qiào[1][註 1],又稱橡椀,是某些植物果實(主要為殼斗科植物)特有的一種外殼,如包在栗子外面的有刺硬殼,使果實成為堅果。殼斗是一種木質化結構,由苞片(花或花序外圍或下方的變態葉[3])聯結而形成,有杯狀、碗狀、盤狀或球狀等。殼斗外常有針刺或鱗片,可提制栲膠[1][2]

注釋

參考文獻

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