12. Parnassia labiata Z. P. Jien, Acta Phytotax. Sin. 8: 253. 1963.
宝兴梅花草 bao xing mei hua cao
Stem 1 or 2(or 3), occasionally branched, elongate, 5-12 cm, with 1 leaf near middle. Basal leaves forming a rosette; petiole 1.5-3 × as long as leaf blade; leaf blade abaxially greenish, inconspicuously brown punctate, adaxially deep green, rhomboid, ovate- or obovate-rhomboid, or suborbicular, 2-3 mm, arcuate 5-veined abaxially, base cuneate, apex subobtuse, often minutely apiculate. Cauline leaf sessile, amplexicaul, rhomboid-elliptic, ca. 2 mm, base with several brown, membranous appendages. Flower 5-10 mm in diam.; hypanthium inconspicuous. Sepals spreading, oblong-lanceolate or triangular-lanceolate, ca. 3 × 1 mm, midvein conspicuous, margin entire, apex rounded. Petals white, brown punctate, broadly elliptic or ovate-elliptic, ca. 5 × 3 mm, 3-veined, base rounded, abruptly contracted into a claw ca. 1 mm, margin entire, apex obtuse or apiculate. Anthers ellipsoid, ca. 0.8 mm; filaments unequal; staminodes minutely red punctate, stalk slender, lamina 2-lobed, 2-labiate, abaxial lobe entire and ligulate, adaxial lobe flat, digitately 2-5-fid. Ovary superior, ovoid or oblong; style usually conspicuous; stigma 3- or 4-lobed. Capsule ovoid, ca. 3 mm. Seeds brown, glossy. Fl. Aug-Sep, fr. Sep.
* Grassy slopes; ca. 1000 m. W Sichuan (Baoxing Xian).