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Zeltnera muehlenbergii is a species of annual herb commonly known as Monterey centaury and Muhlenberg's centaury. It is native to western North America from British Columbia to California and Nevada, where it commonly grows in forests and other moist places. This is an annual herb growing thin, erect, branching stems to heights anywhere between 10 centimeters and one meter. Oval-shaped leaves are arranged oppositely on the stem and are up to 2 or 3 centimeters long. The branching inflorescence bears many flowers, each with small bracts at its base. The flower has five oval-shaped petallike

Schenkia spicata is a species of annual herb in the family Gentianaceae. It has a very wide Old World distribution, ranging from north Africa, through Europe and into Asia. It was first published as Gentiana spicata by Carl Linnaeus in his 1753 Species plantarum. It was later transferred into Erythraea and then Centaurium, under a broad circumscription of the latter genus that was subsequently found to be polyphyletic. In 2004 Centaurium was split into four genera, with C. spicatum becoming Schenkia spicata. At the same time, it was noted that European and Australian specimens ascribed to

Zeltnera venusta is a species of flowering plant in the gentian family known by the common names California centaury, charming centaury and canchalagua. This centaury is native to much of California, southern Oregon, and northwest Baja California. It grows in many habitats up to elevations around 1300 meters. It is an annual wildflower rarely reaching half a meter in height. The pointed oval leaves grow opposite on the thin stems. The inflorescence is tipped with one or more showy star-shaped flowers, each with a white-centered magenta corolla about 2 centimeters wide. Until 2004, it was

Zeltnera exaltata is a species of flowering plant in the gentian family known by the common names desert centaury and tall centaury. It is native to much of western North America from British Columbia to Arizona to Nebraska, where it grows in moist areas, generally with alkaline soils. This is an annual herb which is variable in appearance, especially in different habitat types. It grows up to about 35 centimeters in height, its slender stem with widely spaced pairs of oppositely arranged, pointed leaves 1 to 3 centimeters long. The inflorescence is an open array of flowers, each on a pedicel

Zeltnera davyi is a species of flowering plant in the gentian family known by the common name Davy's centaury.

Zeltnera calycosa is a species of flowering plant in the gentian family known by the common name Arizona centaury. It is native to northern Mexico and the southwestern United States, where it grows in moist places in otherwise dry habitat, such as riverbanks. This is an erect biennial herb growing up to half a meter tall. The widely lance-shaped leaves appear in a basal rosette and along the slender stem, each up to 7 centimeters long. The inflorescence is an open array of flowers on short pedicels. Each flower opens into five pointed lobes, each about a centimeter long and dark rose pink in

Schenkia australis is a species of annual herb in the Gentianaceae family. It is endemic to Australia.

Zeltnera beyrichii, commonly known as mountain pink, quinine weed or rock centaury, is an annual plant in the New World that blooms from late spring to early fall. Used as a medicinal plant by pioneers, the flowers were dried and used to reduce fevers. Until 2004 it was known as Centaurium beyrichii.

Zeltnera is a genus of flowering plants in the gentian family. It was erected in 2004 when the genus Centaurium (the centauries) was split. Genetic analysis revealed that Centaurium was polyphyletic, made up of plants that could be grouped into four clades. Each became a genus. Centaurium remained, but it is now limited to the Eurasian species. The Mexican species now belong to genus Gyrandra, and the Mediterranean and Australian plants are in genus Schenkia. The new name Zeltnera was given to this genus, which contains most of the North American centauries. There are about 25 species. Plants

Zeltnera trichantha is a species of flowering plant in the family Gentianaceae. It is referred to by the common name alkali centaury. It is endemic to northern California.

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Zeltnera namatophila, the spring-loving centaury, is a rare species of flowering plant in the gentian family. It is endemic to the Amargosa Valley, in Nye County, southwestern Nevada.

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