| Stem | subcylindrical, striate and sulcate, conspicuously verrucose except for shoot, puberulent at nodes | 3-angled, angles winged, glabrous or sparsely puberulent at nodes | subcylindrical, striate and sulcate, glabrous | subcylindrical, striate and sulcate, glabrous |
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| Leaves | (5–)9(–11)-foliolate, leaflets oblong or obovate-elliptic, papery; central leaflet 7–15 × 2–4 cm; petiole 10–22 cm | 7-foliolate, leaflets rhombic-elliptic or obovate-elliptic, papery; central leaflet 6–12 × 2–4 cm; petiole 5–8 cm | 7-foliolate, leaflets elliptic or elliptic-ovate, membranous; central leaflet 3.5–6.5 × 2–2.5 cm; petiole 5–12 cm | 3–7-foliolate, leaflet ovate-elliptic or obovate, papery or membranous; central leaflet 3–4.5 × 1.5–2.5 cm; petiole 4–8 cm |
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| Fruit | capsule, 2-compressed obtriangular lobed, 8–10 × 14–18 mm; fruit stalk 3–7 cm; tip slightly convex | capsule, 2–3-compressed globose lobed, 2.5–3 × 5–6 mm; fruit stalk 0.3–0.6 cm; tip slightly concave | Capsule, 2-compressed obtriangular lobed,5–8 × 5–7 mm; fruit stalk 1.3–2.5 cm; tip slightly concave | capsule, 2–3-compressed globose lobed, 4–5 × 5–6 mm; fruit stalk 0.7–1.8 cm; tip slightly concave |
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| Seed | seeds 2, obtriangular, 5–6 × 7–8 mm, spiniform-tuberculate, margin serrate and sulcate, acute verrucae inside groove | seeds 2–3, broadly cordate, ca. 2 × 3 mm, spiniform-tuberculate | seeds 2, obtriangular, ca. 3 × 3.5 mm, tuberculate, margin crenate and sulcate | seeds 2–3, oblong or subglobose, ca. 2.5 × 2.2 mm, verruculose, margin crenate and sulcate |
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