wall rue
wall-rue的词性:n.(名词)
1. A small, delicate fern (Asplenium ruta-muraria) that grows on rocks or in rocky crevices. 墙生铁角蕨:一种小且精致的(卵叶铁角蕨 铁角蕨属) 植物,长在岩石上头或岩石的缝隙内