Rhododendron joniense Ching & H. P. Yang

Small much-branched shrubs, up to 1 m tall; branches of current year densely ferruginous to dark brown scaly. Petiole ca. 1 mm, scaly; leaf blade narrowly oblong, 1–2 × 0.4–0.7 cm; base cuneate; apex rounded, not mucronate; abaxial surface deep brown, scales contiguous, 2-colored, pale yellow, with many brown scales among them; adaxial surface dark green, scales contiguous or nearly so. Inflorescence 3- or 4-flowered. Pedicel ca. 0.1 cm, scaly; calyx salver-shaped; lobes ca. 0.8 mm, rounded, usually unequal, scales forming a central band, margin ciliate; corolla narrowly funnelform, lavender, ca. 1.6 cm, tube ca. 4 mm, throat pubescent; stamens 10, slightly shorter than corolla, filaments usually pubescent to some extent; ovary ca. 1.5 mm, densely scaly; style to 1.1 cm, slightly longer than stamens, pubescent towards at base. Capsule ovoid, 3–4 mm, densely scaly. Fl. May, fr. Jun.

S Gansu.

Slopes, shady places; ca. 2500 m.

Rhododendron joniense adalah spesies tumbuhan yang tergolong ke dalam famili Ericaceae. Spesies ini juga merupakan bagian dari ordo Ericales. Spesies Rhododendron joniense sendiri merupakan bagian dari genus Rhododendron.

Rhododendron joniense là một loài thực vật có hoa trong họ Thạch nam. Loài này được Ching & H.P. Yang miêu tả khoa học đầu tiên năm 1983.

卓尼杜鹃（学名：Rhododendron joniense）为杜鹃花科杜鹃属下的一个种。