| Indumentum of branches and petioles | Velutinous, branches glabrescent | Glabrous to very sparsely pubescent |
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| Petiolar extrafloral nectary (shape, size) | Fusiform, usually immersed, sometimes slightly prominent, darkened, 3–4 × 0–0.5 mm | Verruciform with an elongated base, usually darkened, 2–3 × 1–2 mm |
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| Number of pairs of pinnae | 5–6 | (4–)5–7(–8) |
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| Petiolules of 2nd degree | 0.2–0.3 mm long, densely yellow-velutinous | 1.5–2 mm long, glabrous |
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| Extrafloral nectaries of the rachillae (number, shape) | 2–4, verruciform to fusiform | 1, verruciform |
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| Shape of leaflets (except distal and proximal pairs) | Slightly asymmetrical, usually orbicular, sometimes widely elliptic to ovate | Asymmetrical, ovate to widely ovate, sometimes elliptic |
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| Size of leaflets | (1.1–)2–2.6 × (–1.1)1.6–2.4 mm | 1.5–3.5(–6) × 1–2.5(–6) mm |
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| Indumentum of leaflets | Puberule-velutinous on both surfaces, more densely at the lower surface | Glabrous |
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| Unilateral tuft of trichomes on the lower surface | Present, usually prolonged up to the 2nd or 3rd pairs of secondary nerves | Present, not prolonged |
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| Indumentum of the rachis of the spike | Densely yellow-velutinous | Sparsely pubescent |
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| Stamen length | 8–9 mm | 5–8 mm |
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| Ovary indumentum | Glabrous to white-pulverulent, glabrescent | Glabrous |
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| Prophylls | Late deciduous, densely yellow-tomentose and ferruginous-pulverulent | Deciduous, tomentose |
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| Fruits | Flat-compressed | Turgid |
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