species A taxonomic category ranking immediately below a genus and including closely related, morphologically similar individuals which actually or potentially inbreed['spi:ʃi:z]rzecz.
a group of plants or animals having similar appearance(plural species • This species of animal is unique to the area.wiktionary.org • We may see many such [dust] storms in the decades ahead, along with species extinctions, radical disturbance of ecosystems, and intensified social conflict over land and water.); a category in the classification of organisms, ranking below genus; a taxon at that rank(plural species • Hence, in determining whether a form should be ranked as a species or a variety, the opinion of naturalists having sound judgment and wide experience seems the only guide to follow.wiktionary.org • Firstly, I continue to base most species treatments on personally collected material, rather than on herbarium plants. • Plant breeding is always a numbers game. […] The wild species we use are rich in genetic variation, and individual plants are highly heterozygous and do not breed true. In addition, we are looking for rare alleles, so the more plants we try, the better.)
wiktionary.org • a new species of war)