https://blog.gongquiz.com/2021/08/27/raunkiaer%ec%9d%98-%ec%83%9d%ed%99%9c%ed%98%95%ea%b3%bc-%ea%b7%b8-%eb%8c%80%ed%91%9c%ec%a2%85%ec%9d%b4-%eb%b0%94%eb%a5%b4%ea%b2%8c-%ec%97%b0%ea%b2%b0%eb%90%9c-%ea%b2%83%ec%9d%80-%ec%a1%b0%ea%b2%bd/