Phylum: Heterokontophyta

Taxon: Aulacoseira

Site: Roses Lake, Chelan County, WA

Comments: Common in Lake Chelan; very common in spring diatom blooms in many freshwater lakes and ponds. Sample preserved in formalin.

Phylum: Heterokontophyta

Taxon: Cyclotella

Site: Crystal View Estates Marina, Lake Chelan, Chelan County, WA

Comments: Very common in Lake Chelan and in many freshwater lakes and ponds; often planktonic. Sample preserved in formalin.

Phylum: Heterokontophyta

Taxon: Cyclotella

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

Comments: Very common in Lake Chelan and in many freshwater lakes and ponds; often planktonic.

Phylum: Heterokontophyta

Taxon: Lindavia ocellata

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

Comments: Moderately common in Lake Chelan, but easily overlooked due to small size and unusual surface features (looks like a button). Sample preserved in formalin.

Phylum: Heterokontophyta

Taxon: Melosira

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

Comments: Moderately common in Lake Chelan; common in many freshwater lakes, ponds, streams, and rivers.

Phylum: Heterokontophyta

Taxon: Melosira

Site: Roses Lake, Chelan County, WA

Comments: Moderately common in Lake Chelan; common in many freshwater lakes, ponds, streams, and rivers.

Phylum: Heterokontophyta

Taxon: Stephanodiscus

Site: Moses Lake, Grant County, WA

Comments: Uncommon in Lake Chelan; often in eutrophic lakes and ponds; may form blooms.