206 SCROPHULARIACE^. (fIGWORT FAMILY.) 



ones entire ; peduncles shorter than the calyx ; corolla white, minute. — Cul- 

 tivated ground, very common. April -June. — Stem 2'- 12' high. Leaves 

 I'-l'long. 



5. V. arvensis, L. Annual, hairy ; stems ascending, branched at the 

 base ; leaves ovate, obtuse, crenate, petioled ; the floral ones lanceolate, entire, 

 sessile ; flowers nearly sessile ; corolla pale blue. — Cultivated ground. Intro- 

 duced. May and June. — Stems 6'- 12' high. Leaves 4"- 6" long. 



6. V. agrestis, L. Annual, pubescent; stems prostrate, diff'usely branched; 

 leaves all petioled, ovate, coarsely serrate ; peduncles much longer than the 

 calyx, recurved in fruit ; corolla blue, striate. — Cultivated ground. Intro- 

 duced. Feb. -May. — Stem 6'- 12' long. Leaves 6" -9" long. Fruiting 

 calyx much enlarged. 



13. CAPRARIA, L. 



Calyx 5-parted, equal. Corolla bell-shaped, equally 5-lobed, smooth within. 

 Stamens 4 - 5 : anthers sagittate. Style slender : stigma thick, ovate, at length 

 2-lobed. Capsule coriaceous, ovate, septici dally 2-valved, the valves 2-cleft at 

 the apex. Seeds numerous, reticulate. — Perennial herbs, or shrubby plants. 

 Leaves alternate, serrate. Peduncles axillary, single or by pairs, mostly 1- 

 flowered. 



1. C. biflora, L. ' Shnibby, smooth or pubescent; stem erect, branching ; 

 leaves lanceolate or oblong, sharply serrate, narrowed and entire below the 

 middle ; peduncles filiform, mostly by pairs, shorter than the leaves ; calyx- 

 lobes linear ; corolla deeply 5-cleft ; stamens 5, included. — South Florida. 

 Nov. — Stem 2° -3° high. Leaves 1'- 1|' long. Flowers white? 



14. SCOPARIA, L. 



Calyx 4 - .5-parted. Corolla wheel-form, 4-cleft, hairy in the throat. Sta- 

 mens 4. Style club-shaped at the apex. Capsule septicidally 2-valved, the 

 valves membranaceous, entire. Seeds numerous, reticulate. — Herbaceous or 

 shrubby plants, with opposite or whorled leaves. Peduncles axillary, com- 

 monly by pairs, 1 -flowered. 



1. S. dulcis, L. Annual, smooth; leaves ovate or oblong, toothed, mostly 

 three in a whorl, much longer than the peduncles ; calyx-lobes oblong ; flowers 

 small, white. — South Florida. — Stem lo-3° high. Leaves ^'-1^' long, 



15. BUCHNERA, L. 



Calyx tubular, .5-toothed. Corolla salver-shaped, 5-lobed, the lobes wedge- 

 obovate. Stamens 4, didynamous, included : anthers 1 -celled. Style simple, 

 club-shaped at the apex. Capsule coriaceous, straight, loculicidally 2-valved, 

 the valves entire. Seeds numerous, reticulate. — Rough herbs, turning black 

 in withering. Leaves opposite, toothed or entire ; the uppermost small, and 

 passing into the bracts of the many-flowered spike. Flowers blue. 



