Morphological characteristics
Plant shape
Herbs perennial, 7-30(–46) cm tall; rhizome skewed, covered
Old leaf sheath, with scent.
Basal leaves clustered, linear narrowly obovate, 4-14 cm long, 0.5-1.2 cm wide, 3-5 out of main vein, obtuse at front, base attenuate, petiole reduced, entire, margin marginally only eyelash. Off the flower stem, 1-2 pairs of stem leaves, opposite, sessile, oblong-shaped linear.
Cymes head-shaped, terminal, after the main axis of the flower and the lateral axis are often significantly elongated, so that the cymules arranged in an aggregate. Total sepals lanceolate, 0.5-2 cm long, 0.2-0.4 cm wide, bracts and bracteoles often lanceolate or broadly ovate. Calyx small, 5-lobed, lobes semi-circular, glabrous, entire, thick, veins obscure. Corolla purple-red, bell-shaped, 7-11 mm long, tube outer hairs, base basal projections; corolla lobes 5, broadly ovate, obtuse anterior, 3-4.5 mm long, 2-4 mm wide; corolla tube Parts with long bristles; stamens 4, protruding from corolla lobes, filaments pilose; ovary subordinate, style as long as stamens, stigma capitate.
Achenes obovate, ca. 3 mm, glabrous; calyx unequal 5-lobed, lobes semi-circular to broadly triangular, 0.8-1.2 mm long, smooth and glabrous.
Medicinal traits
Medicinal use more curved, thicker and thinner, length 5-18cm. Short rhizomes with residue on the top
Stem base, outer layer of multi-stemmed base, membrane-like or fibrous, outer brownish black, inner brown or yellow. Single root, some intersecting, juxtaposed or branched, 6-16cm long, 0.3-1cm in diameter; surface shrinking, brown, with fine roots and fibrous roots. Crisp, brittle, rough section, dark brown skin, often split sheet, yellow and white wood. Gas-specific, leaf bitter, pungent, cool feeling.
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