Amphora sp. (ニセクチビルケイソウ, left) & Fragilaria sp. (オビケイソウ, right; Araphidineae), by Naoki Sugiyama
Gomphonema sp.(クサビケイソウ), x400, at Lake Sai (left) & Lake Yamanaka (right), by Naoki Sugiyama
50 μm
100 μm
150 μm; x 400
Navicula sp.(left; フナガタケイソウ), x400, at Lake Shoji, by Naoki Sugiyama
50 μm
100 μm
150 μm; x 400
Surirella sp. (コバンケイソウ), x200, at Lake Shoji, by Naoki Sugiyama
100 um
200 um
300 um; x 200