| Maximum stem size | 60 × 5–9 mm | 27 × 2–3 mm |
| Leaves | up to 15, linear-lanceolate to falcate leaves, apex strongly acute, 35–95 × 5–8.5 mm | up to 5, obovate, rarely elliptic, apex acuminate to bilobed, 35–156 × 15–48 mm |
| Inflorescence | 16–28 - flowered, up to 151 mm long | 7–45 - flowered, up to 570 mm long |
| Flower colour | perianth pale green, anther cap and column whitish | perianth pale green to yellowish, anther cap and column whitish – yellowish |
| Dorsal sepal | elliptic, 2.3–2.5 × 1–1.2 mm | elliptic to subcircular, 4–4.2 × 3–3.2 mm |
| Lateral sepals | lanceolate, 2.3–2.5 × 1–1.2 mm | oblong-elliptic to slightly obovate, 4–4.3 × 2.5–2.7 mm |
| Petals | elliptic to ovate, 1.2–1.5 × 1–1.2 mm | elliptic to subcircular, 3.1–3.3 × 2.5–2.7 mm |
| Lip | lamina semilunular, minute, convex to slightly concave, ecallose, apex obtuse, 0.7–0.8 × 1.5–1.7 mm | lamina broadly ovate, conspicuous, concave, with a semicircular rim-like callus, apex retuse, 2–2.2 × 4–4.4 mm |
| Spur | 10–12 × 0.5–1.7 mm | 15–17 × 0.5–0.8 mm |
| Column | 1–1.1 × 0.9 mm | 1.8–1.9 × 0.9 mm |
| Rostellum midlobe | midlobe oblong, finger-shaped, slightly prominent, apex rounded, 0.46–0.48 × 0.1 mm | midlobe globose, with a middle vertical depression, 1.5–1.55 × 0.4–0.7 mm |