. 

 Staphylea trifolia, 356. 

 Star, Shooting, 389. 

 Star-of-Bethlehem, 264. 

 Star-flower, 389. 



Star-flowered Solomon's Seal, 265. 

 Star-grass, 164. 



Water, 261. 



Yellow, 268. 

 Starry Campion, 300. 

 Staurastrum brebissonii, 152. 

 Steeple-bush, 330. 

 Steironema ciliatum, 388. 



quadrilorum, 388. 

 stellata, Silene, 300. 



Vagnera, 265. 

 Stellate Sedge, 249. 

 Stenelmis sulcatus, 34, 46. 

 Stenophyllus capillaris, 243. 

 Stentor cceruleus, 97. 

 Stevenson, Robert Louis, 235. 

 Stick-tight, 442. 

 Stickleback, 76. 

 Stiff Gentian, 391. 



