| 1 | Hairs (partly) uncinate |
| 1' | Hairs straight, curved or ± crinkled |
| 2 | Leaves spirally arranged |
| 2' | Leaves distichous |
| 3 | Stipules fully amplexicaul, leaving annular scars (or only some of them semi- amplexicaul) |
| 3' | Stipules semi-amplexicaul to lateral, the scars not meeting opposite the base of the petiole |
| 4 | Stipules (0.5-)1-2.8 cm long |
| 4' | Stipules 0.2-1(-1.3) cm long |
| 5 | Stipules dark brown when dry; base of the lamina ± distinctly inequilateral and one side ± clearly decurrent and often slightly to clearly (minutely) auricled; often additional waxy glands in the axils of the 2nd to 4th pairs of lateral veins or the single waxy gland in such positions and not in the axils of the basal lateral veins |
| 5' | Stipules greenish to pale brown when dry; base of the lamina hardly unilaterally decurrent and the waxy glands, 1 or 2, in the axils of the basal lateral veins |
| 6 | Epidermis of the petiole flaking off |
| 6' | Epidermis of the petiole persistent |
| 7 | Midrib of the lamina impressed above; basal lateral veins often 1/3-1/2 the length of the lamina |
| 7' | Midrib prominent of the lamina to flat above; basal lateral veins up to 1/8-1/3 the length of the lamina |
| 8 | Lamina asymmetric; fig receptacle 0.5-1 cm diam. when dry |
| 8' | Lamina symmetric to slightly asymmetric; fig receptacle 0.2-0.3 cm diam. when dry |
| 9 | Basal lateral veins up to 1/2-2/3 the length of the lamina; tertiary venation largely perpendicular to the midrib |
| 9' | Basal lateral veins up to 1/8-1/4 the length of the lamina; not largely perpendicular to the midrib |
| 10 | Basal lateral veins up to 1/4 the length of the lamina; waxy glands mostly unilateral; lamina glabrous and smooth above |
| 10' | Basal lateral veins up to 1/4-1/2 the length of the lamina; waxy glands bilateral; lamina often minutely hairy or also ± scabrous above |
| 11 | Basal lateral veins running ± remotely from the margin of the lamina, branched; apex of the lamina shortly acuminate to rounded |
| 11' | Basal lateral veins running close to the margin of the lamina, unbranched; apex of the lamina acuminate to caudate |
| 12 | Stipules 1-2.3 cm long |
| 12' | Stipules 0.3-1(-1.2) cm long |
| 13 | Stipules caducous |
| 13' | Stipules (sub)persistent |
| 14 | Lamina asymmetric, puberulous to hispidulous and often ± scabrous above |
| 14' | Lamina almost symmetric, glabrous and smooth above |
| 15 | Basal lateral veins up to 1/4-1/3(-12) the length of the lamina; peduncle 0-1 cm long |
| 15' | Basal lateral veins up to 1/10-1/5 the length of the lamina; peduncle 1.2-2(-3) cm long |
| 16 | Epidermis of the petiole flaking off |
| 16' | Epidermis of the petiole persistent |
| 17 | Midrib of the lamina impressed above; peduncle usually 0.5-1.5 cm long |
| 17' | Midrib of the lamina prominent above; peduncle 1-0.3 cm long |
| 18 | Waxy glands 2, in the axils of both basal lateral veins; |
| 18' | Waxy gland 1, in the axil of one of the basal lateral veins, or also additional ones in the axils of other lateral veins |
| 19 | Lamina smooth; waxy glands only in the axil of one of the basal lateral veins |
| 19' | Lamina scabrous, at least above; additional waxy glands mostly present in the axils of other lateral veins than the basal ones |
