153,567 species and infraspecific names are in the database, 20,980 images, 59,365 bibliographic items, 410,823 distributional records.

Hypneocolax Børgesen, 1920

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Gigartinales
Family Cystocloniaceae

Holotype species: Hypneocolax stellaris Børgesen

Original publication and holotype designation: Børgesen, F. (1920). The marine algae of the Danish West Indies. Part 3. Rhodophyceae (6). Dansk Botanisk Arkiv 3: 369-504, Figs 361-435.
 Download PDF

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as masculine.

Most recent taxonomic treatment adopted: Reynolds, S.C.P. (2002). A catalogue of alien plants in Ireland. pp. [4], 1-413. Dublin: National Botanical Gardens, Glasnevin.

Description: Plants form diminutive clusters of axes radiating from a basal region of emergent endophytic filaments. Although pigment is usually absent or greatly reduced compared to the hosts, which are always species of Hypnea, some plants can be darkly pigmented (Mshigeni 1976), suggesting that parasitism may be facultative. Reproductive structures are generally typical of the family, although bisporangia rather than tetrasporangia are the general product of tetrasporophytes. Studies of the host/parasite interaction by Apt (1984) show that the infestations reduce host growth rates by 40-70%, but do not affect carrageenan quality or quantity.

Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 13 Mar 2014 by M.D. Guiry.

Comments: Distribution: Originally described from the Caribbean Sea, Hypneocolax is now also recorded in Hawaii and southern Australia.

Numbers of names and species: There are 1 species names in the database at present, of which 1 has been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Click here to also show infraspecific names in the list below.

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

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.

Created: 28 December 2000 by M.D. Guiry

Verified by: 13 March 2014 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=39976

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 13 November 2018.

SITE © 1996 - 2018 M.D. Guiry. All rights reserved.

Website Design : 249 Design Studio