1090 CONVOLVULACEAE 
Stem trailing or climbing. 
Mature stem and leaves glabrous or glabrate: AT Ae ovate or hastate. 
Leaf-blades with more or less angular spreading basal 
obes. 1. C. americanus. 
Leaf-blades with rounded or scarcely angled basal lobes 
which are not spreadin 2. C. sepium. 
Mature stem and leaves copiou A ae softly pubescent: 
Leaf-blades elliptic, basal lobes = de d. 
Leaf-blades densely white-tomentulose beneath. 
3. C. sericatus. 
Leaf-blades green, softly pubescent. 4. C. repens. 
Leaf-blades lanceolate, basal lobes half as long, spread- 
ing, acute. 5. C. Nashii 
Stem erect or ascending. 6. C. spithamaeus. 
1. C. americanus (Sims) Greene. Stem epe 1-3 m. long, glabrate. Leaf- 
blades broadly hastate or ovate-hastate, 5—12 em. long, acuminate or apiculate: 
peduncles as long as the leaves or longer: 
bracts 2-3 em. long: corolla pink or rose- 
purple, 5-7 em. broa — (HEDGE-BINDWEED. ) 
—Thickets, various are N of Coastal 
Plain, C. to bs , Mo n and B S.— 
' Sim r to C. ameri- 
canus in habit pon ud "EU “leaf. 
blades narrowly state: corolla double, 
pink, mostly 4-5.5 em. wide, i locally 
cult. grounds and waste-place 
2. C. sepium L. Similar to C. americanus 
in habit: Teaf- blades relatively broader and 
m r ed at the apex, basal lobes 
directed backward, not spreading: corolla 
1 r pink.—Thieke 
locally naturalized in ? m., except the 
extreme north. Nat. of O. W. 
3. C. a. House. Stem twining, 5-10 dm. long, tomentose: leaf-blades 
elliptic-ovate, acuminate, shigaty mad cordate, white beneath with a dense 
silky-toment dios indument, 6-8 em. long: peduneles longer than the leaves: 
bracts 2.5—3 em. long: corolla white, "à 6 em. long.—Thickets, Blue Ridge, Ga. 
repens L. Stem twining or Hed leaf-blades narrowly or broadly 
Ecke 5—8 cm. lo ong, cordate at the base: peduncles as long as the léaves or 
longer: bracts 1.5—2.5 em. lon ng: e corolla its Or "pink! sh, 4-5 em. long.—Dry 
soil and old AEN various provinces, Fla. to Tex., S. Dak., and Va. 
5. C. Nashii House. Stem softly and finely sericeous-pubescent, twini n 1-2 
m. long: leaf- n lanceolate or the lower elliptic-lanceolate, 3-4 cm. long: 
basal s 1-2 em. long, spreading or produced: peduncles 1- flowe A shorter 
than the leaves: b: acts ovate, d dieit 14—18 mm. long: corolla white, or the 
limb Edu with pink, 4-5 em long.—Sw wampy plaees, Fla. 
6. C. spithamaeus L. Stem finely pd 1-7 dm. long: leaf-blades elliptic- 
ovate or fiddle-shaped, 4-10 em. long, rounded or subcordate at the base 
ets 1.5—3 em. long: co 
A At usually from the lower axils: braets 1.5 corolla white or 
g.—(Low-BINDWEED.)—Fields and a ram Be in eal- 
careous soil, various provinces, Fla. to Tenn. NW , Ont., 
13. STROPHOCAULOS Small. Perennial procumbent or twining vines. 
Leaf-blades sagittate to hastate, petioled. Flowers solitary or few together 
