江西蓼属一新变种及其表皮形态特征

A New Variety of Polygonum from Jiangxi and Its Morphological Characters of Leaf Epidermis

描述了产自江西庐山的蓼科（Polygollaceae）蓼属（Polygonum）一新变种——毛叶支柱蓼（Polygonum suffultum Maxim．vat．tomentosum B．Li．et S．F．Chen vat．nov．）。这一新变种与原变种支柱蓼（Polygonum suffultum Maxim．）的区别在于叶片背面密被白色绒毛，下表皮细胞垂周壁浅波状，气孔器类型不等型，气孔长20．15～27．55μm，宽17．45～22．47μm，气孔密度128．91个／mm^2。

Polygonum suffultum Maxim. var. tomentosum B. Li. et S. F. Chen, a new variety of the Polygonaceae from Mt. Lushan, Jiangxi, China, is described. This variety is different from the typical one by haircovering on lower epidermal, sinuolate anticlinal wall of lower leaf epidermal cells and anisocytic type stomas. The stomas are 20. 15 -27.55 μm long,17.45 -22. 47 μm wide,and 128. 91 Num./mm^2 dense.