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Orthosiphon marmoritis

Description from Flora of China

Plectranthus marmoritis Hance, J. Bot. 12: 53. 1874; Orthosiphon sinensis Hemsley.

Herbs perennial. Stems erect, glandular hispidulous, branches slender, internodes short. Petiole 1.8-2.8 cm; leaf blade ovate to broadly ovate, 2-5 × 1.2-3.8 cm, papery, minutely hispid, golden glandular, base cuneate, margin crenate-serrate, entire near base, apex subacute. Thyrses lax, slender; bracts ovate, ca. 2.5 × 1.5 mm, margin ciliolate, apex short acuminate. Pedicel 2.5-3 mm in flower, to 5 mm in fruit. Calyx rose, broadly tubular, ca. 6.5 × 1.5 mm, minutely hispid; upper lip circular, teeth spinescent; anterior teeth subulate, ca. 2 × as long as triangular lateral teeth; fruiting calyx ca. 1 cm, slightly curved upward, rigid, conspicuously veined, upper lip reflexed. Corolla white, ca. 1.5 cm, puberulent, glandular; tube narrow, slightly curved, base less than 1 mm wide, gradually dilated above middle, to 2.5 mm wide at throat; upper lip ca. 1.5 mm, 4-lobed; lower lip obovate-spatulate, ca. 3 × 2.5 mm. Stamens slightly exserted, anterior 2 slightly longer. Nutlets subtriquetrous, ovoid, rust colored. Fl. Jul-Aug, fr. Aug-Sep.

* Rocky shady areas. Guangdong, Guangxi.


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