Species contributed
Amphipleura pellucida | Encyonema hebridicum | Encyonema norvegicum | Frickea lewisiana | Frustulia amphipleuroides | Frustulia asiatica | Frustulia capitata | Frustulia crassinervia | Frustulia creuzburgensis | Frustulia inculta | Frustulia krammeri | Frustulia latita | Frustulia neomundana | Frustulia quadrisinuata | Frustulia rexii | Frustulia saxonica | Frustulia soror | Frustulia vulgaris | Simonsenia delognei