VIOLACEAE (VIOLET FAMILY) 323 



13. Viola belli difolia Greene, Pitt. 4& 292. 1901. Dwarf and tufted, ap- 

 pearing as if acaulescent, only 4-7 cnfe high, glabrous: leaves more or less 

 succulent, ovate to subcordate, 5-10 mm. long, on rather long petioles, 

 entire or crenate : peduncles numerous, from shorter than the leaves to much 

 surpassing them: sepals oblong-lanceolate, acute: corolla less than 1 cm. long, 

 the spur relatively long, violet-purple above, lighter below with purple veins. 

 (V. demissa Greene, PI. Baker. 3: 10. 1901.) Subalpine; Colorado and 

 Wyoming. 



14. Viola adunca Smith, in Rees Cycl. 37: pi. 63. 1802-20. Glabrous or 

 nearly so, 1-3 dm. high, tardily stoloniferous with cleistogamous flowers: 

 leaves ovate, more or less cordate at base, obscurely crenate, 1-4 cm. long: 

 peduncles usually surpassing the leaves: flowers violet to purple, or almost 

 white: petals 10-15 mm. long, the lateral ones bearded; spur as long as the 

 sepals, rather slender, somewhat curved or hooked. Probably coming into 

 our range from the northwest. 



14a. Viola adunca longipes (Nutt.) Rydb. Mem. N. Y. Bot. Card. 1: 163. 

 1900. Quite glabrous, the long-peduncled, dark purple flowers with a short, 

 straight, thick spur. In mountains from northwestern Colorado through Utah 

 and Wyoming to Montana. 



15. Viola odontophora Rydb. Mem. N. Y. Bot. Card. 1: 164. 1900. The 

 slender woody branches of the caudex from a woody taproot: stems several, 

 slender, with a fine puberulence or nearly glabrous, 5-15 cm. long, quite 

 leafy: leaves crenate, ovate or ovate-trigonous, obtuse or acute, truncate or 

 subcordate at base, sparsely puberulent on both faces or glabrate, 15-25 mm. 

 long; petioles glabrous, slender, 2-5 cm. long: peduncles about equaling or 

 sometime surpassing the leaves: sepals lanceolate, glabrous: petals purple or 

 violet, the lateral ones bearded; the spur half as long as the petals, often 

 somewhat inflated at the tip, occasionally with an inconspicuous lateral 

 tooth. Moist loamy banks; Colorado to Montana. 



16. Viola montaiiensis Rydb. Mem. N. Y. Bot. Card. 1: 203. 1900. Root- 

 stock slender, woody: stems slender, 1-2 dm. high, subscabrous with sparse, 

 short, reflexed hairs: stipules linear-lanceolate: petals blue or violet, with 

 yellowish-white base and spur: capsule ovoid. (V. retroscabra Greene, Pitt. 

 4: 290. 1901; V. inamoena Greene, PI. Baker. 3: 11. 1901.) From Montana 

 to Colorado. 



17. Viola subvestita Greene, Erythea 5: 39. 1897. Finely puberulent 

 throughout, subcaespitose, 4-7 cm. high: leaves broadly ovate, usually sub- 

 cordate, 1-2 cm. long: peduncles scarcely longer than the leaves: flowers 

 small, light blue; spur half as long as the petals. (V. monticola Rydb. Mem. 

 N. Y. Bot. Gard. 1: 264. 1900.) Across the continent through northern 

 Wyoming and Montana. 



18. Viola Rafinesquii Greene, Pitt, 4: 9. 1899. Stems slender, glabrous, 

 6-15 cm. long: leaves oblong-lanceolate to ovate, entire or crenate-dentate, 

 1-2 cm. long; stipules leaf-like, pinnatifid or laciniate: sepals linear, nearly as 

 long as the small, bluish or yellowish-white, sometimes purple-spotted petals. 

 WILD PANSY. Colorado and eastward. 



2. HYBANTHUS Jacq. 



Low herbs or suffruticose plants, with alternate or opposite leaves and 

 solitary, axillary peduncles. Sepals more or less unequal, not auricled. Petals 

 very unequal; the two upper snorter; the lower one very large, with dilated, 

 more or less gibbous or concave claw. Stamens approximate, the anterior 

 ones each furnished with a nectariferous gland at the base. Capsules and 

 seeds much as in Viola. lonidium Vent. 



1. Hybanthus verticillata (Ort.) A. Nels. Somewhat pubescent, stem 

 branched : leaves opposite or more rarely alternate, entire or remotely serru- 

 late; the lower from lanceolate to oblong or pbovate; the upper linear, obtuse 

 or acute, usually 3-4 times as long as the linear stipules: peduncles slender, 



