The survey also discovered that of the six wild colonies of the plants that were found, only one, at the mouth of the Wenliao River in Ta-an Township, set seed. The remaining colonies only flowered.
調查中還發現，野外的６個族群中，除了大安鄉塭寮溪口的族群可以結實外，其他族群都只開花、不結實。