Hydropuntia Montagne, 1842

Holotype species: Hydropuntia urvillei Montagne

Currently accepted name for the type species: Gracilaria urvillei (Montagne) I.A.Abbott

Original publication and holotype designation: Montagne, [J.F.] C. (1842). Prodromus generum specierumque phycearum novarum, in itinere ad polum antarcticum...ab illustri Dumont d'Urville peracto collectarum, notis diagnosticis tantum huc evulgatarum, descriptionibus verò fusioribus nec non iconibus analyticis iam iamque illustrandarum. pp. [1-]16. Parisiis [Paris]: apud Gide, editorem.

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Description: Thalli crassullaceous to cartilaginous, with percurrent axes, slightly compressed, constricted at the nodes. Spermatangial conceptacles of the medullary type (i.e., Hydropuntia-type, including other definitions such as the Polycavernosa-type, and the Henriquesiana-type sensu Yamamoto [1984]), scattered, embedded in the cortex and outer medulla; young conceptacles oval, in deep pits surrounded by stretched subcortical cells, becoming lobed as they extend laterally and longitudinally. Cystocarps broad-based, often coming into close contact with the outer pericarp composed of tightly packed fusiform cells bearing short carposporangial chains at periphery. Tubular nutritive cells short, fusing with cells in the inner layer of the outer pericarp that in turn fuse forming tubular pericarp fusion cells in oblique or straight series; outer pericarp thick.

Information kindly contributed by Gurgel et al. 2018 but may now be outdated.

Taxonomic status: This name is currently regarded as a synonym of Gracilaria.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Lyra, D. de M., Iha, C., Grassa, C.J., Cai, L., Zhang, H.G., Lane, C., Blouin, N., Oliveira, M.C., Nunes, J. M de C. & Davis, C.C. (2021). Phylogenomics, divergence time estimation and trait evolution provide a new look into the Gracilariales (Rhodophyta). Molecular Phylogenetics and Evolution 165(107294): [1-14], 4 figures.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=42498

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 23 July 2024. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 21 November 2024