Maianthemum fuscum var. cordatum R. Li & H. Li, Novon. 12: 489. 2002.
Herbs terrestrial, 20-40 cm tall. Roots uniform, 8-13 per rhizome unit, at nodes and internodes 7-15 cm long. Rhizome a sympodium, 3-8 cm long, the individual units moniliform or subcylindrical, densely connected, 1-1.5 cm in diam., stem scar on node conspicuous, discoidal, ca. 3.4 mm in diam., internodes very short. Leafy stem arcuately ascending, 15-30 cm, green, cylindrical, glabrous; foliage leaves 3-7; internodes 1.5-3 cm. Leaf petiolate, 2-3 cm; blade green, papery, glabrous, ovate-cordate, 7-12 X 4-6.5 cm, abruptly attenuate with an acumen of 1.1-1.8 cm at apex, deeply cordate at base. Inflorescence 5-10 cm, a panicle with 20 flowers, rachis conspicuously zigzagged, glabrous; shortly pedunculate, 8-15 mm, glabrous, bractless. Flowers 3-merous; pedicel tenuous, 4-9 mm, glabrous, with a ca. 1 mm triangular bract at base; perianth purple, subrotate, 5-8 mm in diam., 6-lobed nearly to base, connate part ca. 0.5 mm; tepals ovate, obtuse at apex, outer 3 lobes much smaller, ca. 2 X 2 mm, inner 3 lobes larger, ca. 3 X 3 mm; stamens 6, light yellow, filaments ovoid, carnose, white, ca. 0.5 mm, inserted to base of corolla lobes, anthers small, roundish, yellow, 0.4-0.5 mm, basifixed; ovary ovate, ca. 1 mm, 3-loculed, style very short, pyramidal, ca. 0.4 mm, stigma obscurely 3-lobed. Fl. Apr-May, fr. Jun-Dec.
* Evergreen broad-leaved forests; 1800-3000 m. SE Xizang, NW Yunnan.
Name appeared after publication of the family treatment for the Flora of China.