紧贴马蓝 jin tie ma lan

Subshrubs to 2 m tall, anisophyllous. Stems somewhat sulcate, bifariously pilose with large-celled trichomes, eventually glabrescent, basally woody; nodes pustulose, pubescent. Leaves basally petiolate, apically sessile; petiole (0-)1-2.5 cm, sulcate, sparsely pilose; leaf blade ovate-elliptic, (4-)6-16 × (1-)3.5-8.5 cm, smaller of pair ca. 2/3 size of larger one, thinly leathery, both surfaces villous with large-celled trichomes especially on veins, secondary veins 9-13 on each side of midvein, curved, and netted near margin, base decurrent onto petiole or those apically on stem amplexicaul, margin shallowly serrate, apex acuminate. Inflorescences terminal, spikes, 5-7 cm; rachis 4-angled, gland-tipped pilose; bracts somewhat imbricate, oblong, 1.1-1.7 × 0.5-0.7 cm, gland-tipped pilose, tardily deciduous as flowers open; bracteoles linear-oblong, 9-15 × 1.2-2 mm, persistent, abaxially gland-tipped pilose, apex acute. Flowers arranged in pairs, erect, ± appressed to rachis. Calyx 1.2-1.6 cm, 2-lipped; lower lip 2-lobed almost to base; upper lip 3-lobed, lobes 12-14 × ca. 1.5 mm. Corolla yellow or blue, outside glabrous, inside glabrous except for trichomes retaining style; tube basally cylindric, ca. 2.5 mm wide for ca. 1.5 cm then gradually ventricose and widened to ca. 1.5 cm at mouth, strongly bent ca. 2.5 cm above base; lobes ovate, ca. 6 × 5 mm, apex obtuse. Stamens 4, included; filaments sparsely pilose, shorter pair ca. 4 mm, longer pair ca. 8 mm; anther thecae oblong, ca. 4 × 1.5 mm. Ovary comose with shortly stipitate glands; style ca. 2.5 cm, pilose. Capsule not seen. Fl. Oct-Dec.

Streamsides in forests; 1500-1800 m. Yunnan (Maguan) [Vietnam].