黄褐杜鹃 huang he du juan

Small, erect shrubs, ca. 0.6 m tall; branchlets covered with dark brown scales. Petiole 1–3 mm, scaly; leaf blade broadly ovate or oblong-elliptic, (0.7–)0.9–1.7 × (0.4–)0.5–1 cm; base broadly cuneate to subcordate; apex obtuse or rounded, mucro obscure; abaxial surface tawny, scales contiguous, usually 2-colored, golden to yellow-brown, some with darker centers; adaxial surface dark green, scales contiguous to separate, pale. Inflorescence 2- or 3-flowered. Pedicel 1–2 mm, scaly; calyx lobes 4–7.5 mm, ovate or rounded, persistent in fruit, scales sometimes present, forming a central band, margin ciliate and rarely with a few scales; corolla funnelform, pale to deep purplish, 1.4–1.8 cm, tube 4–6 mm, outer surface rarely scaly, often pubescent, throat pubescent; stamens usually 10, 1.1–1.5 cm, slightly shorter than corolla, filaments villous towards base; ovary 2–2.5 mm, densely scaly; style 1.4–1.6 cm, longer than stamens, pubescent or glabrous towards base. Capsule ovoid, ca. 5 mm, densely scaly. Fl. and fr. May–Jun.

Alpine meadows; ca. 4600 m. W Sichuan.