40 DICOTYLEDONOUS PLANTS. 



HAB. Wet grounds. N. Y. to Car. April, May. U.Flmcer* 

 wiiite, odorous, about the size of those of V. lanceolate. Bracte 

 long. This species varies in the form of its leaves from the 

 broad-cordate to the lanceolate. Near New-Brunswick, where 

 what I consider the V. primulafolia is very abundant, it certainly 

 passes into V. lanceolata, with which species I think it will even- 

 tually prove identical. Dr. Bigelow suggests that V. blanda and 

 f r . lanceolata may be the same; but so far as my observation 

 extends, the former is much more constant in its characters than 

 V. primulctfolia. 



1 J . V. blanda Wittd. : leaves broad-cordate, remotely serrate or cre- 

 nate, nearly smooth ; sinus rounded ; sepals ovate, acuminate ; petals 

 ovate, obtuse, nearly beardless ; stigma depressed, acutely margined. 

 HAB. Wet meadows. From lat. 66 N. to Car. April, May. 

 1C. Flowers small, white, streaked with purple, odorous. This 

 species very closely resembles the foreign V. palustris. 



12. I', clandestina Pursh: cespitose ; leaves large, suborbicular, ob- 

 tu.so. thin, nearly smooth, crenate, serrate ; sinus closed, cordate ; 

 stipules ovate, short ; stolons fioriferous ; petals narrow, ovate, beard- 

 less, scarcely longer than the calyx ; flowers often apetalous ; stigma 

 straight, capitate. 



HAB. Shady woods on mountains. Can. and N. S. June Sept. 

 11' Flowers often apetalous, generally concealed in the earth. 

 More nearly allied to V. rotund folia than to V. blanda, but dis- 

 tinct from both. 



** Caulescent. 



13. V. canadenfis Li'/w. . stem erect ; leaves broad-cordate, acumi- 

 nate, serrate, slightly pubescent on the nerves, lower ones on long pe- 

 tioles ; stipules broad-lanceolate, membranaceous, entire ; sepals sub- 

 ulate, lanceolate ; spur very short ; stigma short, pubescent ; capsule 

 oblong, 3-sided, very obtuse. 



HAB. Fields. Throughout Can. and the U. S. May July. 

 If. Stem 12 18 inches high. Flowers large, blue without, 

 pale within. 



14. I', ochrolcuca Schw. : stem assurgent ; leaves alternate, low- 

 er ones round-cordate, crenate-serrate, obtuse, upper ones acuminate ; 

 stipules large, oblong-lanceolate, dentate-ciliate ; sepals subulate-lan- 

 ceolate ; petals obtuse ; the lateral ones and often the lowest profusely 

 bearded ; spur produced, obtuse ; stigma recurved, subpubescent. 

 V. striata Ait. Lc Conte. 



HAB. Swamps. N. S. May. If.. Stem 610 inches. Floic- 

 ers yellowish- white, large. 



15. V. muhlenbergiana De Cand. : stem weak, subprostrate, branch- 

 ed, smooth j lower leaves renifonn- cordate ; upper ones a little acumi- 

 nate, crenate-serrate, nearly smooth ; stipules large, oblong-lanceolate, 

 serrate-ciliate ; sepals linear-lanceolate ; petals obovate, obtuse, the 

 lateral ones bearded ; spur nearly one third the length of the corol ; 



