MORNING-GLORY FAMILY 



381 



3851 



3851. Ipomoea purpurea 



3852 

 3852. Ipomoea hederacea 



capsule or of 2-4 distinct carpels. Seeds erect, often pubescent ; embryo with 

 foliaceous cotyledons, plaited or crumpled ; endosperm scanty. 



A family of 45 genera and about 1.000 species, of wide distribution, but most abundant in the tropics. 

 Style 1; flowers showy, mostly trailing or twining vines. 



Stigmas capitate. 1- Ipomoea. 



Stigmas filiform or oblong. 2. Convolvulus. 



Styles 2; flowers small; low erect or diffuse herbs. 3. Cressa. 



1. IPOMOEA L. Sp. PI. 159. 1753. 



Annual or perennial herbs (rarely trees) with twining, trailing or sometimes erect 

 stems, and showy axillary, solitary or corymbose, ebracteate flowers. Sepals equal or 

 often unequal. Corolla funnelform, more or less plaited, the limb entire, angled or lobed. 

 Stamens included, equal or unequal; filaments filiform or dilated at base; anthers ovate 

 to linear. Ovary 2-4-celled, 4-6-ovuled ; style filiform, included ; stigmas 1-3, capitate. 

 Capsule globose or ovoid, usually septifragally 2-4-valved, 2-4-seeded. [Name Greek, 

 meaning worm-like.] 



A genus of approximately 400 species of wide geographic distribution, especially in the warm temperate 

 and tropical regions. Type species, Ipomoea Pes-tigridis L. 



Sepals lanceolate, acute, erect; corolla 5-6 cm. long. 1. /. purpurea. 



Sepals caudate-attenuate, the tips recurved-spreading, the base abruptly broadened; corolla 2.5-3.5 mm. long. 



2. I. hederacea. 



1. Ipomoea purpiirea (L.) Lam. Common Morning-glory. Fig. 3851. 



Convolvulus purpureus L. Sp. PI. ed. 2. 219. 1762. 

 Ipomoea purpurea Lam. Tab. Encycl. 1: 466. 1791. 

 Pharbitis purpurea J. O. Voigt, Hort. Sub. Calcutta 354. 184S. 



Annual, with twining stems 1-3 m. long, these, the peduncles and petioles retrorsely hirsute. 

 Leaves broadly ovate, deeply cordate at base, acute at apex, 4-8 cm. wide, appressed-pubescent ; pe- 

 duncles 1-5-flowered; sepals oblong to lanceolate, acute, 12-16 mm. long, pubescent and often 

 hirsute below ; corolla funnelform, 5-6 cm. long, blue, purple, pink, white or variegated ; ovary 

 commonly 3-celled ; stigmas 3 or rarely 2 ; capsule depressed-globose, about 1 cm. broad. 



Commonly cultivated in gardens, and frequently escaped in the Pacific States. Native of tropical Amer- 

 ica. Type locality: "Habitat in America." June-Nov. 



2. Ipomoea hederacea Jacq. Ivy-leaved Morning-glory. Fig. 3852. 



Convolvulus hcderaceus L. Sp. PI. 154. 1753. 

 Ipomoea hederacea Jacq. Ic. PI. Rar. 1: pi. 36. 1781. 

 Pharbitis hederacea Choisy, Mem. Soc. Geneve 6: 440. 1833. 



Annual, the stem slender, twining to a height of 6-15 dm., more or less retrorsely hairy. 

 Leaves deeply 3-lobed, broadly ovate in outline, deeply cordate at base, 3-8 cm. long, sparsely 

 appressed-pubescent, leaf-lobes contracted below ; petioles and peduncles retrorsely hirsute ; 

 peduncles shorter than the petioles, 1-3 flowered ; calyx-lobes 12-20 mm. long, abruptly nar- 

 rowed to an elongated linear tip, densely hirsute below ; corolla funnelform, 2-4 cm. long, the 

 tube usually nearly white, the limb light blue or purple ; stigmas 3 ; ovary 3-celled ; capsule 

 depressed-globose, 10-12 mm. high, 3-valved. 



Adventive in southern California; native of southeastern United States, from Virginia to Florida, Kan- 

 sas, and Texas. Type locality: Virginia and Carolina. July-Nov. 



