Asplenium sp. - Image showing sori. Asplenium sp. - Microscopic image showing section of sorus with sporangia. Asplenium - Species list from Manual de Flora de Costa Rica with hyperlinks to specimen data. Asplenium australasicum - Bird's Nest Fern, photo and text from Chambers Wildlife Rainforest Lodge, Far North Queensland, Australia. Asplenium - Synonymized list of the world's species. Asplenium scolopendrium - Two photographs of Hartstongue Fern and a description of the plant. Asplenium marinum - Several photographs of Sea Spleenwort and a description. Asplenium trichomanes - Two photographs of Maidenhair Spleenwort and some identifying features of the plant. Asplenium viride - Two photographs of Green Spleenwort and a description. Asplenium adiantum-nigrum - Photograph of Black Spleenwort and the identifying features of the plant. Asplenium ruta-muraria - Two photographs of Wall-rue and the identifying features of the plant. Asplenium dentatum - Description and photograph of this fern growing in Cuba. Asplenium nidus - Collection record, Ecology and Evolutionary Biology Conservatory and Gardens, University of Connecticut. Asplenium polyodon - Photograph and information on this fern. Asplenium rhizophyllum: Walking Fern - Plants profile with photographs, distribution, classification and status. Asplenium bulbiferum - Description and images of Mother Spleenwort from Canberra, Australia.