Dictyota J.V.Lamouroux, 1809, nom. et typ. cons.

Holotype species: Dictyota dichotoma (Hudson) J.V.Lamouroux

Original publication and holotype designation: Lamouroux, J.V.F. (1809). Exposition des charactères du genre Dictyota, et tableu des espèces qu'il referme. Journal de Botanique (Desvaux) 2: 38-44.

Request PDF

Description: Thallus flattened, ribbon-like, erect or prostrate, with smooth, dentate, crenulate or ciliate margins; attachment by basal rhizoids or marginal rhizoidal processes scattered along the edges of the thallus or restricted to the base, stoloniferous holdfasts present or absent; branching dichotomous, anisotomous or alternate, rarely falcate; apices obtuse, rounded, apiculate or acute; phaeophycean hairs and superficial proliferations present or absent; thallus differentiated into a cortex and a medulla, the relative number of layers variable. Sporangia isolated, grouped in sori or surrounding a central hair tuft, lacking a conspicuous involucrum of sterile cells, subtended by a single stalk cell. Antheridia subtended by a single stalk cell, arranged in sori, surrounded by hyaline, unicellular paraphyses. Oogonia subtended by a stalk cell, arranged in sori.

The most recent alteration to this page was made on 2015-10-19 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Silberfeld, T., Rousseau, F. & Reviers, B. de (2014). An updated classification of brown algae (Ochrophyta, Phaeophyceae). Cryptogamie Algologie 35(2): 117-156, 1 fig., 1 table.

Comments: Cosmopolitan distribution.

Loading names...
Loading notes...
Loading common names...
Loading references...

Verification of Data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=51

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 19 October 2015. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 15 June 2024

Currently in AlgaeBase: