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

93. Polygonum ajanense (Regel & Tiling) Grigorjev in Komarov, Fl. URSS. 5: 666. 1936.

阿扬神血宁 a yang shen xue ning

Polygonum polymorphum Ledebour var. ajanense Regel & Tiling, Fl. Ajan. 116. 1858; Aconogonon ajanense (Regel & Tiling) H. Hara; Pleuropteropyrum ajanense (Regel & Tiling) Nakai.

Herbs perennial. Stems erect, 30-40 cm tall, branched from base. Petiole very short; leaf blade lanceolate or broadly lanceolate, 3-5(-7) × 0.7-1.5 cm, on both surfaces or abaxially strigose, base broadly cuneate, margin entire, ciliate, apex acute; ocrea tubular, membranous, pilose or glabrous. Inflorescence paniculate, spreading, lax; bracts ovate, pubescent or glabrous, each 1- or 2-flowered. Pedicel 2-2.5 mm, apex articulate. Perianth white or pinkish, 5-parted; tepals elliptic, 2.5-3 mm. Stamens 8, included; anthers yellow. Styles 3; stigmas capitate. Achenes included in persistent perianth, brown, slightly shiny, ovoid, trigonous. Fl. Jul-Aug, fr. Aug-Sep.

Grassy slopes; ca. 600 m. NE Nei Mongol [Japan, Korea, Russia (Far East, E Siberia)].


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