Phylum: Heterokontophyta

Taxon: Achnanthidium

Site: Lake Chelan shoreline, Chelan County, WA

Comments: Very common in Lake Chelan and in many freshwater lakes and ponds, but easily missed due to small size; often forms dense groups attached to submerged surfaces by a short stalk.

Phylum: Heterokontophyta

Taxon: Cocconeis

Site: Twenty-five Mile Creek at confluence with Lake Chelan, Chelan County, WA

Comments: Very common in Lake Chelan and in many freshwater lakes and ponds; often forms dense groups attached to submerged surfaces.

Phylum: Heterokontophyta

Taxon: Cocconeis

Site: Crystal View Bay, Lake Chelan, Chelan County, WA

Comments: Very common in Lake Chelan and in many freshwater lakes and ponds; often forms dense groups attached to submerged surfaces. Sample preserved in formalin.

Phylum: Heterokontophyta

Taxon: Cocconeis

Site: Purtteman Creek at confluence with Lake Chelan, Chelan County, WA

Comments: Very common in Lake Chelan and in many freshwater lakes and ponds; often forms dense groups attached to submerged surfaces.

Phylum: Heterokontophyta

Taxon: Eucocconeis flexella

Site: Congdon Bay, Lake Chelan, Chelan County, WA

Comments: Very common in Lake Chelan. Sample preserved in formalin.

Phylum: Heterokontophyta

Taxon: Eucocconeis flexella

Site: Sunset Marina, Lake Chelan, Chelan County, WA

Comments: Very common in Lake Chelan. Sample preserved in formalin.