糙叶山蓝 cao ye shan lan

Herbs 40-100 cm tall, annual. Stems 6-angled, pubescent. Petiole 1.5-2.5 cm; leaf blade ovate to lanceolate-ovate, 7-13 × 3-5.5 cm, both surfaces densely pubescent, secondary veins 6-8 on each side of midvein, base broadly cuneate, margin entire, apex acuminate to shortly caudate. Cymes terminal or axillary, 3(or 5)-branched, with 3-5 involucres; peduncle ca. 4 mm; outer involucral bracteoles ovate, ca. 5 × 2 mm, concave, apex aristate; inner involucral bracteoles subulate, ca. 2.5 mm. Calyx ca. 5 mm; lobes linear-lanceolate, apex acuminate. Corolla purple, ca. 4.2 cm, outside pubescent; tube basally cylindric for ca. 2.4 cm; lip in lower position elliptic-obovate, ca. 1.6 × 0.6 cm, apex obtuse to retuse; lip in upper position oblong, ca. 1.6 × 0.5 cm, slightly narrowed at tip, 3-lobed, lobes suboblong and ca. 1 × 1 mm. Staminal filaments ca. 1 cm, pubescent; anther thecae linear, parallel, inserted at different levels. Ovary oblong, ca. 2 mm, pubescent; style ca. 3.5 cm, glabrous. Capsule clavate, ca. 1.7 cm, densely strigose-pubescent. Seeds ca. 2.5 × 2 mm, tuberculate-punctate. Fl. Nov-Jan, fr. Jan-Mar.

● Dense forests. Hainan.