1. species: Synedra gracilis Kütz., 1844

    Taxon group: diatom

    Synedra gracilis
    Synedra gracilis Kütz., 1844

  2. species: Thalassiosira gracilis (Karsten) Hustedt, 1958

    Taxon group: diatom

    Thalassiosira gracilis
    Thalassiosira gracilis (Karsten) Hustedt, 1958

  3. species: Cylindrotheca gracilis (Brébisson ex Kützing) Grunow, 1882

    Taxon group: diatom

    Cylindrotheca gracilis
    Cylindrotheca gracilis (Brébisson ex Kützing) Grunow, 1882

  4. species: Epipyxis gracilis D.K. Hilliard et Asmund, 1963

    Taxon group: chromist

    Epipyxis gracilis
    Epipyxis gracilis D.K. Hilliard et Asmund, 1963

  5. species: Acrothrix gracilis Kylin, 1907

    Taxon group: chromist

    Acrothrix gracilis
    Acrothrix gracilis Kylin, 1907

  6. species: Levinsenia gracilis (Tauber, 1879)

    Taxon group: annelid

    Levinsenia gracilis
    Levinsenia gracilis (Tauber, 1879)

  7. species: Hilbigneris gracilis (Ehlers, 1868)

    Taxon group: annelid

    Hilbigneris gracilis
    Hilbigneris gracilis (Ehlers, 1868)

  8. species: Sphaerodorum gracilis (Rathke, 1843)

    Taxon group: annelid

    Sphaerodorum gracilis
    Sphaerodorum gracilis (Rathke, 1843)

  9. species: Gracea gracilis (E.J. Butler) M.W. Dick

    Taxon group: fungoid

    Gracea gracilis
    Gracea gracilis (E.J. Butler) M.W. Dick

  10. species: Euglena gracilis G.A.Klebs, 1883

    Taxon group: protozoan

    Euglena gracilis
    Euglena gracilis G.A.Klebs, 1883