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Name derivation:
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Classification:
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Xanthonema P.C. Silva
1979; 14 of 17 species descriptioins
are currently accepted taxonomically (Guiry and Guiry
2013).
Order Tribonematales; Family Xanthonemataceae
Xanthonema
replaces Heterothrix (Pascher
1932), which was established to replace Bumillaria exilis Klebs
(Guiry
and Guiry
2013).
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Morphology:
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Uniseriate unbranched
filaments as long as several cm, pale or bright green. Fragile, tending to break down into short
cell chains. Reproduces with zoospores and aplanospores.
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Similar genera:
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Tribonema has thinner areas of wall in mid-region of cell, and
clearly visible H-pieces (Johnson 2011). |
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Habitat:
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Terrestrial on wet soil, or in slightly acidic water. |
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References:
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Guiry, M.D. and G.M. Guiry 2012. AlgaeBase.
World-wide electronic publication, National University of
Ireland, Galway.
http://www.algaebase.org; searched on 21 December 2012. Johnson, L.R. 2011. Phylum Xanthophyta
(Tribophyta) (Yellow-Green Algae). In: John, D.M.,
B.A. Whitton and A.J. Brook (Eds).
The Freshwater Algal F,lora
of the British Isles, 2nd edition (878 pp). Silva, P.C. 1979.
Review of the taxonomic history and nomenclature of the yellow-green
algae. Archiv
für
Protistenkunde 121:
20-63. |
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