''Aizopsis'' is a genus of the succulent family
Crassulaceae
The Crassulaceae (from Latin ''crassus'', thick), also known as the stonecrop family or the orpine family, are a diverse family of dicotyledon flowering plants characterized by succulent leaves and a unique form of photosynthesis, known as Crass ...
(stonecrop family), found in east Asia.
Description
Flowers yellow,
chromosome numbers
Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Sets of chromosomes refer to the number of maternal and paternal chromosome copies, respectively ...
, x=16.
Taxonomy
In 1978, Ohba divided up the very large and cosmopolitan genus ''
Sedum
''Sedum'' is a large genus of flowering plants in the family Crassulaceae, members of which are commonly known as stonecrops. The genus has been described as containing up to 600 species, subsequently reduced to 400–500. They are leaf succulen ...
'', placing ''Sedum aizoon'' and allied species into ''Sedum'' subgenus ''Aizoon''. In 1995, he
segregated these species into a separate genus, ''Aizopsis''. However, other authors included these species in another segregate, ''
Phedimus
''Phedimus'' is a genus of the succulent family Crassulaceae (stonecrop family), with about 18 species, distributed in eastern Europe and Asia. The genus is described with two subgenera, but one of these is also recognized as a separate genus, '' ...
'', as subgenus ''Aizoon''. Subsequent
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 established ''Aizopsis'' as a
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 ''Phedimus'', which with distinguishing characteristics justified their retention as a separate genus, although the distinction has not been universally adopted.
Distribution
East Asia
References
Bibliography
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full text at'
ResearchGate
ResearchGate is a European commercial social networking site for scientists and researchers to share papers, ask and answer questions, and find collaborators. According to a 2014 study by ''Nature'' and a 2016 article in ''Times Higher Education'' ...
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Crassulaceae
Crassulaceae genera
Historically recognized angiosperm genera
{{Crassulaceae-stub