64 XC. CONVOLVULACEH (BAKER AND RENDLE). 
2 outer sepals much longer than the inner . . 5. HInpEBRANDTIA. 
All the sepals accrescent . . c a . 6. CLADOSTIGMA, 
Tripe III. Poraneze.—Flowers generally small and racemose or panicled (in 
sessile or subsessile axillary cymes in Prevostea), Bracts or sepals accrescent. 
Corolla various. Stamens generally included. Styles 2 or single and bifid. Fruit 
one-seeded,— Climbing shrubs. 
*Bracts accrescent . . : : - : . 10. NEUROPELTIS. 
**2 outer sepals accrescent. 
Style unequally bifid, rarely divided to the middle ; 
stizmas ellipsoid to globose . : ; . 11. PREVoSTEA. 
Style deeply bifid ; stigmas linear-oblong . . 12. DIPTEROPELTIS. 
***Sepals not accrescent . : : : : . 18. PoRANA. 
Tripe 1V. Convolvuleze.— Flowers axillary, solitary or dichasial. Sepals 
Sree, rarely accrescent. Corolla funnel-shaped, subentire ; midpetaline areas not 
well defined ; @stivation contorto-plicate. Stamens and style included, Filaments 
dilated at the base and glandular hairy. Ovary 2-celled, 4-ovuled. Style long, 
entire. Fruit a valvate capsule, 2-celled, 4-seeded, rarely with opercular or irre- 
gular dehiscence or indehiscent. 
*Flower subtended by a pair of large foliaceous bracts 17. CaLysrEcra. 
*Flowers not thus subtended, 
+Outer sepals not conspicuously larger than the 
imuer. 
Stigmas elliptic - ‘ : : . 14, JACQUEMONTIA. 
Stigmas filiform . : 2 : . 16. ConvoLvULUs. 
Stigma biglobular. 
Capsule dehiscent, several seeded : . 19. MERREMIA. 
Capsule indehiscent, l-seeded_. : - 20. HyaLocystIs. 
++Outer sepals conspicuously larger than the inner. 
Stigma biglobular : : : : . 15. ANISEIA. 
Stigmas ovate-oblong : : : : . 18. Hewittia. 
B. Pollen grains spinose. 
TRIBE V. Tpomoeeve.— Flowers axillary, solitary or in few- to many-flowered 
cymes, often large and showy. Sepals sometimes much enlarged in fruit, Corolla 
generally funnel-shaped, sometimes more or less campanulate, hypocrateriform or 
urceolate (Lepistemon) ; midpetaline areas well defined; estivation contorto- 
plicate. Stamens and styles included, or sometimes exserted. Filaments with 
dilated glandular-hairy base. Ovary generally 2-celled and 4-ovuled. Style simple ; 
stigma capitate, entire or bilobed, rarely oblong. Fruit generally a 4-valved 
capsule—Habit various, 
*Stamens springing from the base of 5 scales. 
Corolla urceolate Z : s : a . 21. LEPISTEMON. 
Corolla campanulate . : : : : . 22, LEPISTEMONOPSIS. 
**Stamens not attached to scales, 
Pedicel acerescent . : ‘ : é . 28. CALONYCTION. 
Pedicel not accrescent. 
Plants stellately hairy . : : : . 24, ASTROCHLENA. 
Plants not stellately hairy. 
Corolla hypocrateriform, scarlet; genitalia 
exserted ; ovary 4-celled : : . 25. QUAMOCLIT. 
Four above characters not associated. . 26. Ipom@a. 
TRIBE VI. Argyreiew.—As in Ipomeew, but fruit indehiscent, with fleshy or 
woody pericarp. 
Only Tropical African genus = : : “ - 27, ARGYREIA. 
