Published October 29, 2025 | Version v1
Taxonomic treatment Open

Ulnaria ulna Compere 2001

  • 1. К. А. Timiryazev Institute of Plant Physiology RAS, IPP RAS, 35 Botanicheskaya St., Moscow, 127276, Russia & Faculty of Biology, M. V. Lomonosov Moscow State University, Leninskie Gory 1, building 12, Moscow, 119234, Russia
  • 2. К. А. Timiryazev Institute of Plant Physiology RAS, IPP RAS, 35 Botanicheskaya St., Moscow, 127276, Russia
  • 3. К. А. Timiryazev Institute of Plant Physiology RAS, IPP RAS, 35 Botanicheskaya St., Moscow, 127276, Russia & К. А. Timiryazev Institute of Plant Physiology RAS, IPP RAS, 35 Botanicheskaya St., Moscow, 127276, Russia

Description

Ulnaria ulna (Nitzsch) Compère (2001: 100) (Fig. 1)

Morphology: Valves linear-lanceolate, 130–191 µm long, 8.3–8.9 µm wide. Apices gradually tapering, subcapitate. 6–8 reduced striae are present at each side of the valve, in the central portion. Striae density—9.5–10.5/10 µm.

Representative samples: O-5, O-8, O-9, O-10, O-11, O-12, O-15, O-16, O-103, O-L.

Ecology: found in samples with pH=5.16–8.60, t=6.3–13.7°С, Ec=10–420 µS/cm, TDS<0.20 ppt. Salinity and pH-indifferent, β-mesosaprobic.

Notes

Published as part of Mironov, Andrei, Glushchenko, Anton, Kezlya, Elena & Kulikovskiy, Maxim, 2025, Species composition of the diatom communities in the watercourses of Northeastern Kamchatka with comments on abundant taxa and description of Gomphonema lepskayae sp. nov., pp. 1-19 in Phytotaxa 726 (1) on page 10, DOI: 10.11646/phytotaxa.726.1.1, http://zenodo.org/record/18425751

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Additional details

Biodiversity

References

  • Compere, P. (2001) Ulnaria (Kutzing) Compere, a new genus name for Fragilaria subgen. Alterasynedra Lange-Bertalot with comments on the typification of Synedra Ehrenberg. In: Jahn, R., Kociolek, J. P., Witkowski, A. & Compere, P. (Eds.) Lange-Bertalot Festschrift. Studies on diatoms dedicated to Prof. Dr. Dr. h. c. Horst Lange-Bertalot on the occasion of his 65 th birthday. A. R. G. Gantner Verlag K. G., Ruggell, pp. 97-101.