452 



VIOLACEAE. 



[VOL. II. 



19. Viola hastata Michx. Halberd- 

 leaved Yellow Violet. (Fig. 2502. ) 



Viola hastata Michx. Fl. Bor. Am. a: 149. 1803. 



Glabrous or nearly so, 5 / -i2 / high; stem 

 simple, erect; rootstock long, creeping. 

 Stem-leaves mainly near the summit, del- 

 toid-lanceolate, hastate or rhombic-ovate, 

 sometimes truncate at the base, 1'-$%' 

 long, ^'-2' wide; basal leaves (when pres- 

 ent) more cordate or dilated at the base, 

 larger, all irregularly dentate or repand; 

 stipules small, ovate, acute, sparingly 

 toothed; petals 3 // -6 // long, yellow, the 

 lateral ones slightly bearded; sepals acute, 

 linear-lanceolate, acute; spur very short; 

 capsule glabrous, 4 // -5 // long. 



In woods, in mountainous or hilly districts, 

 Pennsylvania to Ohio, south to Florida and 

 Alabama. Ascends to 4500 ft. in Virginia. 

 April-May. 



18. Viola Nuttallii Pursh. 

 Nuttall's Violet. (Fig. 2501.) 

 V, Nuttallii Pursli, Fl. Am. Sept. 174. 1814. 



Somewhat pubescent, or nearly gla- 

 brous; at first nearly acaulescent, later 

 becoming tufted and with stems erect 

 or ascending, 2' -5' high; rootstocks 

 thick. Blades of the leaves lanceolate 

 or ovate-lanceolate, thickish, I'-tf 

 long, y-t'-i' wide, irregularly crenate- 

 dentate, or entire, tapering into mar- 

 gined petioles 2'-6 / long; peduncles 

 about equalling the leaves, or shorter; 

 sepals lanceolate or linear, attenuate, 

 3"-6" long; petals yellow, 4"-8" 

 long, slightly bearded, or beardless; 

 stigma bearded, not beaked; capsule 

 subglobose or oval, about 3" long. 



On prairies, Manitoba to Montana, 

 Kansas and Arizona. May. 



20. Viola pubescens Ait. Hairy 

 Yellow Violet. (Fig. 2503.) 



Viola pubescens Ait. Hort. Kew. 3: 290. 1789. 



Villous or pubescent, stems usually solitary, 

 simple, erect, mostly stout, naked below, 5'- 

 20' high. Basal leaves long-petioled, usually 

 wanting at flowering time; uppermost peti- 

 oles shorter than the blades; blades broadly 

 ovate, or orbicular, or reniform, i ^'-5^' wide 

 when mature, sometimes attenuate into the 

 petiole, generally pointed, crenate-dentate; 

 stipules ovate or ovate-lanceolate, entire, or 

 slightly toothed; sepals oblong-lanceolate; 

 petals bright yellow, 4 // -6 // long, purple- 

 veined; spur short; capsule white-tomentose 

 or glabrous, oblong or oval, s"-8" long. 



In dry woods, Quebec to Minnesota and South 

 Dakota, south to Georgia and Iowa. April- 

 May. 



