324 FIGWORT FAMILY. 



++ ++ (D Flowers axillary and mostly alternate along the stem. 



V. peregrlna, Linn. NECKWEED or PURSLANE S. Common weed in 

 damp waste or cult, ground ; smooth, erect, branching, with lower leaves 

 oval or oblong and toothed, the upper oblong-linear and entire, inconspic- 

 uous flowers almost sessile in their axils, whitish corolla shorter than the 

 calyx, and many-seeded pod slightly notched. 



V. arvensis, Linn. CORN S. Introduced into waste and cult, grounds 

 E.; hairy, 3'-8' high, with lower leaves ovate and crenate, on petioles, the 

 upper sessile lanceolate and entire, blue flowers short-peduncled, and pod 

 obcordate. Eu. 



6. BUCHNERA, BLUE HEARTS. (I. G. Buchner, an early German 

 botanist.) Flowers summer. 2Z 



B. Americana, Linn. Rough-hairy, turning blackish in drying; with 

 slender stem l-2.) high, veiny leaves coarsely few-toothed, the lowest 

 obovate, middle ones oblong, uppermost lance-linear ; flowers scattered in 

 the slender spike, and corolla deep purple. Sandy or gravelly plains, 

 from N. Y., W. and S. 



7. CALCEOLARIA. (Latin calceolus, a shoe or slipper.) Tender 

 South American herbs or shrubs, with curious and handsome flowers, 

 cult, as house and bedding plants. The common cultivated species are 

 now much mixed. 



C. integrifdlia, Murr. (also called C. Ruo6sA and C. SALVi^KF6LiA) is the 

 commonest woody-stemmed species, with oblong leaves rugose in the 

 manner of garden Sage, and small yellow or orange flowers in crowded 

 clusters. 



C. corymbosa, Ruiz & Pav. Herbaceous, hairy or clammy-pubescent, 

 with ovate crenate-toothed leaves nearly all at the root, and loose corymbs 

 or cymes of yellow flowers, the purple-spotted mouth considerably open. 



C. crenatifldra, Cav. Parent of many of the more showy herbaceous 

 garden forms, with more leafy stems and larger flowers, their orifice 

 rounder and smaller, the hanging lower lip or sac 1' or more long, more 

 obovate and flat, somewhat 3-lobed as it were towards the end, and vari- 

 ously spotted with purple, brown, or crimson. 



C. scabioscefdlia, Sims. Delicate annual, with pinnately divided, 

 slightly hairy leaves, on petioles dilated and connate at base, and loose, 

 small, pale yellow flowers with globular lower lip about ' wide. 



8. COLLINSIA. (Zaccheus Collins of Philadelphia.) Flowers hand- 

 some, mostly 2-colored. (f) 



* Pedicels longer than the calyx. 



C. vrna, Nutt. Wild from W. N. Y., W. and cult.; slender, 6'-20 

 high, with ovate or lance-ovate and toothed leaves, the upper clasping 

 heart-shaped, and slender-peduncled flowers in early spring, lower lip 

 blue, upper white ; gibbous throat of corolla shorter than the limb ; pedi- 

 cels longer than the flowers. 



C. grand/fldra, Dougl. From Pacific coast ; saccate throat of corolla 

 as long as the upper lip, which is white or purple ; lower lip deep blue ; 

 pedicels about the length of the flower, the latter showy and f ' long. 



* * Pedicels shorter than the calyx. 



C. bf color, Benth. California ; a handsome garden annual, is stout, 

 with crowded flowers as if whorled, pedicels shorter than calyx, lower 

 lip of corolla violet, the upper pale or white, or in one variety both white. 



