ae 
ae 
MR. R. ALLEN ROLFE ON THE GENUS VANILLA. 4.4.7 
{ Front lobe of lip acute or apiculate. 
African species. 
a. Leaves broadly lanceolate or elliptic- 
lanceolate. 
i. Column with upper third free from 
lip. 
Leaves 2-5 in. long; front lobe of 
lip triangular 
Leaves 6-7 in. long ; front ‘lobe of 
lip broadly oblong... 
ii. Column with upper two- thirds free 
from lip 
b. Leaves oblong or elliptical- oblong. 
Leaves 4-6 in. long ; front lobe of 
lip acute .... vee 
Leaves 3-32 in. long ; front lobe of 
lip subobtuse ve 
{ Front lobe of lip retuse or emarginate. 
Asiatic species .. 
tt Tube, formed by u union “of sides of lip 
with column, much longer than broad. 
Leaves very broadly otlipticrovate or 
suborbicular ve eens 
Leaves oblong-elliptic or narrower. 
Asiatic species. 
a. Racemes 6 in. long; fruit oblong 
8. Racemes 13-3 in. long; fruit linear- 
oblong or elongate linear. 
i. Fruit elongate-linear. 
Leaves oblong or oblong-lanceolate. 
Bracts numerous, crowded 
Bracts few, lax 
Leaves ovate .... 
ii. Fruit linear-oblong 
American species. 
Leaves elliptic - lanceolate or broadly 
lanceolate, equally tapering at both 
ends 
Leaves elliptic- -oblong to “linear - Ianceo- 
late, not equally tapering at both 
ends. 
Leaves broadly elliptical _.... 
Leaves oblong or narrower. 
10. 
11. 
12. 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
20. 
21. 
22. 
23. 
V. africana. 
— 
”. acuminata. 
V. cucullata. 
V. ramosa. 
V. ovalifolia. 
V. Grifithii. 
V. grandifolia. 
V. philippinensis. 
V. albida. 
V. borneensis. 
V. palembanica. 
V. Moonii. 
V. Sprucet. 
V. hamata. 
