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''Castanea ozarkensis'', also known as the Ozark chinkapin (also spelled chinquapin), is a species of tree that is native to the United States. It is in the ''Castanea'' genus that includes
chestnut The chestnuts are the deciduous trees and shrubs in the genus ''Castanea'', in the beech family Fagaceae. They are native to temperate regions of the Northern Hemisphere. The name also refers to the edible nuts they produce. The unrelat ...
s and types of chestnut known as chinkapins.


Taxonomy

''Castanea ozarkensis'' was described by
William Willard Ashe William Willard Ashe (June 4, 1872 – March 18, 1932) was an American forester and botanist. He was known as a prolific collector of plant specimens and an early proponent of conservationism in the Southern United States. Early life Ashe w ...
and published in the ''Bulletin of the Torrey Botanical Club'' 50 (11): 360-361. 1923. Some authorities consider it a variant of the Allegheny chinkapin (''C. pumila'') as ''C. pumila ozarkensis''.


Distribution

It grows in the
Ozark Mountains The Ozarks, also known as the Ozark Mountains, Ozark Highlands or Ozark Plateau, is a physiographic region in the U.S. states of Missouri, Arkansas, Oklahoma and the extreme southeastern corner of Kansas. The Ozarks cover a significant portio ...
and
Ouachita Mountains The Ouachita Mountains (), simply referred to as the Ouachitas, are a mountain range in western Arkansas and southeastern Oklahoma. They are formed by a thick succession of highly deformed Paleozoic strata constituting the Ouachita Fold and Thru ...
of
Missouri Missouri is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it is bordered by eight states (tied for the most with Tennessee ...
,
Arkansas Arkansas ( ) is a landlocked state in the South Central United States. It is bordered by Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, and Texas and Oklahoma to the west. Its name is from the Osage ...
,
Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...
,
Louisiana Louisiana , group=pronunciation (French: ''La Louisiane'') is a state in the Deep South and South Central regions of the United States. It is the 20th-smallest by area and the 25th most populous of the 50 U.S. states. Louisiana is borde ...
and
Oklahoma Oklahoma (; Choctaw language, Choctaw: ; chr, ᎣᎧᎳᎰᎹ, ''Okalahoma'' ) is a U.S. state, state in the South Central United States, South Central region of the United States, bordered by Texas on the south and west, Kansas on the nor ...
. It is possibly
extirpated Local extinction, also known as extirpation, refers to a species (or other taxon) of plant or animal that ceases to exist in a chosen geographic area of study, though it still exists elsewhere. Local extinctions are contrasted with global extinct ...
from
Alabama (We dare defend our rights) , anthem = "Alabama (state song), Alabama" , image_map = Alabama in United States.svg , seat = Montgomery, Alabama, Montgomery , LargestCity = Huntsville, Alabama, Huntsville , LargestCounty = Baldwin County, Al ...
.


Ecology

The nuts it produces provided food for indigenous people, early settlers, and various animals including
eastern gray squirrel The eastern gray squirrel (''Sciurus carolinensis''), also known, particularly outside of North America, as simply the grey squirrel, is a tree squirrel in the genus ''Sciurus''. It is native to eastern North America, where it is the most prodi ...
,
chipmunk Chipmunks are small, striped rodents of the family Sciuridae. Chipmunks are found in North America, with the exception of the Siberian chipmunk which is found primarily in Asia. Taxonomy and systematics Chipmunks may be classified either as ...
,
white-tailed deer The white-tailed deer (''Odocoileus virginianus''), also known as the whitetail or Virginia deer, is a medium-sized deer native to North America, Central America, and South America as far south as Peru and Bolivia. It has also been introduced t ...
,
turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a list of transcontinental countries, transcontinental country located mainly on the Anatolia, Anatolian Peninsula in Western Asia, with ...
, and
bobwhite quail The northern bobwhite (''Colinus virginianus''), also known as the Virginia quail or (in its home range) bobwhite quail, is a ground-dwelling bird native to Canada, the United States, Mexico, and Cuba, with introduced populations elsewhere in th ...
.


Conservation

''Castanea ozarkensis'' is susceptible to
chestnut blight The pathogenic fungus ''Cryphonectria parasitica'' (formerly ''Endothia parasitica'') is a member of the Ascomycota (sac fungi). This necrotrophic fungus is native to East Asia and South East Asia and was introduced into Europe and North America ...
and has been devastated by the disease, and largely now grows only as a small tree or shrub. However, several mature individuals have survived the blight, with over 45 such individuals located so far since the 2000s. The discovery of these specimens has spurred an ongoing project to restore the species by using the offspring of these trees, headed by the Ozark Chinkapin Foundation. An analysis has also found that Ozark chinkapin populations contain far more genetic diversity than those of the
American chestnut The American chestnut (''Castanea dentata'') is a large, fast-growing deciduous tree of the beech family native to eastern North America. As is true of all species in genus Castanea, the American chestnut produces burred fruit with edible nuts. ...
, which was also devastated by the chestnut blight. The study also found that the Ozark chinkapin may actually be ancestral to the American chestnut and Allegheny chinkapin, rather than the other way around. Another study has found that the surviving Ozark chinkapins are even more resistant to the chestnut blight than the Chinese chestnut, which is not affected by the blight. A large individual, designated a Champion Tree, grows in
Barry County, Missouri Barry County is a county located in the southwest portion of the U.S. state of Missouri. As of the 2020 Census, the population was 34,534. Its county seat is Cassville. The county was organized in 1835 and named after William Taylor Barry, a ...
.


See also

* American chinquapin


References

{{Taxonbar, from=Q5756707 ozarkensis Edible nuts and seeds Trees of the Southeastern United States Plants described in 1923