长萼粗叶木 chang e cu ye mu

Lasianthus longisepalus Geddes; L. longisepalus var. jianfengensis H. S. Lo.

Shrubs, to 2 m tall; branches and branchlets densely yellow villous. Petiole 1-1.5 cm, long, yellow villous; leaf blade subleathery, elliptic-oblong, 11-16 × 3.5-5.5 cm, glabrous adaxially, yellow villous abaxially, base cuneate, apex acuminate; lateral veins ca. 11 pairs, prominent abaxially; nervules parallel, prominent abaxially; stipules generally persistent, narrowly triangular, ca. 3 mm, spreading yellow villous. Inflorescences glomerulate, sessile; bracts inconspicuous. Flowers sessile. Calyx densely pilose; hypanthium portion obconic, 1.5-3 mm; limb with tubular portion 1.5-3 mm; lobes 5-7, linear, 9-14 mm. Corolla tube 12-13 mm; lobes 5-7, lanceolate, 7-8 mm, densely pilose. Fruit subglobose, 6-7 mm in diam., pilose; pyrenes 5-7.

Forests, shaded and wet places; 800-1500 m. Hainan [Thailand, Vietnam].

The sessile flowers with relatively long calyx lobes are quite distinctive.