Studies on type material from Kützing’s diatom collection VI: The identity of Diatoma liber Suhr (1831) Author Williams, David M. text Phytotaxa 2021 2021-12-17 528 3 215 223 journal article 2891 10.11646/phytotaxa.528.3.6 93a0ef9f-16d5-4e83-9dd1-124f985f2085 1179-3163 5788164 5. ‘ Diatoma maculosa Suhr’ The name ‘ Diatoma maculosa Suhr’ is also encountered in Kützing’s collection, another name never published but with material in the herbarium: BM 17984 (which is a broken slide) (‘Kützing 760’, “Süd Occidentalis, Binder”). The slide contains only fragments of what Suhr could have named a species of Diatoma but is undoubtedly a species of Biddulphia ( Fig. 21 ).