PLANTS AND FERNS^ 89 



V, puiescens, Ph. w. J. Tj 3 — 6 ft. Bushy fields. 



V. acerifolium^ Linn. Dockmackie. lo. J. ^2 3 — G ft. Dry woods. 



ViciA saliva, Linn. Vetch, h-p. J. 1 — 2 ft. Fields. 



V. craccct, Linn. b. .Ju. 2/ 12 — 18 i. Meadows. 



Viola cucullata, Ait. Blue Violet. Z». Ap. ^ 4 — 8 i. Meadows. 



V. palma/a, Linn. Z>. M. 11 4 — Si. Dr. Bigelow very properly 



considers this a mere variety of the preceding polymorphous 



species. 

 Y . pedata, Linn. Bird-foot Violet, h. M. ^ 3 — 6 i. Rocky hills. 

 V. ovata, N. b. Ap, 7/ 2 — 4 i. Dry woods. 

 V. blanda, Willd. lo. p. Ap. % 2 — 4 i. Wet meadows. 

 V. striata, Ait. i/-?i». J. 2/ 6 — 10 i. Wet meadows. 

 V. canadensis, Linn. lo-h. M. 2/ 12 — 18 i. Damp woods. 

 V. mulilenbergiana, Dec. h. M. j^ 6 — 8 i. Low grounds. 

 V. jawSescens, Ait. Yellow Violet, y. Ap. 21 6 — 12 i. Woods. 

 ViscuM d/c7io/owi7<m, Bart. Misletoe. ^-i^. J. h Parasitic, on trees. 

 ViTis aestivalis, Mx. Summer Grape, g-iv. J. h Vine. Woods. 

 V. riparia, Mx. Odoriferous Grape, g-zo. M. ^2 Vine. Banks of 



streams. 

 V. labrusca, Linn. Fox Grape, g-iv. J. h Vine. Woods. 

 WiNDsoRiA;jo«/b?-TOis, N. Red Top. Ju. 2/ 3 — 5 ft. Wet meadows. 

 Wistaria speciosa, N. b. p. Ju. If. Twining. Cultivated. 

 WooDsiA ilverisis, Br. J. 2/ 4 — 6 i. Rocky banks. Fern. 

 W. j9err//i?a?ia, Hook, and Grev. Ju. ^ 8 — 12 i. Rocks. Hypo- 



pELTis obtiisa, Tor. 

 Xanthium strumarium, Linn. Clot Burr. Au. 2 — 3 ft. Shores 



of streams. 

 X. spinosum, Linn. Ju. 1 — 2 ft. Road sides. 

 Xanthos-Ylvm fraxineu7n, Willd. Prickly Ash. g-w. M. ^ 8 — 12 



ft. Low woods. 

 Xyris caroliniana, Wr. Yellow-eyed grass, y. Ju. 2/ 9—18 i. 



Swamps, 

 Y ucc K filamentosa, Linn. t^. Au. 21 2 — 5 ft. Eastern Shore. 

 Zapania nodijlora, Lk. iv. Ju. ^ Creeping. Sandy shores of 



Potomac. 

 Zea mays, Linn. Indian Corn. Ju. Cultivated. 

 Zizania aquaiica, Lamb, Wild Rice. Ju. 4 — 8 ft. Marshes. 

 ZiziA aurea, Koch. y. J. 2/ 1 — 2 ft. Meadows. Smyrnium 



aureum, Linn. 

 Z. integerrima, Dec. ?/. J. 2/ 12 — 18 i. Woods. SisoN infe- 



gerrimus, Sp. 

 Z. cordata, Koch. y. J. 2/ 12 — 18 i. Meadows. Smyrnium cor- 



datum, Wr. 

 12 



