It does not grow in the north. Not because it cannot survive there. Because it evolved in temperate regions and requires cool conditions. The male fern exists only in southern New Zealand, a product of introduced cultivation and naturalisation. The species inhabits damp shaded areas in native forests throughout the southern South Island. It prefers moist fertile soils with high humidity, thriving where rainfall is consistent and drainage is good. Fronds are large and arching, divided into many small leaflets that create a lacy appearance. Spores are produced on the underside of fertile fronds in small round clusters called sori. These spores are released into the air, drifting on wind currents until they land on suitable substrate. Diet consists of nutrients obtained through photosynthesis and absorption from soil via shallow root systems. The fern does not consume organic matter directly but rather extracts minerals and water from surrounding substrate. This autotrophic lifestyle allows it to thrive in nutrient-poor soils where other plants struggle. Classified as Introduced, male fern remains widespread in southern regions. Populations are stable in suitable forest habitat. However the species is sensitive to habitat disturbance. When forests are logged or modified, populations decline rapidly. Its presence signals intact mycorrhizal networks and healthy forest ecosystems. Conservation efforts focus on monitoring spread and preventing expansion into northern regions where native ferns still persist.