| 词条 | Gersemia |
| 释义 |
| image = Gersemia antarctica, near McMurdo Station, Ross Island.JPG | image_caption = Gersemia antarctica | taxon = Gersemia | authority = Marenzeller, 1877 [1] | subdivision_ranks = Species | subdivision = }} Gersemia is a genus of soft corals in the family Nephtheidae. Species in this genus are found in cold temperate and polar seas at depths ranging from {{convert|20|m}} to over {{convert|2000|m}}. The type species is Gersemia loricata. CharacteristicsColonies of Gersemia are arborescent, growing erectly with one main stem. The polyps are most numerous at the branch tips and are unable to retract into the calyces. The walls of the stalk and branches are stiffened with sclerites which are often brightly coloured. Corals in this genus do not contain zooxanthellae, the microalgae symbionts found in some other corals.[2] SpeciesThe World Register of Marine Species includes the following species in the genus:[1]
References1. ^1 {{cite WoRMS |author= Martinez, Olga |year=2010 |title=Gersemia; Marenzeller, 1877 |id=146953 |accessdate=2012-01-24 |db=}} {{Taxonbar|from=Q3273482}}2. ^The nephtheid soft coral genus Gersemia Marenzeller, 1878, with the description of a new species from the northeast Pacific and a review of two additional species (Octocorallia: Alcyonacea) 1 : Alcyonacea |
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