Abstract:
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.