200 OKDEU -Jo. CONVOLVULACE^E. 



l-6-flowered, longer than the petioles; sepals } as long as the corolla; corolla y. 

 white witti a purple centre, n N. Y. to 111., and S. July, August. 



5. CALONYCTION SPECIOSUM (or Ipomoea Bona-nox), GOOD-NIGHT, 



Is n tall climber of the W. Indies and S. Fla., often cultivated in the greenhouse. Flow- 

 ers 4 7 on each long peduncle, very large, funnel-form, white. 



6. CONVOLVULUS, L. BINDWEED. Sep. 5. Cor. bell-form. Style 



1. Stigmas 2, thread-form, often revolute. Ovaiy and capsule 2-cellrd, 4- 

 secdeil. Herbs or slirubs, twining or erect. 



1 C. arvensls L. Prostrate or climbing ; leaves arrow-shaped to ear-shaped ; pert. 



bearing 1 small rose-white flower and 2 bracts. 11 Fields : rare. June. 



2 C. TRICOLOR. Stem weak, 1 3f high ; leaves lance-obovate, sessile, shorter than the 



1 -flowered ped. ; corolla yellow in centre, white next, border blue. (I) Europe. 



7. CALYSTEGIA, Br. Calyx 5-parted, included in 2 leaf-like bracts. 

 Cor. bell-form, 5-plicate. Style 1. Stigmas 2, obtuse. Capsule 1 -celled, 4- 

 seeded. Herbs, with the flowers solitary. 



1 C. gpitliamxea Br. Erect or assurgent, 68' (a span) high ; leaves lance-oblong, as 



long as the peduncles ; flowers white. V. Can. to Penn., and W. June-. 

 4 C. Septum Br. Rutland Beauty. Glabrous, twining; Ivs. cordate-sagittate, lobea 

 truncate ; bracts cordate ; flowers many, large, white with a reddish tinge. V. Hedges, 

 thickets, Can. to Fla. 6 lOf. May July. 



/3. Cntexbtiana. Pubescent, with small leaves and short peduncles. S. 

 y. ? paradojca. Tomentous ; bracts linear, remote from the flowers. (Pursh.) 



8. E VOLVULUS, L. Sep. 5. Cor. bell-, funnel-, or wheel-form. Sty. 



2, each bifid. Ovary and capsule 2-celled, 4-seeded. Herbs diffuse. 



E. sericeus Swtz. Stem dividing at base into simple, filiform, procumbent branches ; 

 leaves lance-linear, sessile, 3-veined, silky beneath, 9" ; ped. 1 2", 1-flowered ; co- 

 rolla wheel-form, 5", white, if Prairies, Ga., Fla., to La. If. 



9. STYLISMA, Raf. Sepals 5, equal. Corolla bell-form. Stamera 

 included. Styles 2, rarely 3. Stig. capitate. U Slender creepers. 



1 S. liumistrata (and aqnatica) Walt. Hairy or smoothish ; leaves oval, oblong, or 

 linear, obtuse or retuse both ways, on short petioles ; ped. longer than the leaves, 3- 

 (1 5-)flowered ; bracts minute ; styles less than J united ; corolla 69", white. 

 Sandy soils, Va. to O., and S. 2 5f. Lvs. 1218". (S. evolvuloidea Choisy.) Jn.-Sept 



5J S. Pickering!! (Torr.) Leaves linear, narrowed to subsessile base ; bracts leafy, 

 equalling the flower ; styles more than I united, otherwise as No. 1. N. J. to N. C. 



10. DICHONDRA, Forst. Sep. 5, obtuse. Corolla bell-form, 5-cleft. 

 Pistils 2, distinct. Capsules 2, utricular, 1-seeded. U Prostrate. 



D. repens Forst. Lvs. round-cordato or reniform, the petiole longer than 'he blade 

 or the 1-flowered peduncles ; calyx villous, larger (3") than the whitish corolla (3'') 

 Wet grounds, S. 312'. March May. 



11. CUSOUTA, Tourn. DODDER. Fls. 5-(rarely 4-)parted. Corolla 

 globular-bell-form. Sta. appendaged with scales or fringes at base. Styles 

 2. Caps. 2-celled, 4-seeded. @ Stems yellow to orange, thread-form, with 

 minute scales for leaves, twining against the sun and living on other plants. 



Stigmas filiform a? well a# the styles. Capsule regularly circumscissile No 1 



$ Stigmas capitate. Capsule iudohit-.r.ont or bursting irregularly. ..(*) 



