152,885 species and infraspecific names are in the database, 20,939 images, 59,127 bibliographic items, 408,269 distributional records.

Archestenogramma C.W.Schneider, Chengsupanimit & G.W.Saunders, 2011

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

Holotype species: Archestenogramma profundum C.W.Schneider, Chengsupanimit & G.W.Saunders

Original publication and holotype designation: Schneider, C.W., Chengsupanimit, T. & Saunders, G.W. (2011). A new genus and species from the North Atlantic. Archestenogramma profundum (Phyllophoraceae, Rhodophyta), with taxonomic resolution of the orphaned Leptofauchea brasiliensis. European Journal of Phycology 46(4): 416-441.

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as neuter.

Nomenclatural notes
Compounds ending in "-gramma" are treated as neuter. - (16 Aug 2017) - M.D. Guiry

Description: Plants consisting of upright ligulate fronds; blades simple to irregularly or subdichotomously branched, with smooth margins; cortex single-layered, consisting of small pigmented cells, which are irregularly rounded to angular in surface view and arranged in an arcuate pattern over the larger medullary cells ; medulla of large colourless, thick-walled cells, in 1-2 (-3) layers; tetrasporangia cruciately divided, in anticlinally produced chains, aggregated in small, elevated, rounded nemathecia scattered over the blade surfaces; gametophytes dioecious; gonimoblast filaments developing inwardly between the medullary cells, so that the carposporophytes are deeply embedded and at maturity protrude on both surfaces of the frond, where they are scattered on the distal portions; the carposporophytes have multi-layered pericarps with secondary pit connections between the anticlinal cell rows and lack ostioles; spermatangia are formed in slightly elevated sori on mid-blade surfaces and are produced from spermatangial mother cells cut off from cortical cells.

The most recent alteration to this page was made on 16 Aug 2017 by M.D. Guiry.

Comments: The new genus is basal to the clade that includes the genus Stenogramma, thus the prefix arche- (Gr.) refers to its earlier or ancient phylogenetic status relative to the most closely related member of the family.

Numbers of names and species: There are 2 species names in the database at present, of which 2 have 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: 19 January 2012 by Wendy Guiry

Verified by: 16 August 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=51258

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 21 September 2018.

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