CONVOLYULACEAE. 



[Vol. III. 



4. Ipomoea leptophylla Torr. Bush 



Morning-glory. (Fig. 2948.) 



Ipomoea leptophylla Torr. in Frem. Rep. 95. 1845. 



Perennial from an enormous root, which some- 

 times weighs 25 lbs., glabrous throughout; stems 

 erect, ascending or reclining, rather stout, 2-4'' 

 long, much branched. Leaves narrowly linear, 

 entire, acute, 2 / -5 / long, l // -3 // wide; petioles 

 very short; peduncles stout, nearly erect, usually 

 shorter than the leaves, 1-4-flowered; pedicels 

 shorter than the peduncles; sepals broadly ovate, 

 obtuse, 3 // -4 // long, or the outer shorter; corolla 

 funnelform, purple or pink, about 3' long, the limb 

 scarcely lobed; capsule ovoid, acute, 8 // -i2 // long, 

 2-celled, much longer than the sepals; seeds pubes- 

 cent. 



In dry soil, Nebraska and Wyoming, south to Texas 

 and New Mexico. May-July. 



5. Ipomoea purpurea (L,.) Roth. 

 Morning-glory. (Fig. 2949.) 



Convolvulus purpureas P. Sp. PI. Ed. 2, 2:9. 1762. 

 Ipomoea purpurea Roth, Bot. Abh. 27. 1787. 



Annual, pubescent; stem retrorsely hairy, 

 twining or trailing, 4-io long. Leaves broadly 

 ovate, deeply cordate, acute or acuminate, 2 r - 

 \ f wide, slender-petioled ; peduncles slender, 

 1-5-flowered, often longer than the petioles; se- 

 pals lanceolate or oblong, acute, pubescent or 

 hirsute near the base, 6 // -S // long; corolla fun- 

 nelform, blue, purple, pink, variegated or white, 

 i'-2y 2 ' long; ovary 3-celled (rarely 2-celled); 

 stigmas 3 (rarely 2); capsule depressed-globose, 

 about 5 // in diameter, shorter than the sepals. 



In waste places, commonly escaped from gardens, 

 Nova Scotia to Florida, west to Ontario, Nebraska 

 aud Texas. There is a double-flowered form in 

 cultivation. Adventive or naturalized from tropical 

 America. July-Oct. 



6. Ipomoea hederacea Jacq. Ivy- leaved Morning-glory. (Fig. 2950.) 



Ipomoea hederacea Jacq. Icon. Rar. pi. j6. 1781. 



Annual, pubescent; stem twining or climbing to 

 a height of 2-5, slender, retrorsely hair}-. 

 Leaves ovate-orbicular in outline, long-petioled, 

 deeply 3-lobed, cordate at the base, 2 / -5 / long, the 

 lobes ovate, acuminate, entire, or the lateral ones 

 sometimes rcpand or dentate; peduncles 1-3- 

 fiowered, much shorter than the petioles; flowers 

 opening in early morning, soon closing; sepals 

 lanceolate with long linear often recurved tips, 

 densely hirsute below, sparingly so above, &"-i2 ,r 

 long; corolla funnelform, the tube usually nearly 

 white, the limb light blue or purple, i / -i / ^ / long; 

 ovary 3-celled; stigmas 3; capsule depressed-glo- 

 bose, 3-valved, about as long as the lanceolate 

 portion of the sepals. 



In fields and waste places, Pong Island to Florida, 

 west to Pennsylvania, Nebraska and Mexico. Natu- 

 ralized or adventive from tropical America. July-Oct. 



