Northeastern Asian Flora
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Persicaria posumbu (Buch.-Ham. ex D.Don) H.Gross  
Family: Polygonaceae
[Parexuris tosaensis (Makino) Nakai & Maek., morePersicaria caespitosa (Blume) Nakai, Persicaria posumbu f. albiflora (Iwata) Yonek., Persicaria posumbu var. albiflora Iwata, Persicaria posumbu var. laxiflora (Meisn.) H.Hara, Persicaria posumbu var. stenophylla (H.Hara) Yonek. & H.Ohashi, Persicaria yokusaiana (Makino) Nakai, Persicaria yokusaiana f. laxiflora (H.Hara) Hiyama, Persicaria yokusaiana f. stenophylla (Makino) Hiyama, Persicaria yokusaiana var. laxiflora (Meisn.) H.Hara, Persicaria yokusaiana var. stenophylla (Makino) Honda, Polygonum caespitosum Blume, Polygonum caespitosum subsp. yokusaianum (Makino) Danser, Polygonum caespitosum var. laxiflorum Meisn., Polygonum giranense Ohki, Polygonum kawakamii Ohki, Polygonum posumbu Buch.-Ham. ex D.Don, Polygonum posumbu f. albijlorttm (Iwata), Polygonum posumbu var. laxiflorum (Meisn.) Ohwi, Polygonum posumbu var. pseudobarbatum H.L?., Polygonum posumbu var. stenophyllum (Makino) Murata, Polygonum procumbens Y.L.Chang & S.X.Li, Polygonum pronum C.F.Fang, Polygonum yokusaianum Makino, Polygonum yokusaianum var. stenophyllum Makino, Sciaphila boninensis Tuyama, Sciaphila megastyla Fukuy. & T.Suzuki, Sciaphila tosaensis Makino, Sciaphila tosaensis var. megastyla (Fukuy. & T.Suzuki) S.S.Ying, Seychellaria tosaensis (Makino) T.It?,",",",",",",",",",",",",",",",",",",",",",",",Bot. Mag. (Tokyo) 21: 85"]
Persicaria posumbu image
  • Japan Flora
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Japan Flora: Stems 6-10 cm. long,with 1 or 2 scales; racemes 3- to 8-flowered, the flowers short-pedicellate; staminate flowers on the upper part, 5-7 mm. across, the perianth-segments 6, linear, 25-3.5 mm. long, caudate, gla­brous; stamens 3, with very short filaments; pistillate flowers 4-5 mm. across with 6 lanceolate, acuminate perianth-seg­ments 2-2.5 mm. long; carpels numerous, rugose above, obovoid when mature, 1.3-1.5 mm. long, collected in a globose head 5-6 mm. across.  Aug.-Sept.

Honshu (centr. distr. and westw.),Shikoku, Kyushu; rare.

 

Persicaria posumbu
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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