Aulacodiscus sparsus Greville 1866: 123

Williams, David M., 2021, Notes on the diatom collection of the Natural History Museum, London (BM) II- IV. Some type specimens in the genus Aulacodiscus Ehrenberg and nomenclatural notes on Thumia Cleve ex F. B. Taylor, Phytotaxa 480 (2), pp. 152-162 : 154-155

Aulacodiscus sparsus Greville 1866: 123

TYPE:— Barbados, Greville ( BM 3479 , A. sparsa , holotype: Fig. 18 = the original drawing; Fig. 19 = the published figure; Fig. 20, the specimen, modified from Williams 1988: pl. 17, fig. 6)

FIGURES 10–13. Aulacodiscus kilkellyanus var. minor . BM 2818 (specimen at Maltwood Finder co-ordinates 12/17) FIGURES 18–20. Aulacodiscus sparsus , Barbados, Greville, BM 3479, holotype: Figure 18 = original drawing, Figure 19 = published figure, Figure 20, the specimen, modified from Williams 1988: pl. 17, fig. 6.