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

15. Asarum ichangense C. Y. Cheng & C. S. Yang, J. Arnold Arbor. 64: 579. 1983.

小叶马蹄香 xiao ye ma ti xiang

Herbs. Rhizomes vertical, 2-3 mm in diam., internodes 0.5-1 cm. Leaves solitary; petiole 3-15 cm, glabrous; leaf blade adaxially dark green, with white patches along midvein, cordate or ovate-cordate, rarely subhastate, 3-6 × 3.5-7.5 cm, abaxial surface glabrous, adaxial surface puberulent along veins and margin, base cordate, lateral lobes 2-4 × 2.5-6 cm, apex acute or obtuse; cataphylls ovate or oblong, ca. 1 × 0.7 cm. Peduncle recurved, ca. 1 cm. Calyx purplish green to dark purple, campanulate-urceolate, 1-1.5 × 1-1.5 cm; sepals connate beyond attachment to ovary, abaxially glabrous; tube globose, ca. 1 × 1 cm, apically constricted and abruptly dilated to lobes, adaxially tessellate, orifice ring ca. 1 mm wide; lobes triangular-ovate, 1-1.4 × 0.8-1 cm, base corrugate-papillate. Stamens 12; filaments much shorter than anthers; connectives slightly extended beyond anthers, obtuse, shallowly notched. Ovary superior. Styles free, apex subtruncate; stigmas terminal. Fl. Apr-May.

* Forests, along streams, moist shady areas, open grasslands; 300-1400 m. Anhui, Fujian, Guangdong, Guangxi, Hubei, Hunan, Jiangxi, Zhejiang.


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