Description of Native Vines 
33. Bristly-jointed Bindweed. (Polygonum cilinode.) 
LEAF: 1'-2', simple, alternate, entire, heart-shaped, apex ta- 
pering ; base of sheathing stipules dristle-fringed. FLOWER: 
as in 32, but outer calyx-lobes very slightly keeled ; July to Sep- 
tember ; seed glossy ; twining. 
34. Climbing False Buckwheat. (Polygonum scandens.) 
LEAF: 2'-3', simple, alternate, entire, heart-shaped, apex 
pointed ; sheathing stipules unfringed. FLOWER: as in 32, but 
the clusters commonly /afy,; seed glossy; fruit is margined, 
as in elm-seeds, pink and quite showy; climbs higher than 33. 
(Pl. IV.) 
35. Wild Yam-root. (Dioscorea villosa.) 
LEAF: 3’, simple, mostly alternate (sometimes nearly opposite 
or whorled), entire, heart-shaped, strongly pointed, somewhat 
downy beneath. FLOWER: greenish-yellow, very small (no co- 
rolla, calyx deeply 6-lobed, 6 stamens, 3 styles), in pendent ra- 
cemes and panicles; July. Commoner southward ; twining. 
36. Wintergreen. Checkerberry. (Gaultheria procumbens.) 
LEAF: 1-114’, simple, alternate, slightly serrate, oval to obo- 
vate, evergreen, glossy, thick, aromatic. FLOWER: white (corol- 
la rather ovoid, apex 5-toothed), mostly single, on short (3'-5’), 
erect, leafy branches from trailing stem ; July-September; berry 
red, edible. Commoner northward. (PI. IV.) 
37- False Violet. (Dalibarda repens.) 
LEAF: 1'-2', simple, alternate or clustered, round-toothed, 
roundish, base cordate, downy, slender stem (1'-3'). FLOWER: 
white (petals 5, obovate, spreading, stamens many, styles 5-10, 
long), single (or two), on a long stem; June-August. Pennsyl- 
vania, and north, in woods ; short, herbaceous, trailing, 
38. Bitter-sweet. Wax-work. (Celastrus scandens.) 
LEAF: 2'-3%4’, simple, alternate, finely serrate, oval to long- 
ovate, apex pointed, smooth. FLOWER: greenish, small (petals 
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