PLANTS AND FERNS. 77 



"Nastvrtivm. palusire, Dec. y. Ju. © 12 — 18 i. Wet ditches. 



N. amphibium, Br. y. J. 2^ 1 — 2 ft. Wet ditches. 



I^ELUMBiuM Ititeum, Willd? Water Chinquepin. ij-w. Ju. ^ Water 



Eastern shore, v. s. 

 Nemopanthes canadensis^ Dec. g-y. Ap. \ 3 — 6 ft. Rocky 



woods. 

 Neottia ^raciZis, B\v. lo. Ju. 2/ 8 — 12i. Dry woods. 

 N. cernua, Willd. g-io. Ju. 6 — 18 i. Moist grounds. 

 Nepeta cataria., Linn. Catnip, r-w. J. ^ 2 — 3 ft. Old fields. 

 "NiCAKDRA. physaloides,Ga.ert. h. Ju. 2 — 3 ft. Naturalized. 

 NicoTiANA tabacum, Linn. Tobacco, w. r. Ju. Cultivated. 

 N. rustica, Linn. Au. © Cultivated. 

 N. TJanicw/aia, Linn. Au. Cultivated. 

 NuPHAR advena, Ait. Yellow Water Lily. y. Ju. ^ Water. 

 NvMPHiEA odorata^i Ait. White Pond Lily. 7<j. J. 2/ Water. 

 Nyssa aqualica, Linn. Sour Gum. M. Jz 30 — 50 ft. Swamps. 



Wood difficult to split. 

 N. muUiJlora, Wang. Swamp Hornbeam, g. M. l2 30 — 50 ft. 



Swamps. 

 Oeolaria virginica, Linn. Penny-wort. r. Ap. ^ 4 — 6 i. Sunny 



banks. 

 (Enothera biennis, Linn. Scabish. y. J. S 3 — 4 ft. Fields. 

 CE. muricata, Murr. y. Ju. S 1 — 2 ft. Dry fields. 

 CE. /jory/^ora, Linn. y. Ju. S 1 — 3 ft. Dry fields. 

 (E.fruticoxa, Linn. y. Ju. J^ 12 — ISi. Rocky open woods. 

 (E. hybrida, Mx. 2^. Ju. 1 — 2 ft. Old fields and woods. 

 (E.fraseri^ Ph. y. Ju. TJ. 1 — 2 ft. Banks and grassy woods. 

 (E. pu7nila,h'inn. y. Ju. 2/. 8 — 15 i. Dry field. The (E pusilla, 



Mx. and CE. chrysantha, Mx. are undoubtedly mere varieties of this 



species. 

 Onoclea senstJi7is, Linn. Ju. 21 12 — 18 i. Fern. Moist woods. 

 OsosMODivM hispidum,Mx. lo. J. ^ 1 — 2 ft. Dry woods. 

 0.moUe,Mx. y-io. Ji\. 21 1 — 2 ft. Dry woods. 

 Orchis spec^ai(7ts, Linn. p. M. 11 3 — 6 i. Low woods. 

 Origanum vulgare, Linn. Wild Marjoram, r. Ju. 2/ 1 — 2 ft. 



Woods. 

 Orobanche unijlora, Linn. p-w. J. 21 3—6 i. A leafless parasite. 



Rich woods. 

 Orontium aquaticum, Linn. Golden Club. y. M. 21 12 — 18 i. 



Shallow water. 

 Oryza sativa, Linn. Rice. Au. © Cultivated on the Eastern 



shore. 



