Rhodoglossum J.Agardh, 1876
Lectotype species: Rhodoglossum lanceolatum (Harvey) J.Agardh
Currently accepted name for the type species: Rhodoglossum gigartinoides (Sonder) Edyvane & Womersley
Original publication: Agardh, J.G. (1876). Species genera et ordines algarum, seu descriptiones succinctae specierum, generum et ordinum, quibus algarum regnum constituitur. Volumen tertium: De Florideis curae posteriores. Epicrisis systematis Floridearum. pp. [ii*-iii*], [i]-[viï], [1]-724. Lipsiae [Leipzig]: apud T.O. Weigel.
Request PDFType designated in: Kylin, H. (1956). Die Gattungen der Rhodophyceen. pp. i-xv, 1-673, 458 figs. Lund: C.W.K. Gleerups.
Description: Exceptional plants of a Californian species are recorded up to 3 m in length (Abbott and Hollenberg 1976: 539), although most are 20-60 cm. Thalli are erect, usually in clusters, from a crustose base and are linear-foliose, with or without marginal lobes and branches, to narrowly subdichotomous. Cystocarps are embedded and incorporate a filamentous surrounding hull. Tetrasporangia form in intercalary chains from cells of anticlinal filaments in the cortex. Gametophytes of a common California species produce kappa carrageenans which are shown by Chapman (1984) to achieve highest gel strength in specimens deteriorating after more than 50 days on the beach in drift.
Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 2016-03-16 by M.D. Guiry.
Taxonomic status: This name is of an entity that is currently accepted taxonomically.
Most recent taxonomic treatment adopted: Schneider, C.W. & Wynne, M.J. (2007). A synoptic review of the classification of red algal genera a half a century after Kylin's "Die Gattungen der Rhodophyceen". Botanica Marina 50: 197-249.
Comments: The type species is restricted to southeastern Australia, with other species coming from New Zealand (Chapman 1979), Antarctica (Arnaud and Delepine 1964), Japan (Mikami 1965) and weestern North America (Abbott and Hollenberg 1976). There is some doubt whether the type species of this genus is generically distinct from the suite of other species that have been associated with it, particularly the Northern Hemisphere representatives (Leister, Guiry, pers. comm). As presently defined, the genus differs from Gigartina by its non papilliform cystocarps, from Chondrus by the presence of a filamentous hull around the carposporophyte, and from Iridaea by the intercalary, cortical position of its catenate tetrasporangia.
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Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,
organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA)
and intended to be published in CD format.
These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above.
The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.
Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.
Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=35004
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 16 March 2016. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 November 2024
