262 KHINANTHACEAE. 



glabrous. Common, in cultivated grounds. Sum. PURSLANE-SPEEDWELL. 

 NECKWEED. 



6. V. serpyllifolia L. Perennial, spreading, 0.5-2.5 dm. long: leaf -blades 

 suborbicular, oval, or oblong, 5-15 mm. long, entire or crenate: calyx-lobes 

 oblong or oblong-cuneate, nearly glabrous: corolla 2-3 mm. wide: capsules 3 

 mm. wide, pubescent. Common, in waste places. Early sum. THYME- 

 LEAVED SPEEDWELL. 



7. V. officinalis L. Perennial, creeping, 0.5-3 dm. long: leaf -blades oblong to 

 oval, varying to ovate or obovate, 0.5-4 cm. long, serrate: calyx-lobes oblong, 

 pubescent: corolla 5-8 mm. wide: capsules 3-3.5 mm. wide, truncate or retuse. 

 Common, in dry fields and open woods. Sum. COMMON-SPEEDWELL. 



8. V. americana Schwein. Perennial, glabrous, 1-6 dm. tall: leaf -blades oval, 

 oblong, or oblong-lanceolate, 1.5-5 cm. long, serrate: calyx-lobes oblong to 

 oblong-lanceolate, 2.5-3 mm. long: corolla 4-5 mm. wide: capsules 3-3.5 mm. 

 wide, 2-lobed. Common, in streams and swamps. Sum. AMERICAN - 



BROOKLIME. 



9. V. Anagallis-aquatica L. Perennial, glandular-pubescent above, 2-9 dm. 

 tall: leaf -blades lanceolate to oblong, 2-12 cm. long, finely serrate or nearly 

 entire: calyx-lobes lanceolate to ovate-lanceolate, 3-3.5 mm. long: corolla 4-5 

 mm. wide : capsules 2.5-3 mm. wide, minutely notched. M. Occasional, in 

 swamps and ditches. Limestones. Spr. and sum. WATER- SPEED WELL. 



10. V. scutellata L. Perennial, the stem often stoloniferous at the base, 

 glabrous: leaf -blades linear to linear-lanceolate or narrowly lanceolate, 1.5-5 

 cm. long, acuminate, entire or shallowly toothed, sessile: peduncles shorter than 

 the leaves: pedicels filiform: calyx-lobes oblong to oblong-lanceolate, 2-2.5 mm. 

 long, acute: corolla 6.5-9 mm. wide, surpassing the calyx: capsules reniform, 

 notched at the apex, 4-4.5 mm. broad. Susquehanna valley. Bare, in swamps 

 near Collin's Ferry. Sum. MARSH-SPEEDWELL. 



12. LEPTANDBA Nutt. Perennial, erect herbs. Leaf -blades elongate, 

 toothed. Flowers in erect spike-like racemes. Calyx-lobes 4, narrow. Corolla 

 tubular and somewhat salverform: lobes broad, much shorter than the tube. 

 Stamens 2, exserted: filaments erect, glabrous. Capsule narrow. 



1. L. virginica (L.) Nutt. Stems 3-18 dm. tall: leaf -blades oblong, elliptic, 

 or lanceolate, 4-13 cm. long, finely serrate: calyx-lobes lanceolate or linear- 

 lanceolate, 1-1.5 mm. long: corolla white or pink, 5-6 mm. long; lobes ovate: 

 capsules oblong or oval, 3-4 mm. long. Common, in swamps and damp 

 meadows. Sum. CULVER 'S-ROOT. CULVER 'S-PHYSIC. 



13. DASYSTOMA Eaf. Annual, biennial, or perennial, simple or spar- 

 ingly branched herbs. Leaf-blades entire, toothed, or pinnatifid. Flowers 

 axillary. Calyx-lobes 5, mostly ' about as long as the tube or longer. Corolla 

 f unnelf orm : lobes shorter than the tube. Stamens 4, included : filaments 

 pubescent. Capsule ovoid, oval, or elliptic. FALSE-FOXGLOVE. 



Annual or biennial : corolla pubescent or glandular without. 1. D. Pcdicularia, 



Perennial : corolla glabrous without. 



Stem pubescent : capsule narrow, pubescent, the body about 



hall included in the calyx-tube. 2. D. flava. 



Stem glabrous, sometimes glaucous : capsule turgid, glabrous, 



with only the abruptly narrowed base in the calyx-tube. 3. D. virginica. 



1. D. pedicularia (L.) Benth. Stem 3-12 dm. tall, puberulent, or sparingly 

 glandular-pubescent above: leaf -blades 2-6 cm. long, pinnatifid, the segments 

 coarsely toothed or incised: calyx-lobes coarsely toothed: corolla 2.5-3 cm. 

 long: capsules 12-15 mm. long. Common, in woods and thickets. Late sum. 



