Hemiaulus membranaceus
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Taxonomic Group: Diatom
Trophic Status: Autotrophic
Size Range: 28-55 μm wide x 32-40 μm long (LUMCON Guide); 30-97 μm wide (Cupp 1943)
Key Characteristics: In girdle view cells range from almost square to five or six times wider than long; valves concave or nearly flat; horns short with a more or less sharp point; cell wall lightly silicified and areolation indistinct
Confused With:
Toxin: None known