Dawsoniella A.B.Joly & Yamaguishi-Tomita, 1967, nom. illeg.
Holotype species: Dawsoniella bostrychiae A.B.Joly & Yamaguishi-Tomita
Currently accepted name for the type species: Dawsoniocolax bostrychiae (A.B.Joly & Yamaguishi-Tomita) A.B.Joly & Yamaguishi-Tomita
Original publication and holotype designation: Joly, A.B. & Yamaguishi-Tomita, N. (1967). Dawsoniella bostrychiae a new parasite of mangrove algae. Sellowia 19: 63-70.
Request PDFPrecise date of publication: 31 October 1967
Description: Thalli very small, polysiphonous, comprised of extensive prostrate system without trichoblasts; all polysiphonous branches arise endogenously. Unicellular rhizoids, cut off from the pericentral cell, occur on ventral sides of the prostrate branches. Axial cells, at intervals of 11-13 segments, produce two indeterminate and one erect determinate branch, arising from primordia (or non-emergent trichoblasts). The indeterminate branches remain part of the prostrate system. The upright determinate branches short, up to 500 &m long, and bear the only exogenously derived branches, trichoblasts, formed one per segment, in a spiral series. Tetrasporangia produced, one per segment, in short spiral series in upright branches. Male capitula clavate, replace trichoblasts in distal part of erect branches, without a distal sterile tip. Cystocarps spheroidal, subterminal on erect branches.
Information kindly contributed by R.E. Norris but may now be outdated.
Taxonomic status: This name is currently regarded as a synonym of Dawsoniocolax.
Comments: Epiphytic on Pocockiella, in the Pacific Ocean, Raroia, Tuamoto Archipelago, and at Eniwetok Atoll, Marshall Islands.
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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,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=42863
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 22 October 2011. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 26 April 2024
