MOJS'OPETALOUS EXOGENOUS PLANTS. 431 



SYNOPSIS. 



Tkibe I. Convolvuleae. Ovary single. Embryo 

 with leafy cotyledons. Capsule opening by valves. Flowers 

 axillary, single or cymose. 



♦ style single ; stigmas globose. 

 Capsule ^-ceUed^ irseeded. Corolla {red) salver-shaped. Stamens exserted. 



QUAMOCLIT. 



3-celled, the cells 2-seeded. Corolla bell-formed Pharbitis. 



** Style single ; stigmus ovate or cylindrical. 



Capsule imperfectly 2-ceUed, i-seeded. Stigmas cylindrical. Calyx included in the 



meml)ranac€ous bracts Calystegia.. 



Styles separate, 2-parted or deleft Evoltultjs. 



*** Styles 2, separate o?' partly united ; ovary 2-ceUed. 



Styles separate or partly united, entire Stylisma. 



Tribe II. Cuscuteae. Ovary single. Emlryo desti- 

 tute of cotyledons. Capsule closed. 



Twining jparasites^ with scale-like leaves. Styles 2 Cuscuta. 



QUAMOCLIT, Tourn. Cypkess-vine. 



Sepals 5; corolla salver-form, 5-plaited, with the tube 

 elongated ; stamens inserted at the base of the tube, dilated 

 at the base, exserted; ovary 4-celled; style single; stigma 

 globular, 2-lobed; capsule 4-valved, 4-seeded. — Twining 

 annual herbs, with cordate entire or pinnatihd leaves, and 

 red flowers, on axillary peduncles. 



Q. coccinea, Mcench. Leaves petioled, cordate, acumi- 

 nate, angled at the base ; peduncles as long as the petioles, 

 3-5-flowered ; sepals awned ; corolla slightly lobed, scarlet 

 (Ipomoea coccinea, L.) Cultivated ground, in Middle and 

 Upper Texas, and northward. July and August. Corolla 

 r long, sonietimes yellowish. 



