Asplenium nidus is a species of fern in the family Aspleniaceae.The habit of this fern can be epiphytal or terrestrial, but it typically grows on organic matter. This fern often lives in trees like a bromeliad, where it collects water and humus in its leaf-rosette. It thrives in warm, humid areas in partial to full shade.Asplenium nidus are commonly sold as house plants, though most of the specimens in the horticultural trade are not A. nidus, but different, but closely related species. Apparently, most plants sold in America as A. nidus are actually Asplenium australasicum. A. australasicum has longer sori, and the midrib has a different shape.