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Name derivation: |
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Named after Klebs, it is a replacement for the now-invalid name Hormidium (Chlorophyceae). The filaments have cylindrical cells, that can have thin or thick walls, and they normally have one pyrenoid per cell. The cross-walls are encompassed by H-shaped pieces that have a chloroplast encircling part of the cell. |
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Classification: |
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Klebsormidium P.C.Silva, K.Mattox & W.Blackwell 1972; 20 of 32 species descriptions are currently accepted taxonomically (Guiry and Guiry 2013). Order Klebsormidiales; Family Klebsormidiaceae Placed in the Charophyceae (advanced greens) because of its advanced cell division and biochemically because of the catalase activity of its peroxisomes (Guiry and Guiry 2013). Synonyms – Hormidium, Chlorhormidium, Pseudoulothrix, Klebsormidium |
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Morphology: |
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Uniseriate unbranched green trichomes with one parietal 'napkin ring' chloroplast per cell..
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Similar genera: |
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Entransia E.O. Hughes (1948) is closely related to Klebsormidium in the family Klebsormidiaceae (Rindi 2011) and here is treated as a synonym. It should be noted that Order Klebsormidiales has been retained in the Chlorophyceae by Rindi but moved to the advanced Charophyceae by others, e.g. Guiry and Guiry 2013.
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Habitat: |
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Temperate streams on dripping rocks or wet soil. Free floating or attached to a substrate with a gelatinous holdfast. Cells have one parietal chloroplast, less than half the cell volume. One pyrenoid surrounded by starch and embedded in chloroplast. |
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References: |
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Hughes, E.O. 1948. New fresh-water Chlorophyceae from Nova Scotia. American Journal of Botany 35:424-427. Guiry, M.D. and G.M. Guiry 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 22 May 2013. Rindi, F. 2011. Order Klebsormidiales. In: John, D.M., B.A. Whitton and A.J. Brook (Eds.), The Freshwater Algal Flora of the British Isles. Cmbridge University Press (878 pp). Silva, P.C., K.R. Mattox, and W.H., Jr Blackwell 1972. The generic name Hormidium as applied to green algae. Taxon 21: 639-645. Wehr, John D, Sheath, Robert. 2003. Freshwater Algae of North America: Ecology and Classification. Academic Press. |
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