Tetraselmis
Similar genera
- Scherffelia (no pyrenoid)
- Pyramimonas, Halosphaera (theca replaced by
multiple layers of body scales, flagellate cells four-lobed in cross
section)
- Hafniomonas (naked
cells, round in cross section)
- Carteria (flagella inserted
into apical papilla rather than apical
depression, cells walled, rounded in cross section).
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