illustration of brassica nigra (black mustard) bearing racemes of small yellow flowers and green leaves on long stems - 黑芥 幅插畫檔、美工圖案、卡通及圖標
history botany, sinapis nigra now rhamphospermum nigrum, black mustard plant, vintage illustration 19th century - 黑芥 幅插畫檔、美工圖案、卡通及圖標
crowfoot family and flowering plants, hand-colored wood engraving, published 1887 - 黑芥 幅插畫檔、美工圖案、卡通及圖標圖畫 - 藝術品, 植物學, 甘藍型油菜