Coronia daemeliana (Grunow) Ruck & Guiry 2016: 2

Williams, David M., 2023, Notes on the diatom collection of the Natural History Museum, London (BM) IX: Campylodiscus hardmanianus, with a discussion on synapomorphy and the poverty of molecular monophyly, Phytotaxa 629 (1), pp. 53-64 : 57-59

Coronia daemeliana (Grunow) Ruck & Guiry 2016: 2

BASIONYM:— Campylodiscus daemelianus Grunow in A.W.F. Schmidt 1874: fig. 4.

SYNONYMS:—‘ Campylodiscus daemelianus var. fossilis Pantocsek’ (in Möller?)

‘ Campylodiscus daemelianus var. sonderianus Grunow’ (in Möller?)

Campylodiscus sonderianus Grunow in Möller 1877: 13, invalid

TYPE:— AUSTRALIA, ‘Yarra, Yarra’, BM 26853 (Van Heurck, Types du Synopsis des Diatomées de Belgique, no. 542 ‘Yarra-Yarra ( Australie)’, mostly fragments ( Figures 25, 26 ); BM 12875 (Cleve & Möller, Diatoms slide no. 115, ‘South Yarra [ Australia]’, see Cleve & Möller 1878b: [1]; BM 53510, BM 54531 (‘fossil, S. Australia’, Tulk); BM 57560 ( Australia | Fossil’, Wynne Baxter 2931); AUSTRALIA, BM 8898 (Deby slide), isotypes.

INDIA, COCHIN, BM 9009 (Deby slide: ‘ Campylodiscus hardmanianus ’)

Campylodiscus daemelianus is equally hard to track down. Its first place of publication is usually given as Grunow in Schmidt (1874: fig. 4). While referring to Schmidt’s Atlas der Diatomaceen-kunde , it specifically refers to the ‘Probe-Hefte’ (the trial issue) published just after the first part of the Atlas proper, in July 1874 (the first [‘erstes’] Hefte of the Atlas , with plates 1-4, was published on January 1874, Hanna 1969: 1) comprising just one plate as an example of what one might purchase; it was designed to attract subscribers (see Hanna 1969: 1). This ‘Probe-Hefte’ plate has not been seen nor has any copy yet been traced – it must exist somewhere. Later, Campylodiscus daemelianus was figured again in Schmidt’s Atlas ( Schmidt 1877: pl. 54, figs 1, 2, ‘Yarra, Yarra’ [ Australia]).

There are several specimens in BM of Campylodiscus daemelianus var. comminuta A.W.F.Schmidt (in Schmidt et al. 1875: pl. 17, fig. 11, ‘Bengal’, BM Adams G832, ‘Bay Bengal, Indien’, F.W.Mills. one fragment). Interestingly, Campylodiscus daemelianus is reported as having two further varieties: ‘ Campylodiscus daemelianus var. fossilis Pantocsek’ (noted only in Mills 1933: 337 as ‘Moller’s slides’) and ‘ Campylodiscus daemelianus var. sonderianus ’, named, but not described, also apparently in Möller (1868) – neither name has been located in that particular catalogue. ‘ Campylodiscus daemelianus var. sonderianus ’ may simply be a proposed change of rank for C. sonderianus (see above). Deby included C. daemelianus in his study, and added two varieties as synonyms: C. daemelianus var. comminuta and C. daemelianus var. sonderianus , the latter he appends as ‘Grun. in litt. Möller slides’ ( Deby 1891: 22, his figure 53 is a reproduction of Schmidt 1877: pl. 54, fig. 2).

Figures

FIGURES 19–29. Figures 19, 20: Specimens of Campylodiscus hardmanianus var. grovei Deby from BM Adams GC829, ‘Derbend’, Caspian Sea, Russia, scaLe bar = 20μm. Figures 21, 22: Specimens of Campylodiscus hardmanianus var. grovei Deby from BM 53492, ‘Derbent’, Caspian Sea, Russia, scale bar = 50μm. Figure 23: Specimen (?) of ‘C. sonderianus’ from BM 35870, ‘TypeN-PLatte | I.D. MöLLer’, scaLe bar = 50μm. Figure 24: Reproduction of the published name (designation) for ‘Campylodiscus Sonderianus Grun. n. sp.’ in Möller (1877, p. 13). Figures 25, 6: Specimens of Campylodiscus daemelianus from BM 26853, ‘Yarra, Yarra’, Australia (Van Heurck, Types du Synopsis des Diatomées de Belgique, No. 542 (‘Yarra-Yarra (AUstraLie)’, scaLe bar = 50μm. Figure 27: Specimen of Coronia echeneis from Wismar, Germany, BM 12875, Cleve & Möller, no. 115, ‘Lebend im Hafen von Wismar’, scaLe bar = 20μm. Figures 28, 9: Specimen of ‘C. sonderianus’ from BM 64450, ‘ChaLLeNger StatioN 233’, ‘T.E.Doeg’, scaLe bar = 50μm.