KRAMMER, K. 1991 (Nov.) Morphology and taxonomy in some taxa of the genus Aulacoseira Thwaites (Bacillariophyceae). II. Taxa in the A. granulata-, italica- and lirata-groups Nova Hedwigia 53(3/4): 477-496, incl. IX pls. [= 88 figs.] [incl. n.sp. from Scotland]