tepal sepal瓣状萼
tepal trace花被片脉迹
inner tepal内轮花被片
tepal venation花被片形态
tepal epidermis花被片表皮
morphological character of tepal epidermis花被片表皮形态
N(名词) any of the subdivisions of a perianth that is not clearly differentiated into calyx and corolla 瓣状被片