Yatabella Okamura, 1900
Holotype species: Yatabella hirsuta Okamura
Currently accepted name for the type species: Gelidium hirsutum (Okamura) G.H.Boo & R.Terada
Original publication and holotype designation: Okamura, K. (1900). Nihon kaiso zusetsu. Illustrations of the marine algae of Japan. Vol. I pp. 1-14, pls I-V. Tokyo: Keigyosha & Co., 1, Urajimbocho, Kanda.
Request PDFDescription: Erect thallus is initially filiform, attached to the substratum by a short, fibrous, root-like creeping axis. Erect axes up to 20 cm high, branching from the base without any definite order. Branches arising on all sides, often 3-4 arranged along one side. They may grow up into flat, lanceolate or oblong segments but often they end in slender, filiform tips which adhere to the substratum. Thus, the plant or part of it can become decumbent. With the exception of the base of axes and some branches and of the upper, slenderer, filiform portions, all plant parts are invested with multifid-echinate warts which are peltate in insertion and are fixed to the branch by a slender neck. The warts bear projections on the margins and surface, are set as if imbricated, and the rachis may be seen through them, when not much crowded. In cross section the cortex appears formed by 3-4 layers of small, rounded, pigmented cortical cells while the medulla is composed of larger cells, devoid of pigments, disposed in direction parallel to the main axis and surrounded by numerous and densely packed slender, longitudinally running filaments. Tetrasporangial sori are produced in small, roundish or elongato-oval, shortly stipitate sporophylls which are formed by the prolongation of spinose ramelli of the echinate ramuli. The tetraspores are rounded and cruciately divided. The cystocarps are minute, globular or oval, with or without apical prominence and furnished with slightly swollen pedicels.
Information kindly contributed by B. Santelices but may now be outdated.
Taxonomic status: This name is currently regarded as a synonym of Gelidium.
Most recent taxonomic treatment adopted: Boo, G.H., Le Gall, L., Miller, K.A., Freshwater, D.W., Wernberg, T., Terada, R., Yoon, K.J. & Boo, S.M. (2016). A novel phylogeny of the Gelidiales (Rhodophyta) based on five genes including the nuclear CesA, with descriptions of Orthogonacladia gen. nov. and Orthogonacladiaceae fam. nov. Molecular Phylogenetics and Evolution 101: 359-372, 6 figs.
Comments: The genus is restricted to the coast of Japan (Hiuga and Kaposhima-prefecture), living subtidally, on rocky bottoms, down to about 10 m deep.
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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=41495
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 30 September 2016. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 April 2024
