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LIU, B., WILLIAMS, D.M. and TAN, L. 2017. Three new<em> </em>species of <em>Ulnaria </em>(Bacillariophyta) from the Wuling Mountains Area, China.
Phytotaxa
. 306, 4 (May 2017), 241–258. DOI:https://doi.org/10.11646/phytotaxa.306.4.1.