Description from Flora of China
Pyrola solunica S. D. Zhao; P. virens Schweigger; Thelaia chlorantha (Swartz) Alefeld.
Herbs 11–18 cm tall. Rhizome long, slender, branched. Aboveground stem very short. Leaves 2–4, basal; petiole 2–5 cm; leaf blade pale abaxially, dark green adaxially, rather dull, suborbicular, 1–1.6 × 1–1.2 cm, leathery, base rounded to acute, margin minutely crenulate, apex rounded. Scape including inflorescence 10–20 cm high, usually with a solitary scale; raceme laxly 2–8-flowered, slightly nutant, nodding, 1.5–3.5 cm. Pedicel 4–5 mm; bracts lanceolate. Flowers cup-shaped, ca. 1 cm in diam. Sepals triangular-ovate, ca. as long as wide, 1–1.5 mm, basal widest 1–1.5 mm, apex ± acute or obtuse. Petals greenish white, ovate or elliptic, 5–6 mm. Filaments dilated at base; anthers yellow, oblong, mucronate at distal end; tubules curved, pores oblique. Style exserted, longer than petals, strongly bent, somewhat thickened upwards, dilated at apex into ring. Capsule ca. 6 mm in diam. Fl. Jun, fr. Aug.
Pinus sylvestris var. mongolica forests; below 1000 m. Nei Mongol [Mongolia].