Alterbidinium pentaradiatum subsp. pentaradiatum

subsp. pentaradiatum.  Autonym.  Holotype: Cookson and Eisenack, 1965c, pl.18, fig.1; Stover, 1974, pl.2, figs.6a-b.  Originally Deflandrea pentaradiata subsp. pentaradiata, subsequently Alterbia? pentaradiata subsp. pentaradiata (combination illegitimate), thirdly (and now) Alterbidinium? pentaradiatum subsp. pentaradiatum. Parent: Alterbidinium pentaradiatum