branches, becoming very elongate and spirally twisted or coiled; sepals broadly 

 ovate- to oblong-elliptic, about 5 mm. long, broadly rounded at apex; corolla nar- 

 rowly funnelform. lavender-pink, about 1.5 cm. long; capsule ovoid, smooth, about 

 1 cm. long. /. heptaphylla (Roxb.) Voigt, illegit. name, /. spiralis House, /. pul- 

 chella of auth.. not Roth. 



Alluvial or damp silty or clayey soil, in mud at edge of water of lakes and ponds, 

 locally abundant in cen. and s. Tex. and s.e. Okla. (McCurtain Co.), June-Oct.; 

 nat. probably of India, now widespread in warm countries around the world. 



6. Ipomoea stolonifera (Cyr.) Gmel. Beach morning glory. 



Glabrous perennial; stems prostrate and rooting at nodes, not twining; leaf 

 blades rather fleshy or leathery, varying from oblong-ovate or broadly short-oblong 

 and entire with obtuse to truncate or emarginate apex to deeply and unequally 3- to 

 7-lobed, 2-4 cm. long, 1-4 cm. wide; peduncles 1 -flowered; sepals elliptic-oblong; 

 corolla white with yellow center, 4.5-7 cm. long. /. littoralis (L.) Boiss., not Bl. 



Beaches, wettish depressions and flats, and dunes along the Tex. Gulf Coast, 

 Apr. -Nov.; warm regions around the world. 



7. Ipomoea Pes-caprae (L.) Sweet var. emarginata Hallier f. Railroad vine, goat- 



foot MORNING glory. 



Glabrous perennial; stems prostrate and rooting at nodes, not twining; leaf blades 

 rather fleshy or leathery, suborbicular. entire but more or less deeply notched at 

 apex. 4-10 cm. long and wide; peduncles 1- or usually several-flowered; sepals 

 elliptic-orbicular; corolla rosy or purple, 5-7 cm. long. Incl. subsp. brasiliensis (L.) 

 V. Ooststr. 



Beaches, wettish depressions and flats, and dunes along the Tex. Gulf Coast, 

 June-Nov.; warm regions around the world. 



8. Ipomoea pandurata (L.) Mey. Wild potato. 



Glabrous or pubescent, trailing or twining and low-climbing from woody tuber- 

 ous root; petioles 1-8 cm. long; leaf blades cordate or cordate-ovate, often with 

 indented sides and almost 3-lobed. 3-10 cm. long, 2-9 cm. wide, glabrous to 

 densely soft-pubescent beneath; peduncles 1- to several-flowered; sepals markedly 

 unequal, oblong-elliptic; corolla white with purple-red center, 5-8 cm. long. 



Thickets, alluvial low wettish ground, along streams and edge of lakes and 

 ponds, fallow fields and roadsides, e. Tex. w. to Bexar, Blanco and Johnson cos. 

 and Okla. ( Waterfall), June-Sept.; s.e. U.S. 



9. Ipomoea sagittata Poir. Fig. 639. 



Glabrous perennial, tightly twining, low-climbing, from creeping root; leaf blades 

 deeply sagittate, deltoid-lanceolate to narrowly ovate-lanceolate in outline, entire, 

 4-10 cm. long, 1-5 cm. wide (across base); peduncles 1-flowered; sepals markedly 

 unequal, oblong-elliptic, apex broadly rounded with an abrupt small point; corolla 

 red-purple, funnelform-campanulate. 6-9 cm. long. 



Beaches and dunes, edge of marshes, in wet savannahs, in and about lakes and 

 ponds, and along drainage and irrigation canals, along the Tex. Gulf Coast, rarely 

 inland up the Rio Grande to Val Verde Co., Apr.-Oct.; Tex. to Fla. and W.I.; also 

 w. Medit., where probably an early introd. 



10. Ipomoea amnicola Morong. 



Glabrous, twining, low-climbing, from creeping root; leaf blades cordate-ovate, 

 entire. 2-6 cm. long, 2-7 cm. wide; peduncles several- to many-flowered, rather 

 short; sepals oblong-orbicular; corolla white with purple-red center, funnelform, 

 2-4 cm. long. 



1357 



