N.Vietnam, Ha Tinh Prov., Huong Son Distr., Son Hong Municipality, around point 18º34'06''N, 105º11'40''E. Heavily logged primary broad-leaved evergreen dry forest on steep mt slopes composed with shale at elev about 250-350 m a.s.l. along Song Con river valley. Terrestrial fern. Not common.
Record creation: 2026-03-01, Аверьянов Леонид ВладимировичCitation: Specimen LE 01203791 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01203791