Naccariaceae is a family of red algae in the order Bonnemaisoniales, with 3 monotypic genera that are found in both the Pacific and Atlantic Oceans.
History
It was circumscribed by
Harald Kylin in 1928.
When established the family only had 2 genera,
Atractophora and
Naccaria.
[Christopher S. Lobban, Michael James Wynne and Lobban (Editors) ] It was also suggested in 1987 (by Gabrielson and Garbary) and in 1997 (by Abbot) that the genera should be placed in the
Gigartinales Order. But (Hommersand and Fredericq, 1990) said that the similarities in nutritive cells and carpospore germination, noted that the order Bonnemaisoniales was better used instead,
[Debashish Bhattacharya (editor) ] Womersley, 1996 agreed.
[John Marinus Huisman ] The family is not
monophyletic.
[
]
Description
They have a thallus (gametophyte) which is erect, Mucous membrane and irregularly radially branched. The structure is uniaxial; axial cells initially ecorticate (without a cortex), but eventually with a cortex, or surrounded by rhizoids (protuberances that extend from the lower epidermal cells) that can be secondarily inflated. They have determinate branches arising in a spiral or whorled pattern. The plants are usually Dioecy. The spermatangia in clusters on outer cells. The Carpogonium (the female organs) are borne on basal cells of lateral branches, with nutritive cells. The fertilised zygote generally fusing with the hypogynous cell, then producing a diffuse or discrete gonimoblast lacking a pericarp (ovary wall). Tetrasporophytes, where known, are microscopic and filamentous, with lateral or terminal tetrahedrally divided tetrasporangia.
The gonimoblast filaments develop directly from the fertilized carpogonium though the carpogonium may fuse with the cell in the carpogonial branch (Kylin, 1928).[Indian Botanical Society ]
Genera
As accepted by GBIF;
Also Liagorothamnion is listed as an accepted genus by WoRMS and AlgaeBase and placed within the Order Atractophorales (subclass Rhodymeniophycidae and class Florideophyceae).
Distribution
Atractophore is found in the Atlantic Europe, while Naccaria is widespread in both the Pacific and Atlantic Oceans, lastly the genus of Reticulous is only found around the Hawaiian Islands.[ David J. Garbary and G. Robin South (editors) ][Isabella Aiona Abbott ]
Other sources
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Kamiya, M., Lindstrom, S.C., Nakayama, T., Yokoyama, A., Lin, S.-M., Guiry, M.D., Gurgel, F.D.G., Huisman, J.M., Kitayama, T., Suzuki, M., Cho, T.O. & Frey, W. 2017. Rhodophyta. In: Syllabus of Plant Families, 13th ed. Part 2/2: Photoautotrophic eukaryotic Algae. (Frey, W. Eds), pp. i–xii, 1–171. Stuttgart: Borntraeger Science Publishers. ISBN 978-3-443-01094-2
External links
