Eunotia sp. 2 (cf. Eunotia mongolica Kulikovskiy et al. 2010b: p. 124, pl. 40/figs 1-5)

Bukhtiyarova, Lyudmila N., 2019, The genus Eunotia Ehrenb. (Bacillariophyta) in the Cheremsky Nature Reserve, Ukrainian Polissya, and refined terminology relevant to the raphe system morphology, PhytoKeys 128, pp. 1-31 : 17

Eunotia sp. 2 (cf. Eunotia mongolica Kulikovskiy et al. 2010b: p. 124, pl. 40/figs 1-5) Figs 17 , 17a (SEM)

Illustrations.

Kulikovskiy et al. 2016: p. 124, pl. 28/figs 26-30.

Morphometric data.

Length 73 µm, width 3.5 µm, striae density c16, p20 in 10 µm. Kulikovskiy et al. 2016: length 35-55, width 2.3-2.7, striae density c19, p23.

Distribution in Ukraine.

The Cheremsky Nature Reserve, tract Obkopane, Lake Redychi, epiphyton on Sphagnum sp.

Comments.

This specimen is similar to E. mongolica in valve outline, however it differs in metric parameters and fine morphology, having shorter tr-fissures (Fig. 17a ).

Figures

Figures 13 - 27. New and rare in Ukraine species of Eunotia Ehrenb. from Ukrainian Polissya and the Lectotypes of two Eunotia species. 13, 13 a Eunotia pseudoflexuosa Hust., arrow indicates rimoportula at the middle of pole where raphe slit distal end finishes on the outer valve surface, double arrow - position of terminal fissure distal end on the outer valve surface, between the arrows - hyaline field from inside valve surface where the terminal fissure is located on the outer valve surface 14 Eunotia ruzickae Bily & Marvan 15, 16 Eunotia implicata Noerpel-Schempp et al. Lectotype: 15 = Eunotia impressa var. angusta Grunow in Van Heurck 1881: pl. 33 / fig. 22, designated here 17, 17 a Eunotia sp. 2 (Eunotia cf. mongolica Kulikovskiy et al.) 18 - 20 Eunotia sp. 3 (cf. Eunotia paludosa Grunow) 21 - 23 Eunotia incisa W. Smith ex Gregory. Lectotype: 23 = Eunotia incisa W. Smith ex Gregory 1854: pl. 4 / fig. 4, designated here 24 Eunotia sp. 4 (cf. Eunotia intermedia (Krasske ex Hustedt) Noerpel & Lange-Bert.) 25 - 27 Eunotia sp. 5 (cf. Eunotia meridiana Metzeltin & Lange-Bert.). Figs 13, 17, 18 SEM: 13, 13 a inside valve surface 17, 17 a, 18 outside valve surface; 19 - 28 LM. Scale bars: 10 µm (13 - 17, 19 - 27); 5 µm (18); 1 µm (13 a, 17 a).