640 FLORA. 



blue or purple, rarely white, 12-16 mm. broad; petals twice as long as the slender 

 5-pur, the lateral ones slightly bearded; capsule glabrous, 4-6 mm. long; cleistog- 

 amous flowers short-peduncled, produced late in the season. Moist soil, Lab. to 

 Minn., N. Car. and Ky. March-May. 



39. Viola arenaria DC. SAND VIOLET. (I. F. f. 2508.) Stems slender, 

 tufted, decumbent or ascending, their surface and that of the long-petioled leaves 

 finely puberulent; blades ovate, usually obtuse at apex, truncate or subcordate at 

 base, 1-2.5 cm. long, the margins crenulate; stipules laciniate; sepals linear, acu- 

 minate; flowers violet-purple, 10-14 mm. wide; spur 6 mm. long, blunt; capsule 

 6-8 mm. long. Sandy soil, Me. to Sask. and S. Dak. Also in Europe. May-June. 



40. Viola multicaulis (T. & G.) Britton. PROSTRATE BLUE VIOLET, d. F. 

 f. 2509.) Stems slender, tufted, 5-20 cm. long; leaves numerous, slender-petioled, 

 finely puberulent; blades orbicular, crenulate, cordate with a narrow sinus, often 

 mottled or dark-veined, 2.5-4 cm. wide; stipules laciniate; peduncles exceeding 

 the leaves; flowers violet-blue, 10-14 mm - wide; petals bearded; sepals lanceolate, 

 acuminate; capsule glabrous, 6-8 mm. long; cleistogamous flowers borne on the 

 shoots of late summer. Woods, Ky. to Fla. and Tex. Feb. -July. 



41. Viola rostrata Pursh. LONG-SPURRED VIOLET. (I. F. f. 2510.) Stem? 

 numerous, erect; leaves glabrous, slender-petioled, the blades cordate -ovate or the 

 lower reniform, acuminate, serrate, 1-4 cm. long; stipules laciniate, ciliate; flowers 

 pale violet, darker veined, 1.5-2 cm. wide; sepals linear-lanceolate: petals beard- 

 less; capsule glabrous, 8 mm. long. Rocky woods, Quebec to Mich., south in the 

 mountains to Ga. June-July. 



42. Viola tricolor L. PANSY. HEART'S-EASE. (I. F. f. 2511.) Plant usually 

 glabrous; stem branched, ascending, 1-3 dm. high; upper leaves oval-lanceolate, 

 crenate-dentate, 1-2.5 cm - l n g> tne lower broader, often cordate; stipules large, 

 foliaceous, laciniate or pinnatifid; flowers variously marked with yellow, purple or 

 white, 1.6-2.5 cm - broad; petals veined, the lower one largest; capsule angled, 

 6-10 mm. long. Waste places, sparingly escaped from gardens. May-July. 



43. Viola Rafinesquii Greene. FIELD PANSY. (I. F. f. 2512.) Stems very 

 slender, glabrous, 7-23 cm. high. Leaves ovate to oblong-lanceolate, obscurely 

 crenate-dentate or entire, smaller than in the last; stipules similar; flowers yel- 

 lowish-white or bluish-tinged, 10-16 mm. wide; petals scarcely exceeding the linear 

 sepals; capsule 4-6 mm. long. \V. tenella Muhl.; not Poir.] Woods and fields. 

 Me. to Ga., Mich, and Tex. March-May. 



2. CUBELIUM Raf. 



A perennial erect leafy-stemmed herb, the alternate leaves entire or obscurely 

 dentate, the small greenish flowers 1-3 together in the axils. Sepals 5, equal, not 

 auricled. Petals nearly equal, erect, imbricated, the lower one broadest and some- 

 what gibbous below. Stamens 5, syngenesious, the sheath glandular at base; 

 anthers sessile. Style hooked at the apex. Capsule somewhat lobed, 3-valved. 

 A monotypic genus of N. Am. 



i. Cubelium concolor (Forst.) Raf. GREEN VIOLET. (I. F. f. 2513.) Plant 

 3-9 dm. high, pubescent; leaves oblong -lanceolate, 7-12 cm. long, acuminate, 

 tapering to a short petiole; stipules linear, acute; flowers 8 mm. long, on short 

 recurved peduncles; seeds large. Moist woods, Ont. to Mich., N. Car. and Kans. 

 May-June. 



3. CALCEOLARIA Loefl. 



Herbs or rarely shrubs, with small axillary or racemose flowers. Sepals un- 

 equal, not auricled. Petals unequal, the lowermost one longest, gibbous or saccate 

 at base, the upper pair shorter than the lateral ones. Anthers connivent, on distinct 

 filaments, the lower glandular or spurred. Capsule elastically dehiscent into 3 

 valves. About 45 chiefly tropical American species. 



i. Calceolaria verticillata (Ort.) Kuntze. NODDING VIOLET. (I. F. f. 25 14. ) 

 Stems clustered, glabrate or somewhat pubescent, erect or ascending, 1-4 dm. high, 

 from a woody base; leaves alternate, linear, 1.5-4 cm. long, often fascicled; stipules 

 subulate: flowers white, solitary, nodding, 4-6 mm. long. Dry ground, Kans. to 

 Tex., Colo, and Mex. April-July. 



