The Kahili Fern (Hymenophyllum kaulbackianum) is a delicate, small fern native to the tropical forests of the Hawaiian Islands. It thrives in moist, shaded environments, often growing on tree trunks or rocks. This fern is characterized by its thin, translucent fronds that can reach up to 30 centimeters in length, giving it a unique appearance. Kahili Fern plays a vital role in its ecosystem by providing habitat and moisture retention in the forest. It is part of the diverse flora of Hawaii, which includes many endemic species, meaning they are found nowhere else in the world. Conservation efforts are important to protect this fern and its habitat from threats like habitat loss and invasive species.