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FOC | Family List | FOC Vol. 5 | Polygonaceae | Polygonum

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.

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