Flora of Oklahoma

Quercus buckleyi, commonly known as Texas red oak, Buckley's oak, or Spanish oak is a species of flowering plant. It is endemic to the southern Great Plains of the United States (Oklahoma and Texas). Buckley's oak is smaller and more likely to be multitrunked than its close relative, the Shumard oak (Q. shumardii). The two species are interfertile, and hybrids are common along a line from Dallas to San Antonio, Texas. Texas red oak usually is 30 to 50 feet (9.1 to 15.2 meters) tall at maturity, and seldom reaches a height of more than 75 feet (23 meters). Quercus buckleyi was formerly known

Amsonia hubrichtii, commonly known as Hubricht's bluestar, Arkansas bluestar, or thread-leaf bluestar, is a North American species of perennial flowering plant in the Apocynaceae (dogbane) family, first described in 1943. It is native to Oklahoma and Arkansas in the south-central United States. It is commonly used as an ornamental plant.

Amorpha ouachitensis is an uncommon North American species of flowering plant in the legume family known by the common names Ouachita leadplant, Ouachita Mountain leadplant, Ouachita false indigo, and Ouachita indigobush. It is native to Oklahoma and Arkansas in the United States. Amorpha ouachitensis is a shrub growing up to about 2 meters (80 inches) tall. The compound leaves are each made up of several oval leaflets. The inflorescence is made up of many flowers with purple petals and yellow anthers. Amorpha ouachitensis is native to the Ouachita Mountains. In Oklahoma it occurs in Le

Dysodiopsis tagetoides, commonly known as false dogfennel, is a species of flowering plant in the family Asteraceae. It is native to the United States, where it is restricted to Oklahoma and Texas. It is found in areas of calcareous soil. Dysodiopsis is a monotypic genus, and therefore contains no other species.

Carex perdentata, the Texas meadow sedge, is a species of flowering plant in the family Cyperaceae, native to the U.S. states of Oklahoma and Texas. A perennial of savannas and open mesic forests, it can be used as a grass substitute in lawns, but requires a great deal of water.

Vernonia lettermannii, the narrowleaf ironweed, is a plant species known only from Arkansas and Oklahoma. It grows on floodplains and terraces at elevations of 100–200 m (330–660 ft). Vernonia lettermannii is a perennial herb up to 60 cm (24 in) tall. Leaves are filiform (thread-shaped), up to 9 cm (3.5 in) long but less than 3 mm (0.12 in) wide. Flower heads are purple, arranged as a corymb.

Solidago ouachitensis is a North American species of flowering plants in the family Asteraceae known by the common name Ouachita Mountain goldenrod. It has a very limited range, found only in the Ouachita Mountains along the border between Arkansas and Oklahoma in the United States. Solidago ouachitensis is a perennial herb growing up to about 1.1 meters (44 inches) in height. It produces one or more erect stems from a woody caudex. The serrated (toothed) leaves are 10 to 13 centimeters (4.0-5.2 inches) long around the middle of the plant and smaller higher on the stem. One plant will produce

Polytaenia texana, commonly known as Texas prairie parsley, is a species of flowering plant in the carrot family (Apiaceae). It is native to Texas and Oklahoma in the United States.

Oenothera suffulta, known as roadside gaura, honeysuckle gaura, or kisses, is a flowering plant in the primrose family, Onagraceae. It is endemic to the United States, in Texas (excluding the Trans-Pecos) and southern Oklahoma.

Houstonia ouachitana, the Ouachita bluet, is a species of plants in the coffee family. It is endemic to the Ouachita Mountains of Arkansas and Oklahoma. It is an herb up to 20 cm tall, with lanceolate basal leaves and narrowly linear cauline leaves.

Hedeoma reverchonii, commonly called Reverchon's false pennyroyal, is a species of flowering plant in the mint family (Lamiaceae). It is native to the south central region of the United States, where it is primarily found in Texas, extending into small areas of Arkansas and Oklahoma. Its natural habitat is on open, calcareous rock outcrops. Hedeoma reverchonii is a robust perennial with a woody base. It produces white or lavender colored flowers in the summer. The crushed plant has an odor of camphor or lemon. This trait helps distinguish Hedeoma reverchonii from the similar-looking Hedeoma

Frasera coloradensis is a species of flowering plant in the gentian family known by the common name Colorado green gentian. It is endemic to Colorado in the United States, where it is limited to the southeastern corner of the state.

Xanthisma texanum (common names the Texas sleepydaisy, star-of-Texas, and Drummond's sleepy-daisy) is an ornamental plant native to the United States. This plant is usually propagated by seeds.

Vitis × doaniana (Doan's grape) is a hybrid grape resulting from the natural hybridization of Vitis mustangensis with Vitis acerifolia. Its native range is the U.S. states of Oklahoma, Colorado, Texas, and New Mexico.

Liatris aestivalis, also known as the summer gayfeather, is a plant species in the family Asteraceae and genus Liatris. The specific epithet, aestivalis, is derived from Latin and means "pertaining to the summer".

Desmodium tweedyi is an herbaceous flowering plant in the pea family native to northern Texas and southern Oklahoma popularly known as "Tweedy's ticktrefoil" or "tick-clover." The legume or seed pod it produces has given the species its common names from its ability to cling to clothing. Along with other species in the Desmodium genus, D. tweedyi has become a candidate for soil enrichment, suppression of insect pests, mulch and green manure production, and making "good fodder for animals including bobwhite, turkey, grouse, deer, cattle and goats."

Streptanthus squamiformis is a species of flowering plant in the mustard family known by the common names pine-oak jewelflower or Goodman's jewelflower. It is a narrow endemic to Oklahoma and Arkansas.

Micranthes palmeri, commonly called Palmer's saxifrage, is a species of plant in the saxifrage family that is native to Oklahoma and Arkansas in the United States.

Erigeron geiseri is a North American species of flowering plants in the family Asteraceae known by the common name Geiser's fleabane. Erigeron geiseri has been found only in the southern part of the Great Plains of the United States, in the states of Oklahoma and Texas. It grows on prairies, fields, fencerows and roadsides. Erigeron geiseri grows up to 40 cm (16 inches) tall, and produces a slender taproot. The plant sometimes produces as many as 20 flower heads per stem, each head containing golden yellow disc florets surrounded by as many as 70 white ray florets.

Aphanostephus pilosus, the hairy lazydaisy, is an annual herbaceous flowering plant in the family Asteraceae. It is found in the United States (New Mexico, Oklahoma, northern Texas).

Spiranthes niklasii, also known by the common name Niklas' ladies' tresses, is a terrestrial orchid nearly endemic to the Ouachita Mountains in Arkansas and Oklahoma with a few other known populations.

Solidago altiplanities, the high plains goldenrod, is a plant species native to the high-altitude plains of Oklahoma and the Texas Panhandle, often found on ridges and escarpments. Solidago altiplanities is an herb up to 1 m (39 inches) tall, spreading by underground rhizomes. One plant can produce as many as 350 small yellow flower heads in a broad, conical array.

Maclura pomifera, commonly known as the Osage orange ( OH-sayj), is a small deciduous tree or large shrub, native to the south-central United States. It is a member of the mulberry family, Moraceae. It typically grows about 8 to 15 m (30–50 ft) tall. The distinctive multiple fruit resembles an immature orange, is roughly spherical, bumpy, 8 to 15 cm (3–6 in) in diameter, and turns bright yellow-green in the fall. The fruit excretes a sticky white latex when cut or damaged. Despite the name "Osage orange", it is not related to the orange. Due to its latex secretions and woody pulp, the fruit

Quercus havardii (common names include shinnery oak, shin oak and Havard oak) is a deciduous, low-growing, thicket-forming shrub that occupies some two million to three million hectares (7,700 to 11,600 square miles) in the southern Great Plains of North America. Clones may reach hundreds to thousands of years old, although aboveground stems typically live only 11 to 15 years. Shinnery oak stems are usually 1 to 2 metres (3 feet 3 inches to 6 feet 7 inches) tall and codominate the plant community with mid- and tall-grasses, which are usually taller than the oaks. The specific epithet honors

Quercus fusiformis (also often referred to as Q. virginiana var. fusiformis), commonly known as escarpment live oak, plateau live oak, plateau oak, or Texas live oak, is an evergreen or nearly evergreen tree. Its native range includes the Quartz Mountains and Wichita Mountains in southwestern Oklahoma, through Texas (approximately from the Brazos River west up to the Pecos River and the southern Llano Estacado), to the Mexican states of Coahuila, Tamaulipas, and Nuevo León. Quercus fusiformis is an evergreen tree in the southern live oaks section of the genus Quercus (section Virentes). It is

Lindheimera is a genus of flowering plants in the tribe Heliantheae within the family Asteraceae found in North America. The genus is named for German-American botanist Ferdinand Lindheimer, 1801–1879.

Nolina greenei, woodland beargrass, is a plant species native to the United States. It is widespread in New Mexico and also reported from Colorado (Las Animas County), Texas (Deaf Smith and Garza Counties) and Oklahoma (Cimarron County). Nolina greenei grows in rocky locations such as limestone outcrops and old lava flows, often in grasslands or in pine-oak woodlands at elevations of 1200–2000 m. It is a perennial rosette forming plant with an underground caudex. Leaves are long and narrow, sometimes over 100 cm long but rarely more than 1 cm wide. They sometimes have sharp teeth along the

Yucca neomexicana Wooton & Standl. is a plant in the family Asparagaceae, native to New Mexico, Colorado and Oklahoma. Common name is "New Mexican Spanish bayonet." It is similar to Y. harrimaniae Trel. but with a longer flowering stalk and white (rather than yellowish) flowers.

Hamamelis vernalis, the Ozark witchhazel (or witch-hazel) is a species of flowering plant in the witch-hazel family Hamamelidaceae, native to the Ozark Plateau in central North America, in Missouri, Oklahoma, and Arkansas. It is a large deciduous shrub growing to 4 m (13 ft) tall.

Androstephium coeruleum, commonly called blue funnel-lily, is a herbaceous perennial growing from corms. It has light blue to violet purple flowers and grows up to 35 cm tall. It is found growing in prairies and on grassy slopes in its native range within Texas, Oklahoma and Kansas of the United States. It disperses its seed by wind.