CONVOLVULUS FAMILY. 263 



§ 2. Style 2-cleft or 2 separate styles, rarely 3. Spreading or trailing, not twining. 



5. BONAMIA. Like Convolvulus, but the styles 2 or sometimes 3, or in one 



species 2-cleft, and stigmas capitate. Peduncles 1 - 7-flowered. 



6. EVOLVULUS. Corolla short and open fumiel-form, or almost wheel-shaped. 



Styles 2, each 2-cleft: the 4 stigmas obtuse. Pod 2-celled: cells 2-seeded. 



II. DODDER FAMILY ; slender parasitic twiners, without 

 green herbage and with only some minute scales in place of leaves ; 

 embryo slender and spirally coiled in the seed, destitute of coty- 

 ledons. 



7. CUSCIJT A. Calyx 4 - 5-cleft, or of 5 separate sepals. Corolla short, 4 - 5-cleft. 



Stamens with a scale-like mostly fringed appendage at their base. Styles 2 

 in our species. Ovary 2-celled : cells 2-ovuled. Pod commonly 4-seeded. 



1. QUAMOCLIT. (Aboriginal Mexican name.) Twiners, with small 

 flowers red or crimson, and with pale or white cultivated varieties, in summer, 

 open tlii-ough the day. © 



Q. vulgaris, Cypress- Vine. Cult, from Mexico : leaves pinnately parted 

 into slender almost thread-shaped divisions ; peduncles 1-flowered ; border of 

 the narrow corolla 5-lobed. 



Q. COCCinea. Run wild S. & W. : leaves heart-shaped, pointed ; sepals 

 awn-poiuted ; peduncles several-flowered; border of (1' long) corolla merely 

 5-angled. 



2. IPOMCEA, MORNING GLORY. (Greek-made name.) FL summer. 



§ 1. Ovary and pod S-cdled (or accidentally A-celled), with 2 seeds in each cell: 

 stigma more or less 3-lobed : corolla funnel-form, opening in early morning 

 for a few hours : stems twining freely, hairy, the hairs more or less retrorse. 



I. purpiirea, Common M. Cult, from Trop. Amer. and wild around 

 dwellings ; with heart-shaped pointed entire leaves, 3-4-flowered j^eduncles, and 

 pui-ple sometimes variegated or nearly wliite corolla, 2' long. ® 



I. Nil. Cult, or run wild S. : with hcart-tihaped 3-lobed leaves, 1 -3-flow- 

 ercd peduncles, slender-pointed sepals, and blue-purple or sometimes white 

 corolla l'-2' long. ® 



I. limbkta or albo-marginata, perhaps a var. of the preceding, a 

 tender species, with leaves little loljcd, angled or entire, and larger corolla with 

 deep violet border, edged with Avhite 2j' broad. (T) 



I. Learii, cult, from S. Amer. : tender, less hairy, with heart-shaped and 

 some deeply 3-lobed leaves, many flowers crowded on the summit of the 

 peduncle, and deep violet-blue corolla, 3' long and boi'der 3' wide. ^ 



§ 2. Ovary and pod 2-celled, the celts 2-seeded, or sometimes each cell divided by a 

 partition making 4 one-seeded cells : lobes of the stigma if any only 2. 



I. Bona-Nox, or Calony'ction speci6sdm. Cult, also wild far S. : 

 tall-twining, very smooth, but stems often beset with soft almost prieklv 

 projections ; leaves heart-shaped, halberd-shaped, or angled ; peduncles long, 

 1 - few-flowered ; corolla salver- form with a slender tube 3' -4' long and the 

 border still broader, white, opening at evening. 



I. Batatas, Sweet Potato. Cult, from East Indies : creeping, seldom 

 twining, smooth, producing the large fleshy edible roots for which the plant is 

 cultivated ; leaves variously heart-sliaped, halberd-shaped, or triangular, some- 

 times cut-lobed ; peduncles bearing 3 or 4 flowers ; corolla funnel-form, purple, 

 Ij' l()ig ; ])od with 4 one-seeded cells. ^ 



I. Michauxii. Light soil along the coast S. : creeping or twining, with 

 heart-slKi])cd or triangular .sometimes lobed leaves downy beneath ; flowers 

 downy ; corolla jnirplish-wliite with purple eye, 3' - 4' long, opening at night; 

 pod partly 4-celled, with silky seeds ; root extremely large and fleshy. ^ 



