Strobilanthes lachenensis C. B. Cl.

Flowering from July to August.

Strobilanthes lachenensis is occurring in S Xizang of China, Sikkim.

Chloroplast trnL-F sequence data, nuclear ribosomal internal transcribed spacer (ITS) sequence data, and morphology were used to analyze phylogenetic relationships among members of the subtribe Strobilanthinae (Moylan et al., 2004). Results indicate that Hemigraphis, Sericocalyx, and Strobilanthes are nonmonophyletic. Then, a single expanded genus Strobilanthes sensu lato is proposed at the level of the well-supported and monophyletic Strobilanthinae.

Perennial herbs, up to 80 cm tall; stem erect, quadrangular, with lax white patent hairs. Leaves ovate, decurrent, laxly hairy, 6.4 cm long, 4 cm wide, apex acuminate, base obtuse or triangular. Spikes 5-13 cm long, solitary, simple; flowering sessile; bracts sessile, elliptic, ca. 12 mm long, 6 mm wide, green, entire, truncate, exceeding the calyx at the base, caducous; calyx subequally deeply 5-lobed to base, segments narrow; corolla purple, tubular-ventricose, curved above, ca. 1.7 cm long, glabrous with a few scattered lax hairs towards the apex; limb lobes subequal, orbicular; stamens 4, didynamous, anthers oblong, 2-celled, muticous; ovary 4-ovulate, style linear, stigma of one long linear-lanceolate branch, the other suppressed. Capsule 4-seeded. Seeds compressed.

Growing in mountains slopes, forest margins; 2000-3000 m.