中国四川荞麦属（蓼科）一新变种——翅果密毛野荞麦

描述了蓼科一新变种——翅果密毛野荞麦Fagopyrum densovillosum J. L. Liu var.pterocarpum J. L. Liuet X.J.Li],并绘制了形态图。新变种瘦果较大,长2.5～3mm,宽(2～)2.5～3mm,果棱上具翅,翅宽0.5～1mm,雄蕊长于雌蕊,从而区别于原变种密毛野荞麦(Fagopyrum densovillosumJ.L.Liu);另外,新变种全株密被短毛或长毛,茎枝较粗壮,红褐色,节较密集,叶片在表面具细皱纹和小泡状突起,雄蕊长于雌蕊,而又不同于齿翅野荞麦Fagopyrum gracilipes(Hemsl.)Damm.et Diels var. odontopterum(Gross)Sam]。

Fagopyrum densovillosum var.pterocarpum (Polygonaceae),A New Variety from Sichuan,China

Fagopyrum densovillosum J.L.Liu var.pterocarpum J.L.Liu et X.J.Li,a new variety of the Polygonaceae from Sichuan,China,is described and illustrated.It is different to Fagopyrum densovillosum J.L.Liu by its major achenes,2.5～3 mm long and(2～) 2.5～3 mm in diameter,winged on the angular,wings 0.5～1 mm wide,stamens longer than pistils.In addition,the new variety is also different to Fagopyrum gracilipes(Hemsl.) Damm.et Diels var.odontopterum(Gross) Sam by its densely pubescent or villose plants,thicker and red-brown stems and branches,dense nodes,rugulose and small pustulate leaf blade on the surface,stamens longer than pistils.