Pinnatiphycus N'Yeurt, Payri & P.W.Gabrielson, 2006
Holotype species: Pinnatiphycus menouanus N'Yeurt, Payri & P.W.Gabrielson
Original publication and holotype designation: N'Yeurt, A.D.R., Payri, C.E., Gabrielson, P.W. & Fredericq, S. (2006). Pinnatiphycus menouana gen. et sp. nov. (Rhodophyta: Dicranemataceae) from New Caledonia and Fiji (South Pacific): vegetative and reproductive morphology and molecular phylogeny. Phycologia 45: 422-431.
Request PDFDescription: Thallus basally subcylindrical and stoloniferous, upper parts flattened, complanate, subdichotomously (lower) to dichotomously (upper) branched, attached to the substratum via a basal disc and several cylindrical haptera issued at right angles from the inferior surface. Mature axes with a filamentous medulla of elongate clusters of cells mostly with yellow refractive contents surrounded on either side by large rounded medullary cells becoming progressively smaller and grading into a layer of small radially elongate cortical cells. Plants monoecious; carpogonial branch three-celled, oriented straight to the thallus surface, occurring in locally swelled areas all along the cortex of cylindrical lateral branchlets. Presumably nonprocarpic. Carposporophyte spherical, with a small central fusion cell, bearing radial gonimoblast filaments terminating in chains of two to three carposporangia oriented toward the surface. Cystocarps globular and with wide ostioles, occurring singly or in clusters of two to three in subterminal, median or basal positions on cylindrical lateral branchlets. Spermatangia in isolated clusters of two to three, occurring in sunken areas of the cortex at the basal part of the cystocarpic lateral branchlets. Tetrasporangia zonate, each associated with once-divided club-shaped sterile paraphyses and scattered among normal cortical cells in slightly swollen terminal areas of lateral branchlets.
The most recent alteration to this page was made on 2017-05-01 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: Pinnatiphycus is named for the terete, pinnately arranged unbranched laterals that conspicuously characterize the thalli.
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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=50735
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 01 May 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 25 April 2024
