1. species: Nitella gracilis (Sm.) C.Agardh  – Slender Stonewort

    Taxon group: stonewort

    Nitella gracilis (Sm.) C.Agardh
    Nitella gracilis
    Nitella

  2. species: Nitella syncarpa (J.L.Thuillier) Kützing

    Nitella syncarpa
    Nitella
    Nitella syncarpa (J.L.Thuillier) Kützing

  3. species: Nitella opaca (C.Agardh ex Bruzelius) C.Agardh  – Dark Stonewort

    Taxon group: stonewort

    Nitella opaca (C.Agardh ex Bruzelius) C.Agardh
    Nitella
    Nitella opaca

  4. species: Nitella mucronata (A.Braun) Miq.  – Pointed Stonewort

    Taxon group: stonewort

    Nitella mucronata
    Nitella
    Nitella mucronata (A.Braun) Miq.

  5. species: Nitella flexilis (L.) C.Agardh  – Smooth Stonewort

    Nitella flexilis
    Nitella
    Nitella flexilis (L.) C.Agardh

  6. species: Nitella confervacea (Bréb.) A.Braun ex Leonh.  – Least Stonewort

    Taxon group: stonewort

    Nitella confervacea
    Nitella
    Nitella confervacea (Bréb.) A.Braun ex Leonh.

  7. species: Nitella tenuissima (Desv.) Kütz.  – Dwarf Stonewort

    Taxon group: stonewort

    Nitella tenuissima
    Nitella tenuissima (Desv.) Kütz.
    Nitella

  8. species: Nitella translucens (Pers.) C.Agardh  – Translucent Stonewort

    Taxon group: stonewort

    Nitella translucens
    Nitella translucens (Pers.) C.Agardh
    Nitella

  9. species: Heterosphaeria nitella anon.

    Taxon group: fungus

    Heterosphaeria nitella anon.
    Heterosphaeria nitella

  10. species: Nicella granifera (Kölliker, 1865)

    Taxon group: coelenterate (=cnidarian)

    Nicella granifera
    Nicella granifera (Kölliker, 1865)