BUKHTIYAROVA, Ludmila, & F.E. ROUND 1996 ('May' rec'd 24 Oct) Revision of the genus Achnanthes sensu lato. Psammothidium, a new genus based on A. marginulatum Diatom Research 11(1): 1-30, 90 figs. [segregated from Achnanthidium; table of contents has different title: ... sensu lato section Marginulatae Bukht. sect. nov. of Achnanthidium Kütz.]