SABBE, Koen, & Wim VYVERMAN 1995 (Nov.) Taxonomy, morphology and ecology of some widespread representatives of the diatom genus Opephora Eur. J. Phycol. 30(4): 235-249, 79 figs., 2 tables Pseudostaurosira perminuta n.c., Opephora mutabilis n.c., O. mutabilis n.c., O. guenter-grassii n.c. O. naveana, O. pacifica