Hannaea mongolica Glushchenko, Kulikovskiy, Q. Liu & Kociolek, 2019
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publication ID |
https://doi.org/ 10.5252/cryptogamie-algologie2019v40a5 |
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DOI |
https://doi.org/10.5281/zenodo.7818980 |
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persistent identifier |
https://treatment.plazi.org/id/03DF8792-EB60-446D-6AE9-4C79FDA1F95A |
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treatment provided by |
Felipe |
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scientific name |
Hannaea mongolica Glushchenko, Kulikovskiy, Q. Liu & Kociolek |
| status |
sp. nov. |
Hannaea mongolica Glushchenko, Kulikovskiy, Q. Liu & Kociolek , sp. nov.
( Figs 7-10 View FIG View FIG View FIG View FIG )
HOLOTYPE. — Slide no 00060; illustrated in Fig. 8A View FIG , in collection of Maxim Kulikovskiy at the Herbarium of the Institute of Plant Physiology Russian Academy of Science, Moscow, Russia, leg. M.S. Kulikovskiy and E.S. Gusev.
TYPE LOCALITY. — Mongolia, Terkhiin Tsagaan Lake, Khangai Mountains, periphyton, 13.VIII.2011 (46°42.371’N, 096°39.862’E).
ETYMOLOGY. — The specific epithet “ mongolica ” refers to the name of the country where this species was observed.
DISTRIBUTION. — Type locality and slides no 02496, 02694, 003097, 03098. Mongolia: Tuul River, Herlen River (as Hannaea ? in Metzeltin et al. 2009: pl. 9, figs 1-8).
DESCRIPTION
Valves
Arcuate, smoothly tapering to the ends with capitate to rostrate apices, length 39.0-93.5 µm, breadth 6.5-8.0 µm.
Axial area
Narrow, linear. Central area is expanded unilaterally on the concave margin, large, with ghost striae present. Striae parallel, 17-18 in 10 µm.
SEM, external views ( Fig. 9 View FIG )
Valve face is flat ( Fig. 9 View FIG A-C). Striae biseriate going from valve face to the mantle. No silica ridge is evident between valve face and mantle. Axial area is very narrow. Central area is unilaterally expanded, large, swollen on the ventral side of the valve with evident ghost striae ( Fig. 9B, C View FIG ). Small circle or slit-like openings of rimoportulae are present on each valve end. Ocellimbi are present on mantle in each valve ends ( Fig. 9D, E View FIG ). Spines were not detected ( Fig. 9 View FIG A-C).
SEM, internal views ( Fig. 10 View FIG )
Striae biseriate, lying in depressions. Striae extend onto the mantle. Axial area is narrow. Central area is unilaterally- expended, large, located on the concave side of the valve with evident ghost striae ( Fig. 10 View FIG A-C). One rimoportula is present at each valve apex. Ocellimbi are present at each valve end, positoned on mantle ( Fig. 10D, E View FIG ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.