Nomocharis leucantha I. B. Balfour; N. mairei H. Léveillé; N. mairei f. candida W. E. Evans; N. mairei f. leucantha (I. B. Balfour) W. E. Evans; N. pardanthina f. punctulata Sealy.

Bulb ovoid-globose, 2.5--3.5 × 2--3.5 cm. Stem 25--90 cm. Proximal leaves alternate, distal ones whorled, elliptic to lanceolate-elliptic, 2.5--7 × 1--3 cm. Flowers 1 to several. Tepals white or pink, usually with a dark purple blotch at base; outer ones laxly spotted purple-red, ovate, 2.5--3.5 × 1.2--2 cm, margin entire; inner ones densely or laxly spotted or blotched purple-red, ovate to orbicular, 2--3 × 1.5--2 cm, margin usually erose or lacerate; nectary processes 2, of purple-red, fleshy ridges of tissue arranged in a fan shape. Filaments swollen, cylindric, 6.5--7 mm, and fleshy proximally, abruptly narrowed to a filiform, 2--2.5 mm long portion distally. Style 6--8 mm. Fl. May--Jul, fr. Jul--Aug. 2 n = 24*.

* Forest margins, grassy slopes; 2700--4100 m. SW Sichuan, NW Yunnan.