绵毛杜根藤 mian mao du gen teng

Calophanoides albovelata (W. W. Smith) C. Y. Wu ex H. P. Tsui.

Herbs 20-50 cm tall, perennial, much branched. Stems basally decumbent then erect and zigzag; young branchlets densely white villous. Petiole 3-5 mm, pubescent; leaf blade lanceolate, 3.5-4.5 × 0.8-1.5 cm, membranous, abaxially villous, adaxially densely white villous, secondary veins 4 or 5 on each side of midvein, base cuneate, margin entire, apex obtuse. Spikes axillary, ca. 1 cm, usually 3(or 4)-flowered; bracts spatulate-circular to obovate, 5-10 × 3-7 mm; bracteoles oblanceolate to linear. Pedicels ca. 2 mm. Calyx grayish green, 5-6 mm, 5-lobed almost to base; lobes linear-lanceolate, with dense white trichomes along veins, apex acuminate. Corolla whitish yellow to yellow, ca. 9 mm; tube slightly longer than limb, outside pilose; lower lip 3-lobed; upper lip short, 2-lobed. Staminal filaments basally hirsute; anther thecae superposed, lower one larger and with a white spur at base. Ovary glabrous. Capsule clavate, ca. 8 mm, glabrous, 4-seeded. Seeds ovate in outline, ca. 1.5 × 1.5 mm, verrucose. Fl. Sep.

● Thickets, streamsides; ca. 2700 m. Yunnan.