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FOC | Family List | FOC Vol. 17 | Lamiaceae | Leucas

6. Leucas martinicensis (Jacquin) R. Brown, Prodr. 504. 1810.

卵叶白绒草 luan ye bai rong cao

Clinopodium martinicense Jacquin, Enum. Syst. Pl. 25. 1760.

Herbs annual, erect, to 60 cm tall. Stems retrorse pubescent. Petiole 0.7-1.5 cm; leaf blade ovate to lanceolate, 4-6 × 1.5-3 cm, reduced upward, densely pubescent, base rounded to cuneate, margin coarsely crenate-serrate, apex acuminate, lateral veins 5 pairs. Verticillasters 1.5-2 cm in diam. in flower, ca. 3 cm in diam. in fruit, many flowered; bracts subulate, ciliate, spinescent. Calyx membranous in fruit, ca. 1 cm, densely villous outside, glabrous inside, veins conspicuous, distinctly net veined; throat enlarged, mouth constricted, oblique; teeth unequal, spinescent, upper teeth longest. Corolla white tinged red, slightly exserted, slender, ca. 8 mm; tube ca. 7 mm, slightly dilated in throat, not villous annulate inside; lower lip subpatent, lobes oblong. Nutlets dark brown, oblong-ovoid, ca. 1.5 mm, shiny. Fl. Sep-Oct, fr. Nov.

Grassy areas, waste land near habitations; 1100-1500 m. Yunnan [India, Myanmar; Africa, North America, South America]

The plants have a strong minty odor and are burned to repel mosquitos. An infusion of leaves is used for gastrointestinal troubles.


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