Coppermine. 1–6 Encyonema norvegicum (6829, 6830, 6833) 7–14 Delicata canadensis (6829, 6830, 6833) 15, 16 Halamphora coraensis (6829, 6831) 17 Encyonema hebridicum (6829) 18 Encyonema ventricosum (6832) 19 Encyonema silesiacum (6831) 20 Encyonema paucistriatum (6833) 21 Amphora lange-bertalotii (6826) 22–26 Encyonema hintzii or Encyonema vulgare (6827, 6830, 6831, 6832, 6833). Scale bar: 10 µm.