Twining trailing ascending or rarely erect herbs, annual or perennial, with large showy axillary solitary or cymose flowers. Sepals equal or unequal. Corolla funnelform or cam-panulate, the limb entire, 5-angled or 5-lobed, the tube more or less plaited. Stamens equal or unequal, included; filaments filiform, or dilated at the base; anthers ovate, oblong, or linear. Ovary entire, globose or ovoid, 2-4-celled,4-6-ovuled; style filiform, included; stigmas 1 or 2, capitate or globose. Capsule globose or ovoid, usually septifragally 2-4-valved, 2-4-seeded. (Greek, worm-like.)

About 400 species, of wide geographic distribution. Besides the following, some 30 others occur in southern and western North America. Known as Morning-Glory or False Bindweed. Type species: Ipomoea pes-tigrinis L.

Ovary 2-celled (rarely 4-celled); stigma entire or 2-lobed. Leaves cordate; stems trailing or twining.

Perennial from an enormous root; corolla 2'-3' long.

1. I. pandurata.

Annual; roots fibrous; corolla 4-6 long, white.

2. I. lacunosa.

Annual; corolla 1' -1 1/2' long, pink or purple.

3. I. trichocarpa.

Leaves linear; stems ascending or erect.

4. I. leptophylla.

Ovary 3-celled; stigmas 3; leaves cordate. (Genus Pharbitis.) Leaves entire; corolla 2'-2 1/2' long.

5. J. purpurea.

Leaves deeply 3-lobed, corolla 1' -1 1/2' long.

6. I hederacea.

1. Ipomoea Pandurata (L.) Meyer. Wild Potato Vine

Fig. 3430

Convolvulus panduratus L. Sp. Pl. 153. 1753. I. pandurata Meyer, Prim. Fl. Esseq. 100. 1818.

Perennial from an enormous fleshy root, glabrous or puberulent; stems trailing or feebly climbing, 2°-12° long. Leaves broadly ovate, cordate, acuminate at the apex, 2'- 6' long, slender-petioled, entire, sometimes contracted in the middle, or some of the later ones rarely angulate-dentate or 3-lobed; peduncles 1-5-flowered, much elongated in fruit; sepals oblong, obtuse or acutish, 6"-8" long, glabrous; corolla funnelform, white, or with pinkish purple stripes in the throat, 2'-3' long, the limb 5-lobed; ovary 2-celled; capsule ovoid, 2-valved, 2-4-seeded, the seeds densely woolly on the margins and pubescent on the sides.

In dry soil, in fields or on hills, Ontario to Connecticut, Florida, Michigan, Kansas and Texas. Occurs rarely with double flowers. Man-of-the-Earth. Mecha-meck (Indian ). Wild sweet potato. Man-root. Wild jalap. Scammony. May-Sept.

1 Ipomoea Pandurata L Meyer Wild Potato Vine 1011 Ipomoea Pandurata L Meyer Wild Potato Vine 102

2. Ipomoea Lacunosa L. Small-Flowered White Morning-Glory

Fig. 3431

Ipomoea lacunosa L. Sp. Pl. 161. 1753.

Annual, pubescent or hirsute, rarely glabrous; stem twining, 2°-10° long. Leaves slender-petioled, broadly ovate, cordate, acute or acuminate at the apex, entire, angled or 3-lobed, 2'-4' long, the lobes acute; peduncles 1-3-flowered, shorter than the leaves; pedicels slender; sepals oblong or lanceolate, acute or acuminate, pubescent or ciliate, about 5" long; corolla funnelform, 6"-10" long, white, or the limb purple; ovary 2-celled; stigma capitate; capsule globose, 2-valved, shorter than or about equalling the sepals.

In moist soil, Pennsylvania to South Carolina, Illinois, Missouri, Kansas and Texas. In ballast at Atlantic seaports. White star. Morning-glory. July-Sept.