Viola egglestonii

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Viola egglestonii
Viola egglestonii.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Violaceae
Genus: Viola
Species:
V. egglestonii
Binomial name
Viola egglestonii
Brainerd

Viola egglestonii, commonly known as glade violet, is a species herbaceous plant in the violet family. It is native to a small area of eastern North America, only being found in limestone cedar glades of the Interior Low Plateau and Ridge and Valley ecoregions of Alabama, Georgia, Indiana, Kentucky, and Tennessee. [1]

Viola egglestonii is a perennial, stemless blue violet, distinguished by its deeply lobed leaves, bearded petals, and glabrous leaves. Peak blooming occurs in early to mid April. [2] The cedar glade habitat which it is endemic to is generally rare, and populations of this species are tracked in all of the states it is found in except Tennessee. It is the most common in Tennessee's Nashville Basin due to the region's relative abundance of limestone cedar glades.

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The Nashville Basin, also known as the Central Basin, is a term often used to describe the area surrounding Murfreesboro, Tennessee, in which Nashville is located. The Central Basin was caused by an uplifting which produced a dome known as the Nashville Dome. The Nashville Dome is evidenced by the underlying rock strata that all dip downwards away from Nashville. The uplifting of the Nashville Dome fractured overlying strata, making it more easily eroded and thus the "dome" resulted in a "basin". Uplifted strata in the center of a geological dome have higher potential erosive energy than the surrounding strata, because they are physically higher. Erosion thus acts on the uplifted area at a greater rate than on the surrounding flat-lying area, creating a low area, i.e. a basin. This area is more correctly referred to as the "Central Dome" of Tennessee.

Calcareous glade Calcareous glades occur where bedrock such as limestone occurs near or at the surface, and have very shallow and little soil development.

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<i>Echinacea tennesseensis</i> Species of flowering plant

Echinacea tennesseensis, also known as the Tennessee coneflower or Tennessee purple coneflower, is a flowering plant in the sunflower family, endemic to the cedar glades of the central portion of the U.S. state of Tennessee.

<i>Astragalus bibullatus</i> Species of legume

Astragalus bibullatus, the limestone glade milkvetch or Pyne's ground plum, is an endangered species of flowering plant that is endemic to the cedar glades of the central basin of Tennessee in the United States. It is found in only eight populations located within a few kilometers of each other in Rutherford County, Tennessee.

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Cedars of Lebanon State Park State park in Tennessee, United States

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<i>Paysonia lyrata</i> Species of flowering plant

Paysonia lyrata is a rare species of flowering plant in the family Brassicaceae known by the common name lyreleaf bladderpod. It is endemic to Alabama in the United States, where it is known from only three occurrences. It is federally listed as a threatened species.

<i>Astragalus tennesseensis</i> Species of legume

Astragalus tennesseensis is a species of flowering plant in the legume family known by the common name Tennessee milkvetch. It is native to the United States, where it is known from Illinois, Indiana, Tennessee and Alabama. Most of the occurrences are in Tennessee.

<i>Clematis fremontii</i> Species of flowering plant in the buttercup family Ranunculaceae

Clematis fremontii is a species of flowering plant in the buttercup family known as Fremont's leather flower. It is endemic to the United States where it is known from several disjunct populations throughout the central and southeastern states. Previously unknown populations were discovered in the mid-2000s in Tennessee and Georgia. Other names for this plant include Fremont's crowsfoot, Fremont's leather-plant, leatherplant, and rattleweed.

Interior Low Plateaus

The Interior Low Plateaus are a physiographic region in eastern United States. It consists of a diverse landscape that extends from north Alabama across central Tennessee and Kentucky into southern Illinois, Indiana, and Ohio. Its natural communities are a matrix of temperate forests, woodlands, and prairies.

<i>Leavenworthia</i> Genus of flowering plants

Leavenworthia is a genus of flowering plants in the family Brassicaceae. It includes about eight species native to the southern and southeastern United States. They are known generally as gladecresses.

<i>Pediomelum subacaule</i> Species of legume

Pediomelum subacaule is a species of flowering plant in the legume family known by the common names Nashville breadroot and whiterim scurfpea. It is native to a small area of Eastern North America, only being found in limestone cedar glades of the Interior Low Plateau and Ridge and Valley ecoregions of Alabama, Georgia, and Tennessee.

<i>Phlox bifida</i> Species of flowering plant

Phlox bifida, the cleft phlox or sand phlox, is native to the Midwestern United States, the Ozarks, and the cedar glades of Kentucky and Tennessee. It is found on rock outcrops, limestone glades, and in generally dry or sandy areas.

<i>Grindelia lanceolata</i> Species of flowering plant

Grindelia lanceolata is a species of flowering plant in the aster family known by the common name narrowleaf gumweed.

<i>Solidago gattingeri</i>

Solidago gattingeri, common name Gattinger's goldenrod, is a species of plant that is a goldenrod. It is native only to the Ozark Mountains of Arkansas and Missouri and to the Nashville Basin of Tennessee. Its preferred habitat is cedar glades, cedar barrens, and limestone outcrops. It is adapted to dry habitats.

<i>Lobelia gattingeri</i> Species of flowering plant

Lobelia gattingeri is a species of flowering plant in the bellflower family commonly called Gattinger's lobelia. It is endemic to calcareous cedar glades and barrens. It has a small range, native only to middle Tennessee, northern Alabama, and one site in the Pennyroyal Plain of Kentucky.

<i>Lithospermum molle</i> Species of flowering plant in the borage family Boraginaceae

Lithospermum molle, the softhair marbleseed, is a species of flowering plant in the forget-me-not family. This species is a narrow endemic, native primarily to the Nashville Basin of Tennessee, where it is found in limestone prairies near cedar glades. There are disjunct populations in similar habitats in the Ozark Mountains of Missouri, in northwest Alabama, in Logan and Warren County, Kentucky as well as other small areas of Tennessee. Outside of Tennessee, it is very rare and perhaps no longer exists in Alabama and Kentucky due to habitat destruction. Because of its highly restricted geographic range, this species is considered vulnerable.

<i>Leavenworthia torulosa</i> Species of flowering plant

Leavenworthia torulosa, the necklace gladecress, is a species of plant in the mustard family. It is native to the eastern United States where it is only found near limestone cedar glades of Alabama, Georgia, Kentucky, and Tennessee. It is considered rare in all states it is found except Tennessee, where it is common in the Nashville Basin due to the abundance of available habitat.

<i>Gratiola quartermaniae</i> Species of flowering plant

Gratiola quartermaniae, commonly known as the limestone hedge-hyssop, is a species of flowering plant in the plantain family. It is native to eastern North America.

<i>Viola sagittata</i> Species of flowering plant

Viola sagittata, commonly called the arrowleaf violet, is a species of flowering plant in the violet family (Violaceae). It is native to the eastern North America in Canada and the United States, where it is widespread. It is found in a variety of natural habitats, but is most common in dry, open communities such as prairies, glades, or woodlands, often in sandy or rocky soil.

References

  1. "Flora of the Southern and Mid-Atlantic States".
  2. Baskin, Jerry; Baskin, Carol (1975). "Observations on the Ecology of the Cedar Glade Endemic Viola egglestonii". The American Midland Naturalist. 93. doi:10.2307/2424165. JSTOR   2424165.