Mertensia emarginata Brack.; Dicranopteris dichotoma (Thunb.) Bemh. var. emarginata (Brack.) Hillebr.; D. emarginata (Brack.) W. J. Rob.; D. emarginata var. inaequalis O. Deg. & I. Deg.; D. hawaiensis (as "kawaiensis") (Nakai) C. Chr.; Gleichenia dichotoma (Thunb.) Bemh. var. emarginata (Brack.) Hillebr.; G. dichotoma var. tomentosa Luerss.; G. emarginata (Brack.) T. Moore; G. hawaiensis sensu C. Chr., non Brack.; M. hawaiensis sensu Nakai, non Brack.

Indigenous

This is the more common form of Dicranopteris linearis and is found in abundant large mats on all the major islands.

Dicranopteris linearis f. linearis may be recognized by the fronds being mostly without hairs on stipes, rachises, costae, and pinnae.