Ehretia longiflora Champion ex Benth.

Trees 5-10 m tall; bark dark gray to dark brown, scaly; branches brown; branchlets purple-brown, glabrous. Petiole 1-2 cm, glabrous; leaf blade elliptic to oblong or oblong-oblanceolate, 3-12 × 2-6 cm, glabrous, base cuneate, rarely rounded, margin entire, apex acute; lateral veins 4-7 pairs, reticulate veins inconspicuous. Cymes terminating lateral branches, flat topped, 3-6 cm wide, glabrous or sparsely pubescent. Flowers sessile or on short pedicels. Calyx 1.5-2 mm, glabrous; lobes ovate, inconspicuously ciliate. Corolla white, tubular-campanulate, 1-1.1 cm, base ca. 1.5 mm wide, glabrous; throat 4-5 mm wide; lobes spreading or slightly recurved, ovate to elliptic-ovate, 2-3 mm, shorter than tube. Filaments 8-10 mm, inserted 3.5-5 mm above base; anthers ca. 1 mm. Style 7-8 mm, branches ca. 1 mm. Drupes pale yellow or red, 0.8-1.5 cm in diam.; endocarp ribbed, divided at maturity into 4 1-seeded pyrenes. Fl. Apr.

Fujian, Guangdong, Guangxi, Taiwan [Vietnam].

Open forests, slopes, moist valleys; 300-900 m.

Ehretia glaucescens Hayata.

Dót lá dài (danh pháp: Ehretia longiflora) là loài thực vật có hoa trong họ Ehretiaceae. Loài này được Champ. ex Benth. mô tả khoa học đầu tiên năm 1853.

长花厚壳树（学名：Ehretia longiflora），又名山槟榔、长叶厚壳树，为紫草科厚壳树属下的一种落葉小喬木，高度可達10米，葉互生，橢圓形或倒卵形，花期4月，開密集白色小花，聚繖花序。