118 FAM. 149. 



4-celled. Summer and Fall. ------- Quamoclit 



Q. (Ipomoea) Quamoclit, Cypress-vine. Leaves pinnately parted, segments 

 linear; corolla scarlet. Cultivated and escaped. 



Q. (Ipomoea) coccinea, Red Morning-glory. Leaves entire; carolla scarlet 

 or orange-tinged. Cultivated and escaped. 



3. Corolla funnelform or bell-shaped; stamens and style included, - - - 4 



4. Ovary 1-2 celled; leaves hastate or cordate; — trailing or twining 



vines, or erect herbs or shrubs, with flowers solitary or clus- 

 tered in the axils; calyx naked or bracted; corolla white, pink 

 or purple. --------- Convolvulus, Bind-weed 



C. sepium (Calystegia sepia). Stem twining; leaves broadly sagittate; bracts 

 of calyx ovate or oblong, keeled on the back; corolla white or rose. Waste 

 places. Late Summer. 



4. Ovary 3 or 5-celled; leaves entire, angled or lobed; — climbing or trail- 

 ing herbs, with flowers solitary or in cymes; corolla white, blue, 

 purple, etc. Cultivated. - Pharbitis, Morning-glory 



4. Ovary 2 or 4 celled; leaves entire, angled or lobed; — mainly climbing 

 or trailing herbs, with flowers solitary or in cymes; corolla- 

 limb usually spreading. Summer and Fall. - Ipomoea, Morning-glory 



a. Stems creeping, on the beach, _-____. b 



a. Stems twining or trailing, on sandy soil, ------ c 



b. Leaves ovate to oblong, later fiddle-shaped or lobed; corolla 



white with a yellow throat; seeds woolly. - I. (Batatas) littoral is 



b. Leaves suborbicular; peduncle 1-several flowered; corolla pur- 



ple, limb undulate; seeds pubescent. - - - - I. Pes-Caprae 



c. Leaves palmately 7-parted; — stem twining, branching, hairy; 



corolla white with a purple throat; seeds smooth. Near the 



coast. ---------I. dissecta (sinuata) 



c. Leaves entire or 3-lobed, ------ - - - - <| 



d. Leaves ovate to fiddle-shaped, cordate; peduncles 1-5 flowered; 



corolla white or pinkish, lavender inside; seeds woolly on the 



angles. Dry or damp soil. ------ I. pandurata 



d. Leaves hastate to sagittate, segments linear; peduncles usually 

 1-flowered; corolla purple, seeds villous. Sandy soil. 



I. speciosa (sagittata) 



d. Leaves ovate, entire or deeply 3-lobed, cordate; peduncles 1-3 

 flowered; corolla pink or purple, tube often whitish; seeds 

 smooth. Sandy soil. - - - - I. Caroliniana (commutata) 



The I. (Batatas) edulis, Sweet potato, with 3-5 lobed or angled leaves, and pe- 

 duncles with 3-5 purple flowers, is cultivated for its tubers. 



149. Cuscutaceae, Dodder Family. 



Herbaceous twining parasites with long filiform stems, 

 and minute alternate scales instead of leaves; flowers small, 

 white, in cymes; sepals 4-5, distinct or united; petals 4-5, 

 partly united, with or without scales; stamens 4-5, adnate 

 to the corolla; ovary superior, 2-celled; ovules 2 in each cell; 

 styles 2, mostly distinct; fruit a capsule. "The plant 



