麻栗坡兜兰(原变种) ma li po dou lan (yuan bian zhong)

Leaf blade heavily spotted with purple abaxially. Petals 3-5 cm wide; lip subglobose, 3-5 cm in diam. Staminode white, deep purple to black-purple in apical half. Fl. Jan-Apr. 2n = 26.

Grassy slopes or humus-rich soil in forests and thickets in limestone areas; 800-1600 m. SW Guangxi, SW Guizhou, SE Yunnan [N Vietnam].