长序白珠 chang xu bai zhu

Shrubs to 3 m tall. Twigs ?terete, glabrous. Petiole 1–2 mm, adaxially puberulous, ciliolate; leaf blade obovate or elliptic-obovate, 3–6.5 × 1–2.5 cm, abaxially sparsely punctate, glabrous, adaxially sparsely punctate, puberulous on midvein, secondary veins 4 or 5 pairs, base cuneate, margin closely serrate, ciliolate towards base, apex acute. Inflorescences terminal and axillary, racemose, 10–12 cm, many flowered; rachis angled, puberulous; bracts broadly ovate, 3–4 mm, ciliolate. Pedicel 4–6 mm, sparsely hairy; bracteoles 2, apical, ovate-lanceolate, ca. 1.5 mm. Calyx lobes angled, ca. 1.5 mm, abaxially glabrous, ciliolate, apex acute. Corolla white, tubular-ovoid, ca. 5 mm, abaxially sparsely setulose on veins; lobes recurved, triangular. Filaments ca. 1.5 mm, glabrous; thecae 2-awned. Ovary densely puberulous. Fruit unknown.

Woods; ca. 3000 m. WC Sichuan (Baoxing).