Ctenitis squamigera, commonly known as the Pacific lacefern or pauoa, is a critically endangered fern endemic to the Hawaiian Islands, specifically thriving in moist, shaded forest environments. It is a perennial herb that prefers the understory of montane rainforests, often found at elevations between 400 and 1,300 meters. The Pacific lacefern is characterized by its delicate, lace-like fronds that can add a unique texture to shaded garden areas. It typically grows to a modest size, with fronds reaching up to 1 meter in length.

In cultivation, Pacific lacefern requires conditions that mimic its natural habitat, including high humidity, consistent moisture, and protection from direct sunlight. It is not commonly found in cultivation due to its endangered status and specific growing requirements. Gardeners who are able to provide the right conditions can use it as an understory plant in a shaded, moist garden or in a conservatory setting. The fern’s rarity and unique appearance make it a valuable species for conservation efforts. Its cultivation is primarily for conservation and educational purposes, as it is not suitable for widespread use due to its endangered status.CC BY-SA 4.0