BCROPHULARIACEuE. (FIGWORT FAMILY.) 291 



7. V. serpyllifolia, L. (THYME-LEAVED SPEEDWELL. PA PL'S 



BETONY.) Much branched at the creeping base, nearly smooth ; branches as- 

 cending and simple (2' -4' high); leaves ovate or oblong, obscurely crenate, the 

 lowest petioled and rounded, the upper passing into lanceolate bracts ; raceme 

 loose.; pod rounded, broader than long, obtusely notched. Road-sides and 

 fields; common: introduced and indigenous. May -July. Corolla whitish, 

 or pale blue, with deeper stripes. (Eu.) 



-* * Annuals : floral leaves like those of the stem, so that the flowers appear axillary 

 and solitary : corolla shorter than the calyx, 



8. V. peregrina, L. (NECKWEED. PURSLANE SPEEDWELL.) Near- 

 ly smooth, erect (4' -9' high), branched; lowest leaves petioled, oval-oblong, toothed, 

 thickish ; the others sessile, obtuse ; the upper oblong-linear and entire, longer 

 than the almost sessile (whitish) flowers; pod orbicular, sligMy notched, many- 

 seeded. Waste and cultivated grounds ; common : appearing like an intro- 

 duced weed. April - June. 



9. V. ARVENSIS, L. (CORN SPEEDWELL.) Simple or diffusely branched 

 (3' -8' high), hairy; lower leaves petioled, ovate, crenate; the uppermost sessile, 

 lanceolate, entire ; peduncles shorter than the calyx; pod inversely heart-shaped, 

 the lobes rounded. Cultivated grounds ; rather common. (Nat. from Eu.) 



$ 5. Annuals (prostrate-spreading, hairy] : stem-leaves opposite (all petioled), the 

 upper alternate and bearing solitary peduncled flowers in their axils : corolla wheel- 

 shaped : pod flat : se-eds cup-sJiaped. 



10. V. AGRESTIS, L. (FIELD SPEEDWELL.) Leaves round or ovate, cre- 

 nate-toothed ; the floral somewhat similar, about the length of the recurved pedun- 

 cles ; calyx-lobes oblong ; flower small ; ovary many-ovuled, but the nearly orbicu- 

 lor and sharply notched pod 1 - 2-seeded. Sandy fields ; rare. (Adv. from Eu. ) 



11. V. BUXBAUMII, Tenore. Leaves round or heart-ovate, crenately cut- 

 toothed ('-!' long), shorter than the peduncles; flower large (nearly %' wide, 

 blue) ; calyx-lobes lanceolate, widely spreading in fruit.; pod obcordate-triangular, 

 broadly notched, 16 - 24-secded. Waste grounds, Philadelphia : rare. Milton, 

 Massachusetts, D. Murray. (Adv. from Eu.) 



12. V. HEDERJEF6LIA, L. (IVY-LEAVED SPEEDWELL.) Leaves rounded 



or heart-shaped, 3 - 7 '-toothed or ld)ed, shorter than the peduncles ; calyx-lobes some- 

 what heart-shaped ; flowers small ; pod turgid, 2-lobed, 2 - ^-seeded. Shaded 

 places, Long Island to Pennsylvania; scarce. April- June. (Adv. from Eu,) 



17. BUCHNERA, L. BLUE-HEARTS. 



Calyx tubular, obscurely nerved, 5-toothed. Corolla salver-form, with a 

 straight or curved tube, and an almost equally 5-cleft limb : the lobes oblong or 

 wedge-obovate, flat. Stamens 4, included, approximate in pairs : anthers one- 

 celled (the other cell wanting). Style club-shaped and entire at the apex. Pod 

 2-valved, many-seeded. Perennial rough-hairy herbs (doubtless root-parasites), 

 turning blackish in drying, with opposite leaves, or the uppermost alternate ; the 

 flowers opposite in a terminal spike, bracted and with 2 bractlets (Named io 

 honor of J. G. Buchner, an early German botanist.) 



