| 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 | Densely felted-tomentose or -villous in the areoles, this indumentum covering at least the lesser vein reticulations |
| 2' | Densely puberulous in the areoles as well as on the venation and there intermixed with longer stiff brownish hairs |
| 3 | Lamina with entire (or crenate) margin, usually smooth above, (sub)coriaceous |
| 3' | Lamina with dentate to denticulate margin, usually scabrous to scabridulous above, chartaceous to subcoriaceous |
| 4 | Leafy twigs hollow; fig receptacle when dry 2-3 cm diam. when dry |
| 4' | Leafy twigs solid; fig receptacle 1-1.8 cm diam. when dry |
| 5 | Stipules 1-3.5 cm long, appressed-puberulous to sericeous and on the keel also longer and stiff hairs; fig receptacle predominantly whitish puberulous |
| 5' | Stipules 0.5-1(-1.5) cm long, hirtellous to substrigose with one type of hairs; fig receptacle densely brown hirtellous to subvelutinous |
| 6 | Margin of the lamina dentate, denticulate or crenate |
| 6' | Margin of the lamina entire or subentire (sometimes sinuate to sublobate) |
| 7 | 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 |
| 7' | 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 |
| 8 | Waxy glands in pairs, laterally at the base of the petiole |
| 8' | Waxy glands lacking at the base of the petiole, or if present, then inconspicuously and median at the base of the petiole |
| 9 | Lamina about as long as broad |
| 9' | Lamina distinctly longer than broad |
| 10 | Stipules 0.8-3.2 cm long |
| 10' | Stipules 0.4-0.8 cm long |
| 11 | Lamina ± scabrous above; basal lateral veins up to 1/4-1/3 the length of the lamina |
| 11' | Lamina smooth above; basal lateral veins up to 1/3-1/2 the length of the lamina |
| 12 | Stipules up to 1 cm long and/or petioles 1-4 cm long |
| 12' | Stipules mostly longer than 1 cm and/or petioles mostly longer than 4 cm |
| 13 | Stipules white hairy (subsericeous) |
| 13' | Stipules brown or brownish hairy |
| 14 | Basal lateral veins up to 1/2-2/3 the length of the lamina |
| 14' | Basal lateral veins up to 1/2 the length of the lamina; epidermis of the petiole persistent |
| 15 | Epidermis of the petiole flaking off; figs pedunculate |
| 15' | Epidermis of petiole persistent; figs sessile |
| 16 | Basal lateral veins up to 1/4-1/3 the length of the lamina |
| 16' | Basal lateral veins up to 1/3-1/2 the length of the lamina |
| 17 | Fig receptacle at least 1 cm diam. when dry, hirtellous to hirsute or to subhispidulous |
| 17' | Fig receptacle up to 1 cm diam. when dry, appressed-puberulous |
| 18 | Lamina smooth above |
| 18' | Lamina scabrous to scabridulous above |
| 19 | Lamina cordiform to ovate |
| 19' | Lamina elliptic to oblong to subobovate or subpandurate |
| 20 | Epidermis of the petiole flaking off; fig peduncle 0.4-1 cm long; stipules brown appressed-puberulous to subsericeous |
| 20' | Epidermis of the petiole persistent; figs sessile or with a peduncle up to 0.5 cm long; stipules whitish sericeous (to yellowish subsericeous) or brown hirsute |
| 21 | Basal bracts of the fig 4-5 mm long, yellow appressed-puberulous; petiole varying in length from 2 to 4.5 cm and stipules c. 1 cm long |
| 21' | Basal bracts of the figs 2-3.5 mm long, shortly white sericeous; petiole varying in length from 1 to 14 cm and stipules varying in length from 0.8 to 3.2 cm |
| 22 | Lamina cordiform to ovate |
| 22' | Lamina elliptic to oblong to (sub)obovate to pandurate |
| 23 | Basal lateral veins unbranched or faintly branched |
| 23' | Basal lateral veins clearly branched |
| 24 | Stipules with white to yellow hairs; figs sessile or up to 0.5 cm long pedunculate |
| 24' | Stipules with brown hairs; figs 0.4-1 cm long pedunculate |
| 25 | Stipules only ciliolate or entirely glabrous |
| 25' | Stipules hairy outside, at least on the keel |
| 26 | Epidermis of the petiole flaking off |
| 26' | Epidermis of the petiole persistent |
| 27 | Lamina coriaceous, the apex acuminate to obtuse to rounded, the tertiary venation largely parallel to the lateral veins to reticulate |
| 27' | Lamina chartaceous (to subcoriaceous), the apex acuminate to subcaudate, the tertiary venation loosely scalariform |
| 28 | Lamina with cystoliths (in dry material visible as minute pustules) beneath; fig receptacle 1.2-1.8 cm diam. when dry, the peduncle 0.5-2(-3) cm long; introduced, ornamental shrub or treelet |
| 28' | Lamina without cystoliths; fig receptacle 0.4-0.8 cm diam. when dry, the peduncle 0.1-0.4 cm long or the fig sessile |
| 29 | Waxy glandular spots in pairs at the base of the petiole |
| 29' | Waxy glands absent at the base of the petiole |
| 30 | Epidermis of the petiole persistent |
| 30' | Epidermis of the petiole flaking off |
| 31 | Midrib of the lamina not reaching the apex of the lamina |
| 31' | Midrib reaching the apex of the lamina |
| 32 | Basal lateral veins unbranched; stipules with yellowish hairs |
| 32' | Basal lateral veins branched; stipules with brown hairs |
