罗甸黄芩 luo dian huang qin

Herbs procumbent, much branched. Stems subglabrous. Petiole ca. 1.2 cm at mid stem, sparsely puberulent; leaf blade ovate-lanceolate, ca. 6.2 × 3 cm at mid stem, herbaceous, subglabrous, base cordate, margin remotely undulate-crenate, apex obtusely caudate-attenuate. Racemes lax; floral leaves reduced upward; bracts ovate, margin 1- or 2-undulate-crenate. Flowers axillary. Pedicel ca. 2 mm, puberulent. Calyx ca. 2 mm, puberulent outside, scarlet glandular; scutellum ca. 2.2 mm, to 4 mm in fruit. Corolla yellowish, ca. 2 cm, puberulent outside, apically red glandular, glabrous inside; tube straight, base saccate-geniculate, throat ca. 5 mm wide; middle lobe of lower lip spreading, ovate, ca. 6 mm, sides reflexed; lateral lobes oblong, ca. 4 × 2.5 mm. Nutlets unknown. Fl. Mar-Apr.

* Shaded hillside thickets; 400-800 m. Guizhou.