Hormogoneae

Scytonema myochrous, copyright SAG.

Belongs within: Cyanobacteriia.
Contains: Rivulariaceae, Nostocaceae, Stigonematales.

The Hormogoneae are a clade of filamentous blue-green algae including species in which one or more cells of trichomes differentiate into heterocysts.

Hormogoneae [Microchaetaceae, Microchaetoideae, Nostocales]
    |  i. s.: Petalonema alatumHB14, G64
    |         Hydrocoryne [incl. Hormothamnion]HB14
    |         StreptostemonHB14
    |         BorzinemaHB14
    |         SeguenzaeaHB14
    |         DactylothamnosHB14
    |         Archaeoellipsoides conjunctivus Zhang 1985TK06, EB93
    |--+--RivulariaceaeHB14
    |  `--+--Chamaesiphon Braun & Grunow 1865SV13, C01 [Chamaesiphonales]
    |     |    `--C. subglobosusSV13
    |     `--+--‘Leptolyngbya’ boryanaL02
    |        `--‘Leptolyngbya’ foveolarumL02
    `--+--+--+--NostocaceaeHB14
       |  |  `--+--‘Calothrix’ parietinaHB14
       |  |     `--StigonematalesHB14
       |  `--FischerellaceaeHB14
       |       |--Westiellopsis prolificaHB14, SA07
       |       `--Fischerella Gomont 1895C01
       |            |--F. muscicolaHB14
       |            |--F. tenuisSA07
       |            `--F. thermalisC01
       `--Scytonemataceae [Symphyonemataceae]HB14
            |  i. s.: Rhyniella vermiformis Croft & George 1959E93
            |         EpivalviaE93
            |         EncrustaE93
            |         BrachytrichiaHS14
            |           |--B. balaniPP64
            |           `--B. quoyi (Agardh) Bornet & Flahault 1886HS14
            |--Mastigocladopsis repensHB14
            `--+--+--*Iphinoe spelaeobiosHB14
               |  `--BrasilonemaHB14
               |       |--*B. bromeliaeHB14
               |       `--B. roberti-lamyiHB14
               `--Scytonema Agardh 1824HB14, C01
                    |--*S. hofmanni Agardh ex Bornet & Flahault 1888C01
                    |--S. coactileSA07
                    |--S. hibernicumG64
                    |--S. julianumC01
                    |--S. myochrousG64
                    |--S. polycystumC01
                    |--S. rivulareSG05
                    `--S. stuposumC01

*Type species of generic name indicated

References

[C01] Castenholz, R. W. 2001. Phylum BX. Cyanobacteria: oxygenic photosynthetic bacteria. In: Boone, D. R., R. W. Castenholz & G. M. Garrity (eds) Bergey’s Manual of Systematic Bacteriology 2nd ed. vol. 1. The Archaea and the Deeply Branching and Phototrophic Bacteria pp. 473–599. Springer.

[E93] Edwards, D. 1993. Monera (bacteria, blue-green algae). In: Benton, M. J. (ed.) The Fossil Record 2 pp. 3–7. Chapman & Hall: London.

[EB93] Edwards, D., J. G. Baldauf, P. R. Brown, K. J. Dorning, M. Feist, L. T. Gallagher, N. Grambast-Fessard, M. B. Hart, A. J. Powell & R. Riding. 1993. ‘Algae’. In: Benton, M. J. (ed.) The Fossil Record 2 pp. 15–40. Chapman & Hall: London.

[G64] Gray, J. E. 1864. Handbook of British Water-weeds or Algae. R. Hardwicke: London.

[HB14] Hauer, T., M. Bohunická, J. R. Johansen, J. Mareš & E. Berrendero-Gomez. 2014. Reassessment of the cyanobacterial family Microchaetaceae and establishment of new families Tolypothrichaceae and Godleyaceae. Journal of Phycology 50: 1089–1100.

[HS14] Huisman, J. M., & A. Sampey. 2014. Kimberley marine biota. Historical data: marine plants. Records of the Western Australian Museum Supplement 84: 45–67.

[L02] Litvaitis, M. K. 2002. A molecular test of cyanobacterial phylogeny: inferences from constraint analyses. Hydrobiologia 468: 135–145.

[PP64] Peres, J. M., & J. Picard. 1964. Nouveau manuel de bionomie benthique de la mer Mediterranee. Recueil des Travaux de la Station Marine d’Endoume, Bulletin 31 (27): 5–137.

[SA07] Samad, L. K., & S. P. Adhikary. 2007. Cyanobacteria from two prehistoric caves of India. Bulletin of the Botanical Survey of India 49: 191–194.

[SG05] Sau, A., & R. K. Gupta. 2005. Algal flora of Indian Botanic Garden, Howrah, West Bengal. Bulletin of the Botanical Survey of India 47: 63–86.

[SV13] Schirrmeister, B. E., J. M. de Vos, A. Antonelli & H. C. Bagheri. 2013. Evolution of multicellularity coincided with increased diversification of cyanobacteria and the Great Oxidation Event. Proceedings of the National Academy of Sciences of the USA 110 (5): 1791–1796.

[TK06] Tomitani, A., A. H. Knoll, C. M. Cavanaugh & T. Ohno. 2006. The evolutionary diversification of cyanobacteria: molecular-phylogenetic and paleontological perspectives. Proceedings of the National Academy of Sciences of the USA 103: 5442–5447.

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