Let us consider the rare endemic terrestrial orchid Phaius takeoi. National Taiwan University technical specialist Jan Chen-han has spent years in the lab trying to grow over 1,000 individuals. But of over 400 orchid culture bottles he prepared, not one survived, perhaps because once the buds were returned to the wild, there were no suitable symbiotic fungi around for them.
以台灣稀有原生種「粗莖鶴頂蘭」為例，台灣大學技正鄭誠漢多年來在實驗室裡無菌播種繁殖了一千多棵，陸續「出瓶」四百多棵，竟無一存活，很可能是復育的小芽引回自然野地後，沒有合適的共生真菌一起生活。