''Carex'' subg. ''Vignea'' is a
subgenus
In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus.
In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between t ...
of the sedge genus ''
Carex'', containing around 300 of the 2000 species in the genus.
Its members are characterised by having bisexual, sessile
spikes, where the female flowers have two
stigmas each.
''Carex'' subg. ''Vignea'' has been repeatedly found to be
monophyletic
In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic gro ...
in
molecular phylogenetic
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...
analysis, with ''
Carex gibba
''Carex gibba'' is a species of true sedge in the family Cyperaceae, native to Vietnam, southern and central China, Manchuria, the Korean Peninsula, and Japan. It is basal in its subgenus ''Vignea''.
References
gibba
Gibba (pen name of Fr ...
'' (which, exceptionally for the section, has three stigmas per female flower) as the
sister group
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree.
Definition
The expression is most easily illustrated by a cladogram:
Taxon A and t ...
to the rest of the subgenus.
It contains the following sections:
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''Carex'' sect. ''Ammoglochin''
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''Carex'' sect. ''Baldenses''
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''Carex'' sect. ''Bracteosae''
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''Carex'' sect. ''Chordorrhizae''
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''Carex'' sect. ''Deweyanae''
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''Carex'' sect. ''Dispermae''
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''Carex'' sect. ''Divisae''
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''Carex'' sect. ''Echinochloomorphae''
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''Carex'' sect. ''Foetidae''
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''Carex'' sect. ''Gibbae''
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''Carex'' sect. ''Glareosae''
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''Carex'' sect. ''Grallatoriae''
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''Carex'' sect. ''Heleoglochin''
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''Carex'' sect. ''Holarrhenae''
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''Carex'' sect. ''Incurvae''
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''Carex'' sect. ''Inversae''
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''Carex'' sect. ''Macrocephalae''
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''Carex'' sect. ''Multiflorae''
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''Carex'' sect. ''Ovales''
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''Carex'' sect. ''Phaestoglochin''
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''Carex'' sect. ''Phleoideae''
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''Carex'' sect. ''Physodeae''
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''Carex'' sect. ''Physoglochin''
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''Carex'' sect. ''Potosinae''
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''Carex'' sect. ''Remotae''
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''Carex'' sect. ''Stellulatae''
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''Carex'' sect. ''Stenorhynchae''
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''Carex'' sect. ''Thomsonianae''
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''Carex'' sect. ''Vulpinae''
See also
*
List of ''Carex'' species
References
{{Taxonbar, from=Q18324117
Carex
Plant subgenera