Petroglossum Hollenberg, 1943
Holotype species: Petroglossum pacificum Hollenberg
Original publication and holotype designation: Hollenberg, G.J. (1943). New marine algae from southern California II. American Journal of Botany 30: 571-579.
Request PDFPrecise date of publication: 18 November 1943
Description: Plants are generally less than 5 cm in height and consist of flattened, linear, regularly to irregularly subdichotomous blades arising singly or in clusters from an encrusting or stoloniferous base. Spermatangia form in nemathecia located centrally or terminally on the axes. Cystocarps form singly toward the center of the fronds or in short lateral proliferations, depending on the species. Ostioles may or may not be present, again depending on species. Tetrasporangial nemathecia generally occur singly toward the centers of branch units. Petroglossum differs from Phyllophora in producing spermatangial mother-cell clusters flush with the branch surface, as opposed to in cavities (Schneider and Searles 1976).
Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 2011-08-30 by M.D. Guiry.
Taxonomic status: This name is of an entity that is currently accepted taxonomically.
Most recent taxonomic treatment adopted: Schneider, C.W. & Wynne, M.J. (2007). A synoptic review of the classification of red algal genera a half a century after Kylin's "Die Gattungen der Rhodophyceen". Botanica Marina 50: 197-249.
Comments: Distribution: The type and a second species are endemic to southern California, where they occur on low intertidal to subtidal rocks. The third species was recently described from deep (28 m) subtidal habitats in North Carolina (Schneider and Searles 1976).
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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,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=37272
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 30 August 2011. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 20 April 2024
