| Habit | Tree, 15 m | Tree, 5 m | Tree, 15 m |
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| Branchlets | Rusty tomentose | Glabrous | Glabrous |
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| Leaves | 7–16 × 3–8 cm, oblong, elliptic to obovate; base acute, apex obtuse, margins incurved, rusty tomentose, rigidly coriaceous | 12–13 × 4–6 cm, elliptic-lanceolate, base acute to obtuse, apex acute to acuminate, margins incurved, glabrous, thinly coriaceous | 10–16 × 3–6 cm, oblanceolate, elliptic-oblong or elliptic-lanceolate, base acute to cuneate, apex acute to attenuate, margin flat, glabrous, coriaceous |
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| Petiole | 10–20 mm long, rusty-tomentose, slightly grooved adaxially, rounded abaxially | 8–10 mm long, glabrous, flat adaxially and rounded abaxially | 10–15 mm long, glabrous, slightly grooved adaxially |
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| Lateral veins | 8–12 pairs of secondaries, rusty tomentose; tertiary veins prominent and scalariform reticulation, marginally looped | 9–11 pairs of secondaries, glabrous; tertiary veins prominent, sub-scalariform and finely reticulate | 9–12 pairs of secondaries, glabrous; tertiary veins obscure, faintly reticulate |
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| Brachyblasts | 4–10 cm long, rusty tomentose | 4–7 cm long, densely puberulent | 5–12 cm long, silky-appressed hairy |
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| Peduncle of umbels | 4–6 mm long, rusty tomentose, terete | 5–10 mm long, densely puberulent, sub-terete | 5–8 mm long, sparsely tomentose, terete to angular |
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| Involucral bracts | 5–8 × 3–5 mm, obovate, ferrugineous-tomentose outside and glabrous inside, nerves obscure | 3–5 × 4–5 mm, orbicular, obovate, fulvous-tomentose outside, glabrous inside, 6-nerved | 5–6 × 3–4 mm, obovate, greyappressed hairy outside, glabrous inside, 5-nerved |
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| Staminal glands | Sessile | Stipitate | Stipitate |
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| Pistillode | Absent | Present | Absent |
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| Ovary | Ca. 1 mm long, ovoid, glabrous | Ca. 1.5 mm long, ellipsoid, sparsely pubescent | Ca. 2 mm long, ovoid, glabrous |
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| Fruit | 1.2–1.6 × 0.8–1.0 cm, ovoid | 1.2–1.9 × 0.9–1.2 cm, ellipsoid | 1.0–1.6 × 0.5–0.8 cm, ovoid |
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| Cupule (length × diameter) | 0.5–0.8 × 0.6–0.8 cm, sparsely pubescent, margin entire | 0.6–0.8 × 0.5–0.8 cm, puberulent, margin entire, cleft at maturity | 0.7–0.8 × 0.5–0.7 cm, glabrous, margin entire |
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| Fruiting pedicel | 0.2–0.8 cm long, angular, sparsely pubescent | 0.9–1.2 cm long, sub-terete to angular, glabrous | 0.2–0.8 cm long, terete, sparsely silky-pubescent |
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