A. cinnamomea grows only on Cinnamomum kanehirae, but C. kanehirae has the best timber quality of all Taiwan's broad-leaved trees, and to this day is still falling prey to illegal logging. The disappearance of its host has decimated the population of the fungus, while the fungus itself is also subject to excessive collection by the public. Both tree and fungus have become rare species.
樟芝只寄生牛樟樹上，牛樟是台灣材質最好的闊葉樹，至今盜伐仍層出不窮，樟芝隨著宿主牛樟遽減，加上民間過度採集，已雙雙成為稀有物種。