SCROPHULARIACE^. (fIGWORT FAMILY.) 315 



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

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

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

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



7. V. agrestis, L. Anuual, pubescent ; stems prostrate, diffusely 

 branched ; leaves all petioled, ovate, coarsely serrate ; peduncles much longer 

 than the calyx, recurved in fruit ; corolla blue, striate. — Cultivated ground. 

 Introduced. Feb. - May. — Stem 6' - 1 2' long. Leaves 6" - 9" long. Fruit- 

 ing calyx much enlarged. 



14. CAPRARIA, L. 



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

 Stamens 4-5: anthers sagittate. St3'le slender: stigma thick, ovate, at 

 length 2-lobed. Capsule coriaceous, ovate, septicidally 2-valved, the valves 

 2-cleft at the apex. Seeds numerous, reticulate. — Perennial herbs, or f?hrubby 

 plants. Leaves alternate, serrate. Peduncles axillary, single or Ifj' pairs, 

 mostly 1 -flowered. 



1. C. biflora, L. Slirubby, smooth or jiubescent ; stem erect, branching; 

 leaves lanceolate or oblong, sharply serrate, narrowed aud 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- V-lV long. Flowers white ? 



15. SCOPARIA, L. 



Calvx 4 - 5-parted. Corolla wheel-form, 4-cleft, hairy in the tliroat. Star 

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

 valves membi'anaceous, entire. Seeds numerous, reticulate. — Herbaceous or 

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

 monly by pairs, 1 -flowered. 



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

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

 flowers small, white. — South Florida. — Stem l°-3°higli. Leaves i' -li' 

 long. 



16. HYDRANTHELIUM, HBK. 



Calvx 4-parted. Corolla short-funnel-shaped, 3-cleft. Stamens 3, inserted 

 on the throat of tlie corolla. Style 2-lobed. Capsule many-seeded. — 

 Aquatic herbs, with tlie habit of Callitriche. Leaves opposite. Peduncles 

 axillary, 1-flowered. 



1. H. Egense, Poepp. Floating; stem filiform, brandling; lower 

 leaves small (2" or 3" long), distant, oblong, the upper ones crowded, obo- 

 vate ; calyx lobes ovate-lanceolate. — New Orleans (Dr. Hale). Introduced ? 



17. BUCHNERA, L. 



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

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

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



