| 1 | Lower surface of the lamina with hairs in the areoles |
| 1' | Lower surface of the lamina with hairs (almost) confined to the veins and veinlets or glabrous |
| 2 | Lamina mostly elliptic to oblong, 3-15 by 1.5-7.5 cm, the base cuneate to rounded; figs usually sessile, the receptacle mostly up to 1 cm diam. when dry; low altitudes |
| 2' | Lamina mostly cordiform to ovate, mostly 13-25 by 9-20 cm, the base mostly cordate to truncate; figs pedunculate, the receptacle 1-1.5 cm diam. when dry; (sub)montane |
| 3 | Margin of the lamina dentate, denticulate or crenate |
| 3' | Margin of the lamina entire or subentire (sometimes sinuate to sublobate) |
| 4 | Stipules only ciliolate or, if hairy outside, then sparsely white puberulous on the keel; lamina 3-7-lobed to -fid also on fertile branches; fig receptacle usually (sub)pyriform and at least 1.5 cm diam. when dry; introduced, fruit tree |
| 4' | Stipules densely hairy or, if sparsely, then at least with some brownish stiff hairs on the keel; lamina 3-7-lobed to -fid usually only on sterile branches; fig receptacle not pyriform or, if subpyriform, then less than 1.5 cm diam. when dry |
| 5 | Waxy glands in pairs, laterally at the base of the petiole |
| 5' | Waxy glands lacking at the base of the petiole, or if present, then inconspicuously and median at the base of the petiole |
| 6 | Stipules 0.4-0.8 cm long, usually brown hairy; fig receptacle 0.7-1 cm diam. when dry |
| 6' | Stipules 0.8-3.2 cm long, usually whitish to yellowish hairy; fig receptacle 1-1.6 (-2) cm diam. when dry |
| 7 | Stipules up to 1 cm long and/or petioles 1-4 cm long |
| 7' | Stipules mostly longer than 1 cm and/or petioles mostly longer than 4 cm |
| 8 | Lamina smooth above |
| 8' | Lamina scabrous to scabridulous above |
| 9 | Lamina cordiform to ovate, entire; stipules c. 1 cm long; fig receptacle 2-2.5 diam. when dry |
| 9' | Lamina elliptic to obovate to oblong to suborbicular, entire or lobed to part; stipules distinctly usually longer than 1 cm; fig receptacle 1-1.6(-2) cm diam. when dry |
| 10 | Lamina cordiform to ovate in outline, base (sub)cordate |
| 10' | Lamina elliptic to oblong to (sub)obovate to pandurate in outline |
| 11 | Stipules finely whitish to yellowish sericeous |
| 11' | Stipules brown sericeous or strigose |
| 12 | Stipules only ciliolate or entirely glabrous |
| 12' | Stipules hairy outside, at least on the keel |
| 13 | Epidermis of the petiole flaking off |
| 13' | Epidermis of the petiole persistent |
| 14 | Stipules lateral; rheophytic shrub |
| 14' | Stipules fully amplexicaul; non-rheophytic shrub or tree |
| 15 | Lamina coriaceous, the apex acuminate to obtuse to rounded, the tertiary venation largely parallel to the lateral veins to reticulate |
| 15' | Lamina chartaceous (to subcoriaceous), the apex acuminate to subcaudate, the tertiary venation loosely scalariform |
| 16 | Lateral veins (8-)10-13(-18) pairs |
| 16' | Lateral veins 4-9 pairs |
| 17 | Waxy glandular spots in pairs at the base of the petiole |
| 17' | Waxy glands absent at the base of the petiole |
| 18 | Periderm of the leafy twigs and/or the epidermis of the petiole flaking off |
| 18' | Periderm of the leafy twigs and epidermis of the petiole persistent |
| 19 | Indumentum of leafy twigs brown(ish) |
| 19' | Indumentum of the leafy twigs whitish or yellowish, often sparse |
| 20 | Lateral veins (7-)10-13(-18) pairs, the basal lateral veins hardly or not different from the other lateral veins |
| 20' | Lateral veins 4-8(-9) pairs, the basal lateral veins ± clearly different from the other lateral veins |
