DESCRIPTIONS OF SOME COMMON WEEDS 211 



Ivy Leaved Morning Glory (Ipomoea hedcracea, Jacq.). 

 A twining or trailing shrub, the stems having retrorse 

 hairs ; leaves ovate-orbicular, three-lobed, the lobes acute 

 or acuminate ; flowers in one to three-peduncled clusters, 

 with peduncles shorter -than the petioles, opening in 

 early morning, white, purple, or pale blue ; sepals lanceo- 

 late, pointed, hairy below; corolla funnel-form, the tube 

 nearly white, light blue or purple ; capsule depressed, 

 three-valved. Found in waste places and fields from New 

 York southward and west to Missouri and Nebraska. 



The Common Morning Glory (I. purpurea) is an annual 

 with retrorsely hispid hairs on stem, leaves heart-shaped, 

 acuminate, entire; peduncles three to five-flowered, fun- 

 nel-form ; corolla purple, pink, or white ; capsule de- 

 pressed, globose. Commonly cultivated, becoming an 

 escape from cultivation, especially southward. The man 

 of the earth, or wild potato vine (I. pandurata) is a 

 smooth, trailing or twining perennial, with large roots; 

 slender petioled leaves which are cordate, acuminate or 

 occasionally fiddle-shaped ; peduncles larger than the 

 petioles ; one to five-flowered ; corolla white with purple 

 on the inside, funnel form. Occurs from New England 

 to Missouri and Texas. The bush morning glory (I. lep- 

 tophylla), with a large root, erect stem, linear leaves, one 

 to two-flowered peduncles, and large flowers, occurs from 

 Nebraska to Texas. 



Hedge Bindweed or Wild Morning Glory (Convolvulus 

 sepium, L.). A smooth, occasionally pubescent peren- 

 nial vine, twining around supports or trailing on the 

 ground ; leaves triangular, halberd or arrow-shaped, with 

 pointed tips, the basal lobes obliquely or truncately 

 lobed ; flowering peduncles four-angled, with two leaflike 

 bracts which are commonly acute ; flowers large ; corolla 

 white or tinged with purple ; seeds rather large and black. 

 Very generally distributed throughout United States and 

 common in corn fields, meadows, grain crops and along 



