190 GAMOPETALOUS EXOGENS 



diffusely branching base. Leaves % to half an inch long, somewhat fleshy in tex- 

 ture, the lower ones on short petioles. Raceme erect, rather loose ; flowers solitary, 

 in the axils of elliptic leaf-like bracts; corolla pale blue (sometimes nearly white), 

 with deeper blue stripes; capsule broadly obcordate, ciliate. 

 Hab. Moist, grassy grounds. Nat. of Europe. Fl. May. Fr. June. 



g 2. ANNUALS : lower leaves opposite, upper alternate. 

 f Flowers subsessile, in the axils of leaf -like, bracts. 



T. T'. peregrina, L. Smooth ; stem erect ; leaves orate, and obleag, 

 rather obtuse, dentate-serrate; capsule orbicular, slightly notched. 

 FOREIGN VERONICA. Purslane-leaved Speedwell. Neckweed. 



Stem 3 to 6 inches high, often branched at base. Leaves half an inch to near an 

 inch long, fleshy, tipper ones sessile, lower ones petiolate. Calyx-lobes resembling 

 the small upper leaves, or bracts. Corolla white, small and caducous, the lobes 

 nearly equal. 

 Iftb. Gardens, and lots. FL May. Fr. June. 



Obs. Mr. BENTHAM (in DC. Prodr.) seems to think this is an 

 American plant, and has been carried hence to Europe. However 

 that may be, it has every appearance of a stranger, in Chester 

 County. It \vas, at one time, supposed to possess medicinal vir- 

 tues, in scrofulous affections, which acquired for it the name of 



S. V. arvensis, L. Hairy; rather erect; lower leaves cordate-ovate, 

 incised-crenate, petiolate, upper ones lanceolate, entire, sessile; 

 capsule broadly obcordate, much compressed, ciliate. 

 FIELD VERONICA. Corn Speedwell. 



Stem 2 or 3 to 6 inches high, erect or assurgent, simple or often much branched 

 at base. Leaves % to half an inch long. Calyx-lobes unequal. Corolla pale blue, 

 shorter than the calyx. 

 Hab. Dry banks; roadsides, &c. Nat. of Europe. Fl. May. Fr. June. 



t f Flowers pedunculate, axillary and solitary. 



5). I", hcderaefolia, L. Hairy; prostrate; leaves roundish-ovate, 

 8- or 5-lobed, petiolate; peduncles longer than the leaves. 

 IVY-LEAVED VERONICA. 



Mem 5 to 10 inches long, flaccid, diffuse, pnbesccntin lines. Leaves half an inch 

 in length, and as wide as long; lowest pair (primordial? or seminal?) roundish- 

 oval. entire, on long petioles ; lower stem-leaves mostly 5-lobed. upper ones 3-lobed. 

 Cffralla blue, shorter than the calyx. Capsule turgid, rugose. 

 Hab. Banks of Ridley creek. Nat. of Europe. FL April. Fr. May. 



Obs. This pretty little species is yet quite rare, with us. Two 

 other procumbent species are partially naturalized in the U. States. 

 viz: V. agresti^ L. in the South, and V. JBuxbaumii, Ten. in and 

 around the old Bartram Garden', but they have not yet reached 

 Chester County. 



274. BUCIIIVE^RA, L. 



[Dedicated to John Gottfried ttuc/tncr ; an early German Botanist.] 

 Calyx ovoid-tubular, o-toothed. Corolla salver-form; tube slender, 

 slightly curved; border nearly equally o-lobed; lobes cuueate-obo- 

 vate. Stamens didynanious, included; anthers 1-celled. Style clu- 



