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

62. Isodon racemosus (Hemsley) H. W. Li, J. Arnold Arbor. 69: 377. 1988.

总序香茶菜 zong xu xiang cha cai

Plectranthus racemosus Hemsley, J. Linn. Soc., Bot. 26: 273. 1890; Amethystanthus racemosus (Hemsley) Nakai; Isodon excisus (Maximowicz) Kudo var. racemosus (Hemsley) Kudo; P. excisus Maximowicz var. racemosus (Hemsley) Dunn; Rabdosia racemosa (Hemsley) H. Hara.

Herbs perennial. Stems erect, 60-100 cm, purplish red, slightly pubescent. Petiole 2-10 mm, puberulent; leaf blade rhombic-ovate, 3-11 × 1.2-4(-4.5) cm, papery or ± membranous, adaxially sparsely minutely hispid to glabrescent, sparsely puberulent on veins, abaxially glabrous, sparsely yellowish glandular, base cuneate-decurrent, margin coarsely dentate to serrate-dentate, apex acuminate; lateral veins 3-paired, slightly elevated. Racemes terminal and axillary, slender, 8-20 cm, pubescent. Flowers mostly in verticillasters, in 3-flowered cymes basally. Pedicel 2-3 mm. Calyx campanulate, to 2.5 mm, pubescent, glandular; teeth spinescent, upper 3 ovate-triangular, lower 2 slightly larger and narrowly triangular; fruiting calyx dilated to 7 mm, slightly curved. Corolla white or reddish, to 1 cm, sparsely puberulent, glandular, tube to 5.5 mm, upper lip to 3.5 mm, lower lip ca. 4.5 mm. Stamens and style slightly exserted. Nutlets yellowish brown, obovoid, ca. 1.5 mm, glabrous. Fl. Aug-Sep, fr. Sep-Oct.

* Grasslands, forests; 700-1500 m. Hubei, Sichuan.


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