花柱同长 meaning in English

homostyle
homostyly

From study on their floral syndrome , it is possible to ascertain that p . meirilliana and its sister species p . cicutarrifolia have the same ancestor that is homostylyed , since the changing of environment conditions or visiting by insects , p . merrilliana becomes heterostylyed and seems to have envolved in a direction toward dioecy or subdioecy
根据花部综合特征，推测两物种是同一祖先的两个近缘衍生种，安徽羽叶报春的祖先可能是花柱同长的，并有可能向雌雄异株方向进化c5