Bilateral flowers evolved , e.g. those of the pea family (Fabaceae) and orchids (Orchidaceae).
Bilateral flowers evolved , e.g. those of the pea family (Fabaceae) and orchids (Orchidaceae).
左右对称花类植物发生多样化进化，如豆科植物（豆科）和兰科植物（兰科）。
Bilateral flowers evolved , e.g. those of the pea family (Fabaceae) and orchids (Orchidaceae).
左右对称花类植物发生多样化进化，如豆科植物（豆科）和兰科植物（兰科）。