LI, Yanling, Zhijun GONG, Ping XIE, & Ji SHEN 2007 (Aug. 20) Floral survey of the diatom genera Cymbella and Gomphonema (Cymbellales, Bacillariophyta) from the Jolmolungma Mountain Region of China Cryptogamie: Algologie 28(3): 209-244, 214 figs., 1 table [EF]