Colacodasya F., 1897
Holotype species: Colacodasya inconspicua (Reinsch) F.Schmitz
Original publication and holotype designation: Schmitz, F. & Falkenberg, P. (1897). Rhodomelaceae. In: Die natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten insbesondere den Nutzpflanzen unter Mitwirkung zahlreicher hervorragender Fachgelehrten, Teil 1, Abteilung 2. (Engler, A. & Prantl, K. Eds), pp. 421-480. Leipzig: verlag von Wilhelm Engelmann.
Taxonomic status: currently recognized as a distinct genus.
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.
Description: Thallus minute and parasitic on Heterosiphonia , lightly pigmented, sympodially developed and dorsiventrally or bilaterally organized, appearing tufted on branches of the host. Basal filaments endophytic, erect indeterminate axes alternately and distichously producing determinate pseudolateral branch systems at intervals of two polysiphonous segments. Pseudolaterals monosiphonous above and polysiphonous in basal segments or polysiphonous throughout, once to several times alternately to subdichotomously branched. Axial cells surrounded by 4-6 periaxials, these occasionally transversely divided. Main axes with or without light rhizoidal cortication. Dioecious, spermatangia formed in several successive whorled series on ultimate branches of pseudolaterals, overall forming simple or branched, oblong to linear-lanceolate stichidia with sterile tips. Procarps developed on upper portions of erect axes, others later forming below on the same pseudolateral system. In some, successive procarps are formed on the fertile segments but not all fully develop. After fertilization, fusion cells generate monopodial gonimoblast filaments which terminate in chains of carposporangia. Carposporophytes surrounded by large, corticated pericarps with subtending or median, short, often curved, pseudolaterals. Four to six tetrahedral sporangia produced in successive whorls on ultimate branchlets of pseudolaterals, forming simple or branched, linear-lanceolate to elongate-apiculate stichidia with polysiphonous axes below and short sterile tips. Tetrasporangia enclosed by cover cells at maturity.
Information contributed by: C.W. Schneider. The most recent alteration to this page was made on 6 Oct 2010 by M.D. Guiry.
Comments: A rarely collected hemiparasite of Heterosiphonia from Argentina, subantarctic and antarctic islands, and southern California.
Numbers of names and species: There are 5 species names in the database at present, of which 3 have been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..
Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):
Click here to also show infraspecific names in the list below.
Falkenberg, P. (1901). Die Rhodomelaceen des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. Fauna und Flora des Golfes von Neapel, Monographie 26. pp. i-xvi, 1-754, 10 figs, 24 pls. Berlin.
Hollenberg, G.J. (1970). Phycological notes. IV. Including new marine algae and new records for California. Phycologia 9: 61-72.
Kylin, H. & Skottsberg, C. (1919). Zur Kenntnis der subantarktischen und antarktischen Meeresalgen. II. Rhodophyceen. In: Wissenschaftliche Ergebnisse der Schwedischen Südpolar-Expedition 1901-1903. (Nordenskjöld, O. Eds) Vol. 4: 2, pp. 1-88. Stockholm: Litographisches Institut des Generalstabs.
Levring, T. (1945). Marine algae from some Antarctic and sub-Antarctic islands. Lunds Universitets Årsskrift, N.F., Avd. 2 41(7): 1-36, 1 pl.
McFadden, M.E. (1911). On a Colacodasya from southern California. University of California Publications in Botany 4: 143-150, 1 plate.
Mendoza, M.L. (1970). Dos especies de algas rojas hemiparasitas de Puerto Deseado, Provincia de Santa Cruz, Argentina. Physis 29: 363-371, 4 pls.
Reinsch, P.F. (1888). Species et genera nova algarum ex insula Georgia australi. Berichte der Deutschen Botanischen Gesellschaft 6: 144-156.
Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.
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.
Created: 28 December 2000 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=42483
Please cite this record as:
Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 16 January 2021.