无斑梅花草 wu ban mei hua cao

Stems 1-3(-5), 9-13 cm, with 1 leaf proximally. Basal leaves 3-5(-8); petiole 1.5-3.2 cm; leaf blade abaxially greenish, adaxially deep green, cordate, rarely ovate-cordate, 1-1.5 × 0.9-1.4 cm, midvein conspicuous, base deeply cordate, apex rounded or subobtuse. Cauline leaf sessile, semiamplexicaul, ovate-cordate, 6-11 × 6-7 mm, base with a few rusty brown appendages. Flower 1.5-1.9 cm in diam.; hypanthium shallow. Sepals erect at anthesis, oblong, 3-4 × 1.5-2 mm, 3-veined with veins confluent apically, base with a few rusty brown appendages, margin entire, apex subobtuse. Petals white, spatulate-ovate, 7.8-9.5 × 5.2-5.4 mm, base attenuate into a claw ca. 1.7 mm, margin shortly fimbriate proximally, undulate or dentate distally, apex rounded or emarginate. Anthers oblong, 0.8-1.2 mm; filaments ca. 3 mm; staminodes spatulate, flat, 3-lobed to middle, lobes sometimes unequal, stalk ca. 1.5 × 1 mm. Ovary ovoid; style ca. 0.8 mm; stigma 3-lobed. Capsule unknown. Fl. Jul.

* Alpine meadows; 3400-3800 m. NW Yunnan.

In habit, this species resembles Parnassia mysorensis, which differs in having petals with margin entire, erose, or serrate proximally and apex emarginate or 2-cleft, and staminodes with subequal lobes.