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

55. Isodon angustifolius (Dunn) Kudo, Mem. Fac. Sci. Taihoku Imp. Univ. 2: 137. 1929.

狭叶香茶菜 xia ye xiang cha cai

Herbs perennial, 85-100 cm or more. Stems tufted, puberulent or glabrescent. Leaves opposite; petiole 1-3 mm, puberulent; leaf blade linear-oblong to lanceolate or oblanceolate, 2.2-9.5 × 1-2.4 cm, papery, base narrowly cuneate, margin serrate to subentire, apex acute to obtuse. Panicles terminal or axillary, spreading, to 20(-34) × ca. 10 cm, glandular puberulent; cymes 3-15(-23)-flowered; peduncle 0.4-2.5(-4.8) cm; lower floral leaves ovate-lanceolate to lanceolate, upper ones linear-lanceolate to linear. Calyx campanulate, ca. 4 × 3.5 mm, dull yellow hirtellous, sparsely yellow glandular; teeth ca. 2 mm; fruiting calyx tubular-campanulate, dilated to ca. 7 mm, slightly 2-lipped. Corolla blue, ca. 1.1 cm; upper lip as long as lower, ca. 4.5 mm. Stamens included. Style included. Nutlets purplish brown, compressed to subglobose, ca. 1.8 mm in diam. Fl. Sep-Oct, fr. Oct-Nov.

* Slopes, forests; 1200-3300 m. Yunnan

1 Stem puberulent; leaves subglabrous or puberulent especially on midrib, sparsely yellow glandular; calyx teeth lanceolate-triangular   55a var. angustifolius
+ Stem glabrescent, purplish; leaves elliptic to oblong, glabrous, abaxially densely yellow glandular; calyx teeth ovate-triangular   55b var. glabrescens

Lower Taxa


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