荷叶铁线蕨(Adiantum reniforme L.var sinense)属铁线蕨科铁线蕨属植物.植株高5～20厘米.根状茎短而直立,先端密被棕色披针形鳞片和多细胞的细长柔毛.叶簇生,单叶;柄长3～14厘米,粗0.5～1.5毫米,深栗色,基部密被与根状茎上相同的鳞片和柔毛,向上直达叶柄顶端均密被棕色多细胞的长柔毛,但干后易被擦落;叶片圆形或圆肾形,直径2～6厘米,叶柄着生处有1或深或浅的缺刻,两侧垂耳有时扩展而彼此重叠,叶片上面围绕着叶柄着生处形成1～3个同心圆圈,叶片的边缘有圆钝齿牙,能育叶由于边缘反卷成假囊群盖而齿牙不明显,叶片下面被稀疏的棕色多细胞的长柔毛.叶脉由基部向四周辐射,多回2歧分枝,2面可见.叶干后草绿色,天然枯死呈褐色,纸质或坚纸质.囊群盖圆形或近长方形,上缘平直,沿叶边分布,彼此接近或有间隔,褐色、膜质,宿存. Adiantum wire fern (Adiantum reniforme L.var sinense) is a wire fern Pteridophyte plant height of 5 to 20 cm. Rhizome short and erect, apex densely brown lanceolate scales and multicellular Stems 3 to 14 cm long, 0.5-1.5 mm thick, darkly maroon, base densely covered with scales and pilose on rhizomes, uptight to petiole apically densely brownish Cellular villous, but easily eased off when dry; leaf blade round or kidney-shaped, 2 to 6 cm in diam., Petiole with a deep or shallow birth place nicks, lilac on both sides sometimes extended to each other Overlapping, above the blade around the petioles with the formation of concentric circles 1 to 3, the edge of the leaves are round teeth, fertile leaves due to the edge of the anti-roll into a false capsule group and the dentate tooth is not obvious, the following sparse leaves Brown, multicellular villous. Veins radiate from base to periphery, more than 2 branches, visible on both surfaces. Leaf blade green, naturally withered brown, papery or hard papery, Near the rectangle, the upper edge of the straight, along the leaf edge distribution, close to each other or interval, brown, membranous, persistent.