Merremia

Simões, A. R., Silva, H. & Silveira, P., 2011, The Convolvulaceae of Timor with special reference to East Timor, Blumea 56 (1), pp. 49-72 : 64

Key to the species of Merremia

1. Leaves palmately compound, with 5 leaflets, or palmately 5 –7-lobed.................................... 2

1. Leaves entire or crenate to shallowly or deeply 3-lobed. 3

2. Leaves palmately compound. Leaflets 5, entire, linear, lanceolate or narrowly oblong. Sepals 7.5 –13 mm long, without glandular pellucid dots. Corolla white or pale pink, glabrous outside............................. 5. M. quinata

2. Leaves palmately lobed. Lobes 5 –7, broad triangular to lanceolate. Sepals 12– 20 mm long, with glandular pellucid dots. Corolla bright yellow, with distinctly 5-nerved midpetaline bands........................... 7. M. vitifolia

3. Peduncles very short or nearly absent. Sepals all more or less hairy on the back and long ciliate at the margins. Leaves reniform to broadly ovate............ 2. M. emarginata

3. Peduncles 1–10 cm (rarely up to 16 cm). Sepals glabrous or occasionally slightly pilose on the back and along the margins. Leaves not reniform to broadly ovate........ 4

4. Corolla with midpetaline bands pilose only at their top, 20– 30(– 35) mm long. Stems terete or slightly striate........................ 6. M. umbellata subsp. orientalis

4. Corolla entirely glabrous outside, up to 20 mm long. Stems slender, smooth or minutely tuberculate............. 5

5. Bracts persistent. Corolla white........ 1. M. dichotoma

5. Bracts caducous. Corolla yellow................... 6

6. Corolla up to 12 mm long. Sepals with a distinct mucro, directed outwards.................. 4. M. hederacea

6. Corolla 15– 20 mm long. Sepals not or slightly mucronulate, in which case mucro not directed outwards. 3. M. gemella