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  1. Ochrolechia frigida f. frigida (Sw.) Lynge

    Form, Lichen, Terrestrial

  2. Andricus legitimus f. agamic Wiebes-Rijks, 1980 – Stunted Acorn Causer

    Form, Insect - hymenopteran, Terrestrial

  3. Stigmella splendidissimella form dulcella Heinemann, 1862 – False Bramble Pigmy

    Form, Insect - moth, Terrestrial

  4. Leucoptera laburnella form wailesella Stainton, 1858 – Blued Bent-wing

    Form, Insect - moth, Terrestrial

  5. Closterium jenneri forma cynthia (De Not.) Brook et D.B. Will., 2003

    Form, Alga, Terrestrial

  6. Candelariella medians f. steepholmensis O.L. Gilbert

    Form, Lichen, Terrestrial

  7. Cynips disticha f. sexual Hartig, 1840

    Form, Insect - hymenopteran, Terrestrial

  8. Eupithecia absinthiata form goossensiata Mabille, 1869

    Form, Insect - moth, Terrestrial

  9. Andricus seminationis f. agamic (Giraud, 1859) – Spindle Gall Causer

    Form, Insect - hymenopteran, Terrestrial

  10. Stauroneis anceps form gracilis Ehrenberg, 1843

    Form, Diatom

  11. Andricus quercusradicis f. agamic (Fabricius, 1798) – Truffle Gall Causer

    Form, Insect - hymenopteran, Terrestrial

  12. Acarospora umbilicata f. congredians H. Magn.

    Form, Lichen, Terrestrial

  13. Rhizosolenia hebetata form semispina (Hensen) Gran, 1905

    Form, Diatom

  14. Cosmarium arnellii forma compressa West, 1892

    Form, Alga, Terrestrial

  15. Didymella culmigena f. endorhodia Grove

    Form, Fungus, Terrestrial

  16. Roya cambrica forma limnetica West et G.S.West, 1912

    Form, Alga, Terrestrial

  17. Brachysira zellensis form difficilis (Grunow in Van Heurck) P.B. Hamilton, 1992

    Form, Diatom

  18. Fusarium oxysporum f. lini (Bolley) W.C. Snyder & H.N. Hansen

    Form, Fungus, Terrestrial

  19. Plagiotrochus australis f. agamic (Mayr, 1882)

    Form, Insect - hymenopteran, Terrestrial

  20. Cavinula cocconeiformis form parva

    Form, Diatom