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FOC | Family List | FOC Vol. 5 | Aristolochiaceae | Asarum

27. Asarum chengkouense Z. L. Yang, Acta Bot. Boreal.-Occid. Sin. 5: 54. 1985.

城口细辛 cheng kou xi xin

Herbs. Rhizomes horizontal, 2-3 mm in diam., internodes less than 1 cm. Leaves solitary; petiole 4-7 cm, pilose; leaf blade abaxially light green to purplish, adaxially white variegated between the veins, ovate-cordate to elongate cordate, 7-9 × 4-8 cm, abaxial surface subglabrous, adaxial surface subglabrous, base cordate, lateral lobes 2-4 × 2-5 cm, apex acuminate; cataphylls lanceolate to broadly ovate, ca. 1.5 × 1-1.5 cm. Peduncle recurved, ca. 1 cm. Calyx campanulate, 3-4 × 2.5-3 cm; sepals connate beyond attachment to ovary, abaxially glabrous; tube subcylindric, 1.2-1.5 × 0.6-1.3 cm, slightly constricted at throat, adaxially corrugate-reticulate, orifice ring ca. 2 mm wide; lobes broadly ovate, 1.5-2 × ca. 1.5 cm, base with papillate-corrugate area. Stamens 12; filaments much shorter than anthers; connectives slightly extended beyond anthers, rounded. Ovary half-inferior. Styles free, apex notched; stigmas lateral. Fl. Jun.

* Forests, mountain slopes; 1000-1200 m. Chongqing.

No specimens were seen; the data above are from the original description and figure.


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