宝兴糙苏 bao xing cao su

Roots woody, robust. Stems 0.9-1.2 m tall, basally glabrous, apex minutely retrorse hispid, brownish. Petiole 4-10 cm; stem leaf blades cordate, 11-14 × 7-13 cm, adaxially spreading bristly, abaxially stellate pilose, base cordate to round, margin dentate to deeply crenate, apex acute to caudate-acuminate. Verticillasters apical, many flowered; floral leaves with petiole 0-10 mm, blade 4.5-7 × 1.2-2.8 cm, base cuneate, margin dentate, apex long acuminate; bracts subulate, 6-10 mm, ciliate, puberulent. Calyx tubular, ca. 1.4 × 0.7 cm, dusty puberulent outside, veins bristly; teeth semicircular, margin puberulent, apex tufted hairy inside, spines ca. 2 mm. Corolla purplish; tube ca. 1.1 cm, glabrous except for silky pilose back outside, pilose annulate inside; upper lip ca. 8 mm, margin fringed-denticulate, densely silky pilose outside, long barbate inside; lower lip brown with dark purple spots, ca. 8 × 8 mm, silky pilose, glabrous near margin; middle lobe ovate, ca. 5 × 4 mm; lateral lobes ovate. Stamens included; filaments long hairy, posterior 2 with a hooked reflexed basal appendage. Nutlets glabrous. Fl. Jul.

* Thickets on slopes; ca. 3100 m. Sichuan (Baoxing Xian).