Hannaea pamirensis 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.7818976 |
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persistent identifier |
https://treatment.plazi.org/id/03DF8792-EB63-4463-6943-489EFCACF91B |
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treatment provided by |
Felipe |
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scientific name |
Hannaea pamirensis Glushchenko, Kulikovskiy, Q.Liu & Kociolek |
| status |
sp. nov. |
Hannaea pamirensis Glushchenko, Kulikovskiy, Q.Liu & Kociolek , sp. nov.
( Figs 4-6 View FIG View FIG View FIG )
HOLOTYPE. — Slide no 02547; illustrated in Fig. 4B View FIG in collection of Maxim Kulikovskiy at the Herbarium of the Institute of Plant Physiology Russian Academy of Science, Moscow, Russia.
TYPE LOCALITY. — Tajikistan, Pamir Mountains, Mountain pass Maisara (Kok-Bay), unnamed river, periphyton (37°28.269’N, 72°38.958’E).
ETYMOLOGY. — The specific epithet “ pamirensis ” refers to the name of the Mountain range where this species was observed.
DISTRIBUTION. — As yet known only from the type locality.
DESCRIPTION
Valves
Asymmetrical about the apical axis, weakly arcuate to almost linear with capitate to rostrate apices, length 42-45 µm, breadth 5.5-7.0 µm.
Axial area
Narrow, slightly expanded to the central part of valve.
Central area
Unilaterally tumid on the concave margin, large, with ghost striae. Striae parallel, 16.5-18.0 in 10 µm.
SEM, external views ( Fig. 5 View FIG )
Striae uniseriate, comprised of small, rounded areolae ( Fig. 5 View FIG B-D). Marginal spines flattened ( Fig. 5 View FIG ). Areolae number 75-80 /10 µm within a stria.
SEM, internal views ( Fig. 6 View FIG )
Striae are located alternatively on each side ( Fig. 6 View FIG ). On central area there are false striae ( Fig. 6B View FIG ). Areolae slit-shaped ( Fig. 6 View FIG B-F). Ocellimbi are present on both valve ends ( Figs 6 View FIG C-F). A single rimoportula on one end of valve ( Fig. 6A View FIG ) and comprised of two thickened strips of silica on either side of a slit-like opening ( Fig. 6 View FIG C-E). Rimportulae are located near the ocellimbi, oriented either perpendicularlyto the striae, Fig. 6E View FIG ) or laterally (oriented parallel to the striae; Fig. 6C, D 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.