512 Lake Maxinkuckee, Physical and Biological Survey 



Winter Grape, 362. 

 Winterberry, 354. 

 Winterberry, Virginia, 354. 

 Wintergreen Family, 384. 

 Wintergreen, Chickenweed, 389. 



Creeping, 387. 



Spicy, 387. 



Wire-grass, 233, 237. 

 Witch-grass, 225. 

 Witch Hazel Family, 324. 

 Witch-hazel, 324. 

 Wolffia columbiana, 167, 258. 

 Wolffia, Dotted, 259. 

 Wolffia microscopica, 259. 



punctata, 259. 

 Wolfiella, Florida, 168, 259. 



floridana, 168, 259. 

 Wood Aster, Common Blue, 433. 



Betony, 413. 



Dropseed, 230. 



Nettle, 290. 



Reed-grass, 231. 



Sage, 402. 



Sunflower, Pale-leaved, 440. 



Violet, Southern, 369. 

 Wood-grass, 224, 230. 

 Wood-lettuce, Hairy, 425. 



Red, 425. 



Wood-rush, Common, 262. 

 Wood-sorrel Family, 348. 

 Wood-sorrel, Yellow, 348. 



Yellow Procumbent, 349. 

 Woodland Dropseed, 230. 



Sunflower, 440. 

 Wool-grass, 248. 

 Woolly Sedge, 253. 



Sweet-cicely, 377. 

 Worms, 100. 

 Worms, Gephyrean, 102. 



Thorn-headed, 101. 

 Wormwood, Tall, 445. 



Wild, 445. 



Wreath Golden-rod, 429. 

 Wrinkled-leaved Golden-rod, 430. 



Xanthium americanum, 427. 

 Xanthotype crocataria, 39. 

 Xanthoxalis corniculata, 349. 



stricta, 348. 

 Xyridaceae, 259. 

 Xyris flexuosa, 259. 



Yam Family, 268. 

 Yam-root, Wild, 268. 

 Yard Rush, 261. 

 Yard-grass, 233, 261. 

 Yarrow, 444. 



Yellow Adder's-tongue, 264. 

 Yellow Birch, Southern, 283. 



Catfish, 79, 80. 

 " Foxtail, 227. 



Gentian, 392. 



Lily, Wild, 263. 



Oak, 287. 



Perch, 80, 100. 



Pimpernel, 379. 



Pond Lily, Large, 304. 



Poplar, 305. 



Procumbent Wool-sorrel, 349. 



River, 14, 15, 16, 18, 19, 42, 49, 51, 

 53, 56, 71, 213, 225, 237, 248, 272, 

 282, 283, 289, 301, 306, 308, 314. 



Star-grass, 268. 



Sweet-clover, 340. 



Violet, Downy, 370. 



Violet, Hairy, 370. 



Water-cress, 317. 



Water-crowfoot, 311. 



Wood-sorrel, 348. 

 Yellow-barked Oak, 285. 

 Yellow-eyed Grass Family, 259. 



Slender, 259. 



Yellow-fringed Orchis, 269. 

 Yellow-root, 308. 

 Yellowjacket, 40. 

 Yerba de Tajo, 438. 

 Young, Leonard, 108, 110, 113. 



ypsilophorus, Atax, 61. 



zaleta, Polygyra, 74. 

 Zannichelliaceae, 211. 

 Zanthoxylum americanum, 350. 

 zebra, Ephithemia, 163. 

 Zebra Swallowtail, 38. 

 Ziza aurea, 379. 

 Zizania aquatica, 228. 

 Zizaniopsis miliacea, 228. 

 zonata, Ulthrix, 156. 

 Zonitoides arboreus, 75. 



minusculus, 75. 



niticus, 75. 

 Zoological Park, Washington, D. C., 



201. 

 Zygnema, 154. 



