Convolvulaceae

Simões, A. R., Silva, H. & Silveira, P., 2011, The Convolvulaceae of Timor with special reference to East Timor, Blumea 56 (1), pp. 49-72 : 50

Key to the genera of Convolvulaceae

1. Parasites, lacking chlorophyll, leafless or with minute, scalelike leaves............................ 3. Cuscuta

1. Non-parasitic plants, with green leaves.............. 2

2. Style absent, stigma conical with 10 distinct ridges............................................ 5. Erycibe

2. Style(s) present, stigma(s) otherwise............... 3

3. Styles 2...................................... 4

3. Style 1....................................... 5

4. Styles forked. Stigmas filiform or slightly clavate. Corolla-limb nearly entire.......................... 6. Evolvulus

4. Styles not forked. Stigmas capitate. Corolla-limb distinctly lobed................................. 2. Cressa

5. Flowers in racemose, paniculate or thyrsiform inflorescences (rarely flowers solitary).......................... 6

5. Flowers in one- to few- or many-flowered axillary cymose inflorescences................................. 7

6. Leaf venation pedate, veins prominent, often alate abaxially. Calyx covering 1/4 or less of corolla tube. Stem terete, smooth or striate........................ 4. Dinetus

6. Leaf venation pinnate, veins not prominent and not alate abaxially. Calyx covering half or more of the corolla tube. Stem lenticellate....................... 13. Porana

7. Stigmas 4.......................... 12. Polymeria

7. Stigmas 2.................................... 8 8. Stigmas tongue-shaped............. 9. Jacquemontia 8. Stigmas not tongue-shaped...................... 9

9. Stigmas ovate-oblong, complanate........ 7. Hewittia 9. Stigmas biglobose............................ 10

10. Pollen echinate.............................. 11

10. Pollen not echinate........................... 12

11. Leaf-blades with black dots beneath. Calyx completely enclosing the ripe fruit. Fruit with distinct exocarp and endocarp; the endocarp with two well-developed ridges................................ 14. Stictocardia

11. Leaf-blades without black dots beneath. Calyx not completely enclosing the ripe fruit. Fruit without distinct endocarp....................................... 13

12. Fruit a capsule opening by a more or less fleshy circumscissile lid (operculum) on the upper part of the epicarp. Stems terete or winged...............11. Operculina

12. Fruit a capsule opening by four valves. Stems terete or striate, but never winged....................... 14

13. Fruit a thin-walled capsule opening by valves or irregularly dehiscing............................ 8. Ipomoea 13. Fruit indehiscent, a flesh, leathery berry.... 1. Argyreia

14. Pollen pantoporate. Leaves linear (in some cases nearly filiform), linear-oblong to oblanceolate, spathulate or sub- quadrate; base truncate to hastate; basal lobes obscurely to sharply dentate.................. 15. Xenostegia

14. Pollen 3–12-colpate or 12-rugate. Leaves of various shapes, not as above.........................10. Merremia