唔... 不知道我以下做的功課是否合格? 請指教~ (英語表達較快, 請見諒) Sarcochilus 與Pteroceras的分別在於唇瓣, both genus produce flowers with three-lobed labellum. The side lobes of Pteroceras' labellum develop into the shape of bird wings, which are less prominent in Sarcochilus. Instead, the mid lobe of Sarcochilus' labellum is usually thicker.