155,250 species and infraspecific names are in the database, 21,864 images, 60,043 bibliographic items, 435,057 distributional records.

Taxonomy Detail

Tribe Polysiphonieae

Polysiphonieae Ardissone, 1883: 357.

Type of name: Polysiphonia Greville

Source: Díaz-Tapia, P., Maggs, C.A., West, J.A. & Verbruggen, H. (2017). Analysis of chloroplast genomes and a supermatrix inform reclassification of the Rhodomelaceae (Rhodophyta). Journal of Phycology 53(5): 920-937, 2 figs.

Original publication: Ardissone, F. (1883). Phycologia mediterranea. Parte prima, Floridee. Memorie della Società Crittogamologica Italiana 1: i-x, 1-516.

Description:
Thalli predominantly erect, decumbent or dorsiventral (erect and prostrate axes). Axes with 4 (7-11) pericentral cells, ecorticate. Rhizoids in open connection with pericentral cells, unicellular. Trichoblasts, when present, deciduous and unpigmented at maturity. Spermatangial branches cylindrical, formed on modified trichoblasts or on one or two branches of trichoblasts; procarps formed on modified trichoblasts, with two sterile groups; one tetrasporangium per segment on main axes or lateral branches with two or three cover cells. Cystocarps globose or ovoid.

Nomenclatural notes:

This name was also introduced by J.Agardh (1863: 792) as a tribus of the "Ordo Rhodomeleae"; although Agardh provided a description, the name is invalid as names of taxa with misplaced rank are invalid (Art. 37.6-8).

Polysiphonieae F.Schmitz 1889: 447 cited by Díaz-Tapia et al., 2017: 933, 934 with amended description.

Key References
Díaz-Tapia, P., McIvor, L., Freshwater, D.W., Verbruggen, H., Wynne, M.J. & Maggs, C.A. (2017). The genera Melanothamnus Bornet & Falkenberg and Vertebrata S.F. Gray constitute well-defined clades of the red algal tribe Polysiphonieae (Rhodomelaceae, Ceramiales). European Journal of Phycology 52(1): 1-20, 77 figs.

References
(Please note: only references with the binomials in the title are included. The information is from the Literature database.)

Diaz-Tapia, P., Bárbara, I., Cremades, J., Verbruggen, H. & Magss, C.A. (2017). Three new cryptogenic species in the tribes Polysiphonieae and Streblocladieae (Rhodomelaceae, Rhodophyta). Phycologia 56(6): 605-623, 55 fig., 2 tables.

Savoie, A.M. & Saunders, G.W. (2018 '2019'). A molecular assessment of species diversity and generic boundaries in the red algal tribes Polysiphonieae and Streblocladieae (Rhodomelaceae, Rhodophyta) in Canada. European Journal of Phycology 54(1): 1-25.

Schneider, C.W. & Walde, R.E. (1992). L-system computer simulations of branching divergence in some dorsiventral members of the tribe Polysiphonieae (Rhodomelaceae, Rhodophyta). Phycologia 31: 581-590, 4 figs, 3 tables.

Walde, R.E. & Schneider, C.W. (1992). L-system computer simulations of branching divergence in some dorsiventral members of the tribe Polysiphonieae (Rhodomelaceae, Rhodophyta). Phycologia 31: 581-590.

Linking to this page: http://www.algaebase.org/browse/taxonomy/detail/?taxonid=91659

Citing AlgaeBase
Cite this record as:
Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 21 May 2019.

Algaebase taxon LSID: urn:lsid:algaebase.org:taxname:91659

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