VIOLACE^. 39 



olata may be the same. This seems also to be the opinion of Dr. Darlington ; 

 but so far as my observation extends the former is much more constant in its 

 characters than V. primulcefolia. Primrose-leaved Violet. 



12. V. blanda WilLd : leaves broad-cordate, remotely serrate or crenate, 

 nearly smooth ; sinus rounded ; sepals ovate, acuminate ; petals ovate, ob- 

 tuse, nearly beardless ; stigma depressed, acutely margined. 

 Wet meadows. From lat. 66° N. to Car. W^to Miss. April, May. %. 



Leaves 1 — 2 inches in diameter, flat and thin. Flowers small, white, streaked 

 with purple, odorous. This species very closely resembles the foreien V. pahis- 

 tris. ■ White Violet. 



13. V. clandestina Pursh : cespitose ; leaves large, suborbicular, obtuse, 

 thin, nearly smooth, crenate-serrate ; sinus closed, cordate ; stipules ovate, 

 short ; stolons floriferous ; petals narrow, ovate, beardless, scarcely longer 

 than the calyx ; flowers often apetalous ; stigma straight, capitate. 



Shady woods, on mountains. Can. and N. S. June — Sept. %. — Flowers 

 often apetalous, generally concealed in the earth. More nearly allied to V. ro- 

 tundifdia than to V. blanda ;hiit, in my opinion, distmct from both. 



Hidden-flowered Violet. 

 ** Caulescent. 



14. V. Canadensis Linn.: stem erect; leaves broad-cordate, acuminate, 

 serrate, slightly pubescent on the nerves, lower ones on long petioles ; stip- 

 ules broad-lanceolate, membranaceous, entire ; sepals subulate, lanceolate ; 

 spur very short ; stigma short, pubescent ; capsule somewhat globose, pu- 

 bescent. 



Shady woods. Hudson's Bay to Car. W. to the Pacific. May — July. %. — 

 Stem 9 — 18 inches high, usually simple. Flowers large, blue without, paler 

 within. Canadian Violet. 



15. V. ochroleuca Schw. : stem assurgent ; leaves alternate, lower ones 

 round-cordate, crenate-serrate, obtuse, upper ones acuminate ; stipules large, 

 oblong-lanceolate, dentate-ciliate ; sepals subulate-lanceolate ; petals ob- 

 tuse, the lateral ones and often the lowest profusely bearded ; spur pro- 

 duced, obtuse ; stigma recurved, subpubescent. V. striata Ait. Le Conte. 

 Torr. <^ Gr. 



Swamps. Can. to Geor. Le Conte : rare. May. '2|.. — Stem 6 — 10 inches 

 high, Floxvers yellowish-white, large. Ochroleucotis Violet. 



16. V. Miihl£nbergii Torr. : stem weak, subprostrate, branched, smooth; 

 lower leaves reniform-cordate ; upper ones a little acuminate, crenate-ser- 

 rate, 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 corolla ; stigma rostrate. V. uligi?iosa and 

 asarifolia Muhl. 



Swamps. Labrador to Gteor. W. to the Rocky Mountains. May. %. — Stem 

 6 — 10 inches hi^h, branched. Flowers middle-sized, pale purplish. Very nearly 

 allied to V' canina of Europe. Muhlenberg's Violet. 



17. V. rostrata Muhl. : stem diffuse, erect ; leaves smooth, cordate, acute, 

 serrate ; sinus open ; stipules large, lanceolate, serrate-ciliate ; peduncles 

 filiform, longer than the leaves ; petals obovate, all beardless ; spur longer 

 than the corolla. 



Rocky hills. Can. to Virg. W. to Ken. May. %.—St^ 6—8 inches high. 



