叶状苞杜鹃 ye zhuang bao du juan

Therorhodion redowskianum (Maximowicz) Hutchinson.

Low small shrubs, ca. 0.1 m tall; branching at base; old branches glabrous; young shoots glandular-hairy. Petiole short; leaf blade thin, spathulate-oblanceolate, 5–15 × 3–6 mm, tapering toward base; margin glandular-ciliate; apex obtuse, with a glandular point; both surfaces glabrous at maturity; veins conspicuous on abaxial surface. Inflorescence 1–3-flowered. Pedicel 0.5–1 cm, glandular-hairy, bearing leaflike hairy bracteoles; calyx deeply 5-lobed to base; lobes linear-oblong, ca. 5 × 2 mm, puberulent on outer surface, margin glandular-ciliate, apex obtuse; corolla rotate, purple-red, ca. 1.5 cm; tube 7–8 mm; outer surface glabrous; lobes 5, broadly oblong, ca. 0.6 × 0.5 cm, finely toothed; stamens 10, slightly shorter than corolla, pubescent below; ovary densely pubescent; style short, ca. 0.5 cm, curved, pubescent below. Capsule ovate, ca. 6 mm. Fl. Jul–Aug, fr. Sep–Oct.

Grasslands on alpine slopes, at foot of rocky cliffs; 2000–2600 m. SE Jilin [Russia (E Siberia)].