filaments connate into staminal tube, completely adnate to ovary stipe to form androgynophore, upper part of staminal tube enlarged and urceolate, enclosing pistil;

• 花丝合生成为雄蕊管，完全地贴生于子房柄形成雌雄蕊柄，上半部分雄蕊管扩大和瓶形的,包围雌蕊；