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Home / Cyanobacteria / Filaments / Pseudo-branches
/ Petalonema |
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Name derivation: |
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Classification: |
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Petalonema M.M.Berkeley ex C.Correns,
1898; 9 of 12 species descriptions are
currently accepted taxonomically (Guiry and Guiry 2017).
Order Nostocales; Family Scytonemataceae
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Morphology: |
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Filaments with
false brahcnihg and solitary intercalary heterocysts (a.k.a.
heterocytes). Firm sheaths are very
thck and distinctly funnel-lie lamellated, colorless or yellow-brown. Apical cells always rounded. |
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Similar genera: |
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Habitat: |
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Tropical;
subaerophytic or freshwater epiliths. |
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References: |
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Correns,
C. 1889. Ueber
Dickenwachsthum durch Intussusception bei einigen Algenmembranen. Flora (Jena) 72: 298-347, pl. XV. Guiry, M.D. in Guiry, M.D. and Guiry, G.M. 2013.
AlgaeBase.
World-wide electronic publication, National
University of Ireland, Galway. http://www.algaebase.org; searched on 15
January 2013. |
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