CONVOLVULACEAE 963 
segments linear or lanceolate, the lateral about Àj as long as the terminal one; petioles 
about as long as the basal lobes: peduncles usually 1-flowered : sepals glabrous, oblong 
to suborbicular, 6-9 mm. long, obtuse or cuspidate : corolla purple, 5-6 cm. long; tube 
funnelform ; limb 6-7 em. broad: capsules ovoid, 1-1.5 em. long: seeds villous. (J. sagit- 
tata Cav. ] 
In sandy soil, North Carolina to Florida and Texas. Spring to fall. 
7. Ipomoea trífida (H. B. K.) G. Don. Perennial, pubescent, or glabrate. Stems twin- 
ing or trailing, 4-20 dm. long: leaf-blades 2-6 cm. long, acuminate, the lower ones often 
entire, upper 3-lobed, all cordate ; petioles as long as the blades or shorter: peduncles 
3-10-flowered : sepals glabrous, 10-12 mm. long, oblong to lanceolate or ovate-lanceolate, 
acuminate: corolla pink or lilac-purple, 2.5-3 cm. long; tube funnelform ; limb 3-4 cm. 
broad : capsules subglobose, 7-9 mm. in diameter, more or less pubescent near the top: 
seeds smooth and glabrous. 
In valleys and light soil, Texas to Mexico and tropical America. 
8. Ipomoea Caroliniàna Pursh. Annual, hirsute or glabrate. Stems trailing or 
twining, l-several m. long, often branching: leaf-blades ovate in outline, entire or deeply 
3-lobed, cordate, the lobes acuminate or rarely obtuse ; petioles longer than the blades or 
shorter: peduncles stout, 1-3-flowered : sepals hirsute, oblong or oblong-lanceolate, 9-12 
mm. long, acute or acuminate : corolla pink or purple, 2.5-4 cm. long ; tube often whitish ; 
limb 4-6 cm. broad: capsules subglobose, 7-8 mm. in diameter, more or less pubescent : 
seeds glabrous. [J. commutata R. & S.] 
In sandy soil, South Carolina to Florida and Texas. 
9. Ipomoea lacunósa L. Annual, sparingly hirsute, or glabrate. Stems twining, 
5-25 dm. long, branching, rather slender: leaf-blades ovate, entire or 4-lobed, 2-7 cm. 
long, deeply cordate ; petioles shorter than the blades: peduncles usually 1-3-tlowered : 
sepals nearly glabrous, oblong or ovate, 10-12 mm. long, acute or acuminate, ciliate: co- 
rolla 1.5-2 em. long; tube white, funnelform ; limb often purple-margined, 1-1.5 cm. 
broad : capsules subglobose, over 1 cm. in diameter, pilose: seeds glabrous. 
In fields and low grounds, Pennsylvania to Kansas, South Carolina and Texas. 
10. Ipomoea tríloba L. Annual, more or less hirsute, or glabrate. Stems twining, 
often high-climbing, branching : leaf-blades ovate, 4-10 cm. long, entire or hastately 3- 
lobed, acuminate, glabrate ; petioles shorter than the blades: peduncles commonly sur- 
passing the leaves: sepals pubescent, oblong or suborbicular, 8-10 mm. long, acute or 
acuminate : corolla purple, 1.5 cm. long ; limb 1-1.5 cm. broad : capsules subglobose, 6- 
8 mm. in diameter, often pubescent : seeds glabrous or nearly so. 
In sandy soil, peninsular Florida. 
11. Ipomoea:cairica (L.) House. Perennial, glabrous or nearly so, bright green. 
Stem twining, more or less branched: leaf-blades suborbicular, 4-9 cm. in diameter, 5-7- 
parted ; segments mainly elliptic-lanceolate, acute or acuminate, entire or the lower pair 
lobed at the base; petioles mostly shorter than the blades, glabrous : sepals glabrous, 4-8 
mm. long, obtuse : corolla purpliah: funnelform ; tube 3-4 cm. long ; limb 5-6.5 em. broad : 
capsules ovoid, 10-12 mm. long: seeds granular, finely pubescent. (J. palma/a Forsk.] 
In waste places, Pensacola, Florida. Native of northern Africa. 
12. Ipomoea dissécta (Jacq.) Pursh. Perennial, villous-hirsute, or glabrate. Stems 
twining, branching : leaf-blades suborbicular, 3-10 cm. in diameter, 5-7-parted ; segments 
oval to oblong or T oieoliLe, coarsely toothed or pinnatifid ; petioles as long as the blades 
or longer, villous-hirsute : sepals glabrate, oblong to oblong-oval, 1-2.5 cm. long, or 3 cm. 
long at maturity, obtuse: corolla white with purple throat; tube funnelform, 2-3 cm. 
long ; limb 3-5 cm. broad : capsules about 1.5 cm. long: seeds smooth and glabrous. 
In sand near the coast, Georgia and Florida to Texas. 
13. Ipomoea costellàta Torr. Annual, more or less hirsute. Stems erect or diffusely 
branched : leaves relatively few ; blades pedately 7-9-parted, the segments linear or spat- 
ulate or some of them linear-filiform : peduncles filiform, longer than the leaves: sepals 
ovate-lanceolate or oblong, acute, the outer ones with 1-3 crest-like keels: corolla rose- 
purple, about 1 cm. long: capsules globular, about 5 mm. in diameter: seeds puberulent. 
In dry soil, southern Texas to Arizona and Mexico. 
14. Ipomoea fistuldsa Mart. Perennial, shrubby, the young parts puberulent. Stems 
several from a root, 1-2.5 m. tall: leaf-blades ovate, 5-9 cm. long, somewhat acuminate, 
entire, cordate at the base, long-petioled : peduncles 4-12 cm. long, usually several- 
flowered : sepals suborbicular or orbicular-ovate, 5-7.5 mm. long, the inner scarcely longer 
than the outer : corolla light purple or rose-colored, 6-8 em. long : capsules ovoid, about 
1.5 mm. long: seeds shaggy pubescent. 
In waste places, Pensacola, Florida. Native of South America. 
