Crepidomanes venosum, the veined bristle-fern or bristle filmy fern, is a fern in the family Hymenophyllaceae. It is only found in wet forests, mainly growing as an epiphyte on the shady side of the soft tree fern, Dicksonia antartica. It also grows on logs, trunks of trees and rarely on trunks of Cyathea species or on wet rock-faces. It is found in the wetter parts of Eastern Australia and New Zealand. C. venosum has poor long-distance dispersal compared to other ferns due to its short lived spore. Notable features of Crepidomanes venosum include it being one cell layer thick, 5–15 cm in length, having many branching veins and a trumpet shaped indusium.