semi-species
semi-species A group of organisms that are taxonomically intermediate between a race and a species, with reduced outbreeding and gene flow (i.e. with incomplete reproductive isolating mechanisms). Semi-species are thought to represent advanced stages of speciation.
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Sibling Species , sibling species Species that are identical in outward appearance or very nearly so. Despite the similarity, however, they qualify as species by being… Indifferent Species , indifferent species A species with no real affinity for any particular community, but which is not rare (as an accidental species would be). It is fi… preferential species , preferential species In phytosociology, a species that is present with varying abundance in several communities, but is especially abundant and vigor… Constant Species , constant species(constancy) In phytosociology, a species common to a particular association or community, but not necessarily confined to that commun… Species , The term species, in the most general sense, refers to the various kinds of living things. Thus, species are generally recognized as distinct, fully… accidental species , accidental species One of five classes of fidelity used by the Braun-Blanquet school of phytosociology in the description and classification of plant…
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semi-species