Compilation
Nervilia humilis

Erect terrestrial herb 1.5–10 cm tall, glabrous except for leaf, lip and subterraneanan parts.Tuber 0.5–1.4 cm in diameter, subspherical or ovoid, (2)3–6-noded.Leaf solitary, appearing after flowering, prostrate or nearly so, 1.5–9 × 3.5–14 cm, reniform to almost orbicular, usually densely pubescent on the upper surface, but glabrous clones or clones with hairs only near the leaf margin not uncommon; veins (5)7–16; petiole c. 0–6 cm long, sulcate with 1–3 sheathing cataphylls.Scape erect, terete, 1-flowered, with 2–3 sheathing cataphylls, lengthening to c. 20 cm when fruiting.Flower ± erect, fragrant; bract 1–2 mm long.Sepals and petals spreading, closing again after about 8 hours anthesis or earlier if pollinated, subequal, linear-ligulate, acute, brownish-green; lateral sepals oblique, 12–19 × 3.5 mm; petals slightly shorter and narrower.Lip oblong-cuneate, 12–18 × 9–11 mm, 3-lobed, white with a yellow centre and often with a faint lilac or purple tinge or markings in the apical area; inner surface ±covered with thin hair-like outgrowths and a few thicker formations arranged ± in three rows along the centre of the mid-lobe and ranging from low tubercles to long, acute, tapering emergences of different appearance; lateral lobes obtusely triangular or rounded, sometimes less prominent or absent; mid-lobe ovate-triangular to ovate, subacute to obtuse; margin crenulate to undulate-fimbriate.Column almost straight, (5.5)7–9 mm long, clavate, glabrous; pollinia yellow with a few purplish massulae at lower end, (0.8)1.5–2 mm long; ovary 4–5 mm long.