Hystrichosphaeridium clavigerum Deflandre, 1937; Emendation: Davey and Verdier, 1976, p.315, as Florentinia clavigera.

Now Florentinia. Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Hystrichokolpoma, fourthly (and now) Florentinia, fifthly Hystrichosphaera.

Holotype: Deflandre, 1937, pl.14 [al. pl.11], figs.1-2
Age: Senonian