Viet Nam, Lang Son, Húu Lung District, Húu Lien Municipality; Húu Lien Protected Area, at Lan Dat, inundated forest area, cultivated fields mixed with inundated forest areas, forest under water during rainy season and extending onto limestone hills; disturbed.
21.6822223 106.34
110 meters (361ft)
in understory; short rhizome somewhat orange; fronds deep green; marginal sporangia brown