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

1. Heterolamium debile (Hemsley) C. Y. Wu, Acta Phytotax. Sin. 10: 254. 1965.

异野芝麻 yi ye zhi ma

Stems suberect, slender, unbranched, 15-40 cm, striate, densely puberulent, glabrescent. Petiole 1.5-5 cm, gradually reduced apically; leaf blade cordate to circular-cordate, sometimes ovate, lower stem leaf blades reniform, 2.5-5 cm wide, membranous, sparsely appressed white strigose, base cordate to subtruncate, margin coarsely crenate, apex obtuse to subacute. Verticillasters in lax inflorescences 4-10 cm; bracts ovate-oblong, ca. 5 × 2.5 mm, margin entire, glabrous; bracteoles linear, ca. 1 mm. Pedicel slender, 4-5 mm. Calyx ca. 4 × 2.5 mm, puberulent, lateral teeth of upper lip triangular, teeth of lower lip subulate-triangular; fruiting calyx ca. 8 × 3 mm, scarious, glabrescent, conspicuously 15-veined, with spinescent-tipped teeth; middle tooth of upper lip reflexed, decurrent, shorter than 2 anterior teeth. Corolla white; tube narrow, exserted, slightly dilated at apex; lobes of upper lip semicircular, as long as lateral lobes of lower lip; middle lobe of lower lip circular, margin entire, slightly concave; lateral lobes ovate, obtuse. Nutlets obscurely rugulose. Fl. Jun, fr. Jul.

* Forests, hillsides, streamsides; 1500-2700 m. Hubei, Hunan, Shaanxi, Sichuan, Yunnan

1 Leaves broadly cuneate at base, widely spaced serrate, adaxially sparsely puberulent; corolla red   1c var. tochauense
+ Leaves cordate to subtruncate at base, crenate or crenulate, adaxially sparsely appressed white strigose; corolla white or dark red to purple-blue.   (2)
2 (1) Leaves coarsely crenate, abaxially greenish; raceme-panicles lax; corolla white   1a var. debile
+ Leaves crenulate, abaxially purplish; raceme- panicles compact; corolla dark red to purple- blue   1b var. cardiophyllum

Lower Taxa


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