Diploneis praesejuncta: holotype

Reference:

Droop, S.J.M. (1998). Diploneis sejuncta (Bacillariophyta) and some new species from an ancient lineage. Phycologia 37: 340–356.

p. 347:

Diploneis praesejuncta S.J.M. Droop, sp. nov.

Synonyms: Navicula sejuncta var. baldjikiana? Schmidt (1881, figs 55, 56); Diploneis sejuncta (Schmidt) Jørgensen var. baldjikiana (Schmidt) Heiden & Kolbe (1928, p. 610)? [nomenclatural synonym, probably a misidentification]; Caloneis zachariasii (Reichelt) Hustedt var. baldjikiana (Schmidt) Cleve-Euler (1955, p. 91, figs 1128a-c, non figs 1128d-f); non C. sejuncta (Schmidt) Cleve var. baldjikiana Cleve-Euler (1939, fig. 2a, b).

Holotype: Academy of Natural Sciences of Philadelphia (ANSP), cat. no. Van Heurck Type no. 545, Baldjick. England Finder reference O41/O41.3.

• differential contrast optics
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