SABBE, Koen, Koenraad VANHOUTTE, Rex L. LOWE, Elizabeth A. BERGEY, Barry J.F. BIGGS, Steve FRANCOEUR, Dominic HODGSON, & Wim VYVERMAN 2001 (Nov. 9) Six new Actinella (Bacillariophyta) species from Papua New Guinea, Australia and New Zealand: further evidence for widespread diatom endemism in the Australasian region Eur. J. Phycol. 36(4): 321-340, 114 figs., 2 tables