Algal factsheet: Achnanthidium (Achnanthidiaceae)
Diagnostic features
Valves differ from each other (only one has a raphe; i.e. the genus is monoraphid). Raphid valve is strongly arched in girdle view. Very small, narrow cells. Araphid valve still has a space between the lines of striae (unlike Achnanthes), but this does not contain a raphe. Cells may be attached to surfaces by a mucilaginous stalk.Typical habitats
Our records come from swamps and slow-flowing riversNotes
Too small to identify easilyClassification
| Kingdom | Chromista |
|---|---|
| Phylum | Ochrophyta |
| Subphylum | Khakista |
| Class | Bacillariophyceae |
| Order | Achnanthales |
| Family | Achnanthidiaceae |
| Common name | Diatoms |