a. [f. L. folii- combining form of foli-um leaf + col- (stem of colĕre to inhabit + -OUS.] Growing parasitically on leaves.
1874. M. Cooke, Fungi (1875), xiii. 278. The tropical representatives of foliicolous species are but few. Ibid., xiv. 287. Foliicolous species placed between the leaves of a pocket-book.