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3. Polygonum sect. Bistorta (Linnaeus) D. Don, Prodr. Fl. Nepal. 69. 1825.
拳参组 quan shen zu
Polygonum [unranked] Bistorta Linnaeus, Sp. Pl. 1: 360. 1753; Bistorta (Linnaeus) Miller.
Plants without prickles. Leaves lanceolate to ovate or elliptical, margin revolute. Inflorescence a solitary terminal spike. Tepals free or only slightly fused at base. Inner nectaries confluent with inner filament bases. Styles 3, free, entire.
About 50 species: centered in the Arctic and E Asia; 22 species (six endemic) in China.
Synonymy updated after publication of Flora volume.
List of lower taxa
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