», iPottEA.] 80. CONVOLVULACM 



8ec. IL Operctilina, Manso ( genus), Stems and 

 peduncles winged. Fls. white tubular? 

 campanulate. Anthers at length twisted. 

 Ovary 2-celled. Capsule with epicarp cir- 

 ca msciss above the middle . . . .7. Turpethum. 

 8ec III. Aniseia, Choisy (genus) Fls. white, solitary 

 on the peduncle, outer sepals oordate much 

 larger than inner. Ovary 2-celled. Cap. 



4-valved 8. martinicensis. 



B. Corolla usually funnel-shaped and purple, some- 

 times blue or white. St. included. Pollen spinescent. 

 Bee. TV. Ipomasa proper. Fls. usually cymose, rarely 

 solitary, anthers straight or twisted. Ovary 2- or 

 4-celled. Capsule 4-valved. 



1. Ovary 2-celled. 



a. L. not distinctly lbbed (sometimes sub-lobed 

 in reptans.) 



+ Corolla V long or less. 

 Peduncles short few-fld. Sep. very unequal in fr. . 9. calycina, 

 Fls. in sessile heads., Sep. sub-equal unaltered 



in fr. . ; . .... 10. hispida. 



Peduncles long 1-3-fld. Corolla ochroleucous, 



purple at base • . . . . .11. obscura. 



+ + Corolla 1\'' long or more. 

 Hirsute, Ped. 1-fld. Sep. $" lanceolate, larger 



in f r. . • . . . . . .12. larlerioidei 



Nearly glabrous. Pod. 1-5-fld. Sep. £'' ovate, 



unaltered in fr.' . . . ' . . .13. reptant. 

 Fls. sub-nmbelled. Sep. ovate £ v Pedicels 



clavate in fr. 14. sepiaria. 



b. L. digitate, palmate or palmately lobed. 



L. palmately-lobed. Fls. |-li''diam. only . 15. pes-tigridis. 

 L. palmate Fls. white 1J 7 diam. Seeds 



glabrous, crested . . . . .16. quinata. 

 L. palmate. Fls. purplish 2" diam. Seeds 



villous . .- . . . .17. pulchella, 



2. Ovary 4-celled. • L. more or less lobed. 



L. palmately 5-7-lobed. Seeds woolly . . .18. paniculata. 



L. angular or somewhat lobed. Seeds glabrous. 



Root tuberous .19. Batatat. 



8ec. V. Pharbitis, Ch&is (genus). Corolla tubular- 

 funnel-shaped. Anthers included. 



Qyary Srcolled,6-ovuled Capsule 3-celled. . . 20. Nil. 

 466 



