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Pakistan | Family List | Labiatae | Isodon

3. Isodon coetsa (Buch. -Ham. ex D. Don) Kudo in Mem. Fac. Sci. Agric. Taihoku Univ. 2: 11. 1929. Li in Journ. Arn. Arb. 69: 368. 1988.

I.C. Hedge

  • Plectranthus coetsa Buch. -Ham. ex D. Don
  • Rabdosia coetsa (Such. -Ham. ex D. Don) Hara

    Perennial aromatic herb, woody at base, 40-120 cm, Stems erect, widely branching, quadrangular, leafy, pubescent with short adpressed, retrorse, simple hairs or glabrescent. Leaves thin-textured, 4-10 x 2.5-6 cm, ovate to broadly ovate, acuminate, serrate, cuneate, with a sparse indumentum of very short eglandular simple hairs above and below and on lower surface densely gland-dotted; petiole up to 4 cm, somewhat winged. Cymes on short slender peduncles forming lateral and terminal racemes. Pedicels slender 1.5-2 mm, spreading-erect. Calyx in flower c. 2 mm, green or purplish with antrorse white hairs and sessile glands; teeth subequal, broad triangular; fruiting calyx c. 4 mm, obliquely campanulate, curved. Corolla pale violet or purplish, c. 6 mm; tube c. 3 mm long rather broad, clearly gibbous at base; lips diverging, lower cucullate entire clearly longer than upper shallowly lobed lip. Nutlets oblong, c. 1.2 x 0.8 mm, smooth, pale or dark brown, mucilaginous on wetting.

    Fl. Per.: August-September. Fr. September-October.

    Type: Nepal, ad Narainhetty, [Buchanan] Hamilton.

    Distribution: Pakistan, Kashmir, Himalayas to Nepal and Bhutan, India, Sri Lanka, Burma, China.

    A widespread Himalayan and Indian species at its westernmost extremity in our area. It usually grows in shaded places or in woodland habitats.


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