Trees, Shrubs and Vines 
28. Wild Cypress-vine. (Ipomcea coccinea.) 
LEAF: 2'—3', simple, alternate, entire or slightly lobed or angled, 
base cordate, apex sharp. FLOWER: scarlet, occasionally yellow- 
ish, 1’ long (corolla tubular with flat border, stamens protruding), 
about 5-clustered ; twining ; herbaceous. Middle States, Virginia, 
and south. (PI. IV.) 
29. White Star-ipomeea. (I. lacunosa.) 
LEAF: 2’, simple, alternate, entire or lobed, heart-shaped, apex 
sharp. FLOWER: white (or purple-edged), bell-shaped (corolla 
5-lobed, %'-1' long, sepals pointed and hairy, no leafy bracts at 
base of calyx), I-3-clustered ; August, September. Pennsylvania 
to Illinois, and south; twining and trailing ; herbaceous. 
30. Field Convolvulus. (C. arvensis.) 
LEAF: 2'-4', simple, alternate, entire, somewhat arrow-shaped, 
the projections at base sharf. FLOWER’ white or reddish-tinged 
(corolla funnel- to bell-shaped, 3/' long), mostly single ; June, in 
old fields. Maine to Virginia; twining or trailing (sometimes 
erect). (CPL EV.) 
31. Pipe-vine. Dutchman’s Pipe. Wild Ginger. 
(Aristolochia sipho.) 
LEAF: 6-12 across, simple, alternate, entire, roundish, base 
cordate. FLOWER: brownish (no corolla, calyx 1%’ long, tubular, 
bent, with brownish-purple fat border), single or paired; May, 
June, Pennsylvania to Kentucky, and south; cultivated; twin- 
ing, woody. (Pl. IV.) 
32. Black Bindweed. (Polygonum convolvulus.) 
LEAF ~ 1-2’, simple, alternate, entire, halberd-shaped, base 
cordate ; stalk a little rough, not prickly ; base of sheathing stip- 
ules not bristle-fringed. FLOWER: whitish, or greenish-rosy- 
tinted, small (no corolla, calyx 4-5-parted, 3 outer lobes heeled 
or angled), in short racemes; July, August; seed not glossy. 
Eastern States ; climbing and trailing. 
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