206 
CONVOLVTTLACExE. 
\lpomcea. 
celled ; ovules 1-2 in a cell ; style filiform ; stigma with two 
capitate lobes. Capsule membranous, splitting up mostly into four 
valves. — Climbing or trailing herbs or shrubs, with simple or compound 
leaves and mostly large showy flowers. Distrib. Round the world in 
the warmer regions. Species 300 or more. 
Series 1. Corolla broadly funnel-shaped, with short stamens. 
Subgenus 1, Ipomcea proper. Ovary 2-celled with two ovules in 
each cell. 
Leaves divided. 
Stems and leaves glabrous. 
Leaflets sessile or joined at the base. 
Sepals above an inch long * I. tuberosa. 
Sepals £ inch long 1. I. cairica. 
Leaflets stalked 2. I. Hornei. 
Stems and leaves pilose. 
Flowers 1-3 together stalked 3. I. sinuata. 
Flowers many in a dense head 4.1. pes-tigridis. 
Leaves simple. 
Stems and leaves glabrous. 
Leaves peltate 5. I. peltata. 
Leaves cordate. 
Flowers in cymes 6. I. cymosa. 
Flowers solitary 7. I. leucantha. 
Stems and leaves pilose. 
Slender annual herb 8. I. obscura. 
Suflruticose perennial 9. I. Turpethum. 
Subgenus 2, Pharbitis. Ovary 3- rarely 4-celled ; ovules two in a 
cell. 
Leaves entire. 
Stems and leaves finely silky * I. purpurea. 
Stems and leaves densely clothed with thick spreading 
hairs 10. I. fragrans. 
Leaves 3-lobed * I. Nil. 
Subgenus 3, Batatas. Ovary 4-celled ; ovules one in each 
cell. 
Stems and leaves pilose. 
Annual twiner, with 5 distinct leaflets * I. pentaphylla. 
Perennial trailer, with entire or little-lobed leaves . . * I. Batatas. 
Stem and leaves glabrous. 
Shrubby climber, with leaves palmately lobed . . . 11. I. paniculata. 
Shore trailers. 
Peduncle 1-flowered 12. I. acetos^folia. 
Peduncle 1-6-flowered 13. I. pes-capr^:. 
Series 2. Corolla hypocrateriform or nearly so, with long stamens. 
Subgenus 4, Calonyction. Corolla large, white. 
Stems unarmed 14. I. glaberrima. 
Stems armed with copious prickles * I. muricata. 
Subgenus 5, Quamoclit. Corolla small, bright red. 
Leaves entire or slightly lobed, cordate 15. I. coccinea. 
Leaves pinnate, with linear leaflets * I. Quamoclit. 
