描述了采自中国浙江省的蓼科Polygonaceae蓼属Polygonum L.一新种——丽水蓼子草P.lishuiense Z.H.Chen,D.H.Wu,W.Y.Xie et J.F.Wang,并附有线描图.新种形态与蓼子草 P.criopolitanum Hance相似,不同之处在于其茎仅最顶端的节间具腺毛;叶片、叶柄和叶鞘均无腺毛;穗状花序呈圆柱状,长1.5～2.8 cm,直径7～9 mm;每苞片内具2或3花,仅1花可育;花柱2或3;小坚果倒卵状扁球形,双凸镜状,长约1.35 mm,或3棱形,长约1.2 mm,直径约0.7 mm.
Polygonum lishuiense(Polygonaceae),A New Species from Zhejiang Province
Polygonum lishuiense Z.H.Chen,D.H.Wu,W.Y.Xie et J.F.Wang(Polygonaceae),from southern Zhejiang,eastern China,is described and illustrated as a new species.It is similar to P.criopolitanum Hance,but differs in having stem only apicalmost internode glandular hairs,leaf blade,petiole and leaf sheath without glandular hairs,spikes cylindric,1.5-2.8 cm long,7-9 mm in diameter,2-or 3-flowered per bract,only 1 flower fertile,styles 2 or 3,nutlets obovoid,biconvex,ca.1.35 mm long,or trigonous,ca.1.2 mm long,0.7 mm in diameter.
PolygonaceaePolygonum lishuiensenew speciesZhejiang Provinceeastern China
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