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Eunotia and relatives (Eunotiaceae)

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Diagnostic features

Valves curved, with a straight or curved short edge and a curved or wavy long edge depending on species. Some species form filaments. Very short raphes on each valve, running from the mantle onto the valve face at each end of the cell (may be difficult to see).

[Eunotia sepentina], north Taranaki, X400. Photo: Taranaki Regional Council & Manaaki Whenua Image
Eunotia sepentina, north Taranaki, X400. Photo: Taranaki Regional Council & Manaaki Whenua
Chain-forming [Eunotia], Lake Wakatipu, X320. Photo: Otago Regional Council & Manaaki Whenua Image
Chain-forming Eunotia, Lake Wakatipu, X320. Photo: Otago Regional Council & Manaaki Whenua

Typical habitats

All sorts of habitats (many species)

Classification

Kingdom Chromista
Phylum Ochrophyta
Class Bacillariophyceae
Order Eunotiales
Family Eunotiaceae
Common name Diatoms