Lemmaphyllum microphyllum is a widespread species, occurring throughout China, Korea, India, Japan, the Philippines, and Asiatic Islands. It is a wonderful epiphytic fern, whose fronds only reach about .5 inch. Fertile fronds will reach about 2″ but are very narrow. It especially loves to grow on tree-fern, but cork also works well. It will grow in a pot so long as the substrate is well-drained. Like many small fern species, it is slow-growing (but not difficult).