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Issue: Vol. 755 No. 2: 8 May 2026
Type: Article
Published: 2026-05-08
DOI: 10.11646/phytotaxa.755.2.1
Page range: 121-153
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Notes on the diatom collection of the Natural History Museum, London (BM) X: Roper’s species of Biddulphia (Bacillariophyta)

The Natural History Museum; Cromwell Road; London; SW7 5BD; UK
The Natural History Museum; Cromwell Road; London; SW7 5BD; UK
Department of Molecular Biosciences; University of Texas; Austin; TX; 78712; USA
Freeman Clarke Samuel Roper original material Biddulphia Odontella

Abstract

Freeman Clarke Samuel Roper described three new taxa of Biddulphia: B. granulata, B. reticulata and the invalidly published B. reticulata var. β. His original drawings of these have been discovered as in most cases they identify the exact slide (and sometime the exact specimen) used for his study. These have been examined here and, in some cases, revised names of certain species studied by us earlier are proposed.

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How to Cite

Williams, D.M., Sims, P.A. & Ashworth, M.P. (2026) Notes on the diatom collection of the Natural History Museum, London (BM) X: Roper’s species of Biddulphia (Bacillariophyta). Phytotaxa 755 (2): 121–153. https://doi.org/10.11646/phytotaxa.755.2.1