Groenbladia

Groenbladia
Scientific classification Edit this classification
Kingdom: Plantae
Class: Zygnematophyceae
Order: Desmidiales
Family: Desmidiaceae
Genus: Groenbladia
Teiling
Type species
Groenbladia neglecta
(Raciborski) Teiling[1]
Species

Groenbladia is a genus of green algae, specifically of the Desmidiaceae.[2] It has a cosmopolitan distribution in acidic, oligotrophic freshwater habitats;[1] it may occasionally form blooms.[3]

The genus name of Groenbladia is in honour of Rolf Leo Grönblad (1895-1962), who was a Finnish dentist and botanist (Algology), who worked in Finland.[4]

The genus was circumscribed by Einar Johan Sigurd Teiling in Bot. Not. (1952) on page 275 in 1952.

Description

Groenbladia forms long or short filaments of cells, which are often surrounded by a gelatinous sheath. Cells are elongate, cylindrical (sometimes narrowing towards the ends), and are up to nine times longer than broad; there may be a slight constriction at the middle of the cell (isthmus). On each side of the isthmus, there is a transverse row of pores. Each cell has two chloroplasts, which are axial, band-shaped, with one to eight pyrenoids.[1]

Aplanospores have been reported in one species, G. neglecta; the aplanospores are yellowish and elliptical. Sexual reproduction occurs by conjugation. During conjugation, cells (i.e. gametangia) become geniculate and produce a broad tube in which the gametes fuse. Mature zygospores are quadrangular, surrounded by the conjugation tube and gametangial cell walls.[1]

Species are distinguished based on the shape of the cells.[3]

References

  1. ^ a b c d Guiry, M.D.; Guiry, G.M. "Groenbladia". AlgaeBase. University of Galway.
  2. ^ See the NCBI webpage on Groenbladia. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
  3. ^ a b Hall, John D.; McCourt, Richard M. (2014). "Chapter 9. Conjugating Green Algae Including Desmids". In Wehr, John D.; Sheath, Robert G.; Kociolek, J. Patrick (eds.). Freshwater Algae of North America: Ecology and Classification (2 ed.). Elsevier Inc. ISBN 978-0-12-385876-4.
  4. ^ Burkhardt, Lotte (2022). Eine Enzyklopädie zu eponymischen Pflanzennamen [Encyclopedia of eponymic plant names] (pdf) (in German). Berlin: Botanic Garden and Botanical Museum, Freie Universität Berlin. doi:10.3372/epolist2022. ISBN 978-3-946292-41-8. Retrieved January 27, 2022.


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