Oxytheca
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''Oxytheca'' is a
genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...
of
plant Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclu ...
s in the family
Polygonaceae The Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed—buckwheat family in the United States. The name is based on the genus '' Polygonum'', and was first used by Antoine Laurent de Jussieu in 1 ...
with seven
species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
found in dry and temperate parts of the
Americas The Americas, which are sometimes collectively called America, are a landmass comprising the totality of North and South America. The Americas make up most of the land in Earth's Western Hemisphere and comprise the New World. Along with th ...
. The taxonomy of this genus is in flux, with some species often listed under tentative new names. Species include: *'' Oxytheca dendroidea'' *'' Oxytheca parishii'' = '' Acanthoscyphus parishii'' *'' Oxytheca perfoliata'' *'' Oxytheca watsonii''


References


External links


Jepson Manual Treatment

USDA Plants Profile
Polygonaceae genera {{Polygonaceae-stub