《宋书·志·卷二十九》
元嘉二十年六月壬寅，茎昼天渊池的芙蓉二花同一蒂。园丞陈袭祖卜报朝廷。
元嘉二十年六月壬寅，华林天渊池芙蓉二花一蒂，园丞陈袭祖以闻。
In the June of the twentieth year of Yuangjia, two hibiscuses from Hualin Tianyuanchi shared a single stalk. Garden superintendent Chen Xizu reported it to the imperial court.