花柱红色到杏黄，狭窄，约6厘米，基部贴生于退化雄蕊柱。
Style red to apricot yellow, narrow, ca. 6 cm, base adnate to staminode column.
雄蕊合生的结构还可能进一步与柱头或花柱合生在一起，形成“合蕊柱”一类的复杂结构。
The structure formed by stamen fusion can be further fused with style and a gynostemium is always formed, such as in Aristolochiaceae and Stylidiaceae.
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