Rhizopus Rhizopus Rhizopus is a genus of common saprophytic fungi on plants and specialized parasites on animals. They are found on a wide variety of organic substrates, including "mature fruits and vegetables", jellies, syrups, leather, bread, peanuts, and tobacco. They are multicellular. Some "Rhizopus" species are opportunistic agents of human zygomycosis (fungal infection) and can be fatal. "Rhizopus" infections may also be a complication of diabetic ketoacidosis. This widespread genus includes at least eight species. "Rhizopus" species grow as filamentous, branching hyphae that generally lack cross-walls (i.e., they are coenocytic). They reproduce by forming asexual and sexual spores. In asexual reproduction,
Tree fern tree fern), "Cystodium", "Leptopteris", "Lophosoria", "Sadleria", "Thyrsopteris" and "Todea" could also be considered tree ferns in a liberal interpretation of the term. Tree ferns are found growing in tropical and subtropical areas, including cool to temperate rainforests in Australia, New Zealand and neighbouring regions (e.g. Malaysia, Lord Howe Island, etc.). Like all ferns, tree ferns reproduce by means of spores formed on the undersides of the fronds. The fronds of tree ferns are usually very large and multiple-pinnate. Tree ferns do not form new woody tissue in their trunk as they grow. Rather, the trunk is supported by a fibrous