Newly Recorded Species in Bacillariophyta from the Great Xing'an Mountains in China

Five genera and nine taxa of centric and araphid diatoms were investigated from the Great Xing'an Mts. Three taxa belonging to two genera were newly recorded in China: Orthoseira roeseana (Rabenhorst) O'Meara, Fragilaria goulardii (Brébisson) Lange-Bertalot, and Fragilaria nitzschioides Grunow. Chinese descriptions of Orthoseira Thwaites, Pseudos-taurosira Williams & Round, Staurosirella Williams & Round and Staurosira (Ehrenberg) Williams & Round are provided in this paper, with few previous record from China. Detailed descriptions of the taxonomical and ecological features of the nine taxa are also provided here.