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Plocamium

{{Short description|Genus of algae}}

{{Automatic taxobox

| image = Plocamium corallorhiza.jpg

| image_caption= Plocamium corallorhiza from South Africa

| taxon = Plocamium

| authority = J.V. Lamouroux, 1813

| type_species = Fucus cartilagineus

| type_species_authority = Linnaeus, 1753

}}

{{multiple image

| direction = vertical

| width = 220

| image1 =Plocamium sp.jpg

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| image2 =Red seaweed, Plocamium sp..jpg

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| caption2 =Plocamium sp. from South Africa

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Plocamium is a genus of red algae in the family Plocamiaceae. It contains around 40 species and has a cosmopolitan distribution in temperate seas, although it is most diverse in the southern hemisphere.{{cite journal |last1=Cremades |first1=Javier |last2=Barreiro |first2=Rodolfo |last3=Maneiro |first3=Isabel |last4=Saunders |first4=Gary W. |title=A new taxonomic interpretation of the type of Plocamium cartilagineum (Plocamiales, Florideophyceae) and its consequences |journal=European Journal of Phycology |date=2011 |volume=46 |issue=2 |pages=125–142}} It is widely distributed in tropical and also warm-temperate and cold-temperate seas, such as northern Europe,{{cite journal |last1=Saunders |first1=Gary W. |last2=Lehmkuhl |first2=K. Virginia |title=Molecular divergence and morphological diversity among four cryptic species of Plocamium (Plocamiales, Florideophyceae) in northern Europe |journal=European Journal of Phycology |date=2005 |volume=40 |issue=3 |doi=10.1080/09670260500192935|doi-access=free }} the northern Arabian Sea and western Australia.{{cite journal |last1=Wynne |first1=Michael |date=November 2002 |title=A description of Plocamium fimbriatum sp. nov. (Plocamiales, Rhodophyta) from the Sultanate of Oman, with a census of currently recognized species in the genus |url= |journal=Nova Hedwigia |volume=75 |issue=3-4 |pages=333-356 |doi=10.1127/0029-5035/2002/0075-0333 |access-date=}} They are also found in the Antarctic regions of Admiralty Bay (maritime Antarctica, Antarctic Peninsula) and Terra Nova Bay (in the Ross Sea).{{cite journal |last1=Majewska |first1=Roksana |last2=Kuklinski |first2=Piotr |last3=Balazy |first3=Piotr |last4=Yokoya |first4=Nair Sumie |last5=Martins |first5=Aline Paternostro |last6=De Stefano |first6=Mario |title=A comparison of epiphytic diatom communities on Plocamium cartilagineum (Plocamiales, Florideophyceae) from two Antarcticareas |journal=Polar Biology |date=2014 |doi=10.1007/s00300-014-1578-7}}

Description

Plocamium has erect elliptical thalli that grow up to {{convert|50|cm|in|abbr=on}} in length. They are bright red in color with strongly flattened delicately branching fronds that further divide into two to five smaller branchlets.{{cite web|url=http://www.mbari.org/staff/conn/botany/reds/eric/PHYS.HTM|archive-url=https://web.archive.org/web/20040712005424/http://www.mbari.org/staff/conn/botany/reds/eric/PHYS.HTM|url-status=dead|archive-date=July 12, 2004|title=Plocamium: the delicate beauty|publisher=MBARI, Phycological Society of America|accessdate=February 7, 2012}}{{cite web |url=http://www.algaebase.org/search/genus/detail/?genus_id=27&-session=abv4:CB54B42A050e816730vwh1B7FB79|title=Plocamium J.V.Lamouroux, 1813: 137|author=M.D. Guiry|date=2012|work=AlgaeBase|publisher= National University of Ireland|accessdate=February 7, 2012}}

Cystocarps (fruiting parts) are either scattered along the frond margins or found on special short fertile branches, and lack a specialized pore for carpospore release. Tetrasporangia are borne in specialized stichidia (branches of the thallus) of various morphologies.

Accepted species

Species classified under the genus include the following:{{cite web|url=http://www.nilauro.com/plocamium/biogeog.htm|title=World Distribution of Plocamium sp.|author1=Nilauro Markus |author2=Marla Ranelletti |author3=Christopher Loo |name-list-style=amp |date=1999|publisher=Plocamium pacificum|accessdate=February 7, 2012}}{{cite WoRMS|author=M.D. Guiry|year=2012|id=144223 |title=Plocamium J.V. Lamouroux, 1813 |db=algae|accessdate=February 7, 2012}}

;Nomina dubia:

References

{{Reflist}}

{{Taxonbar|from=Q7205050}}

Category:Red algae genera

Category:Florideophyceae