Bartonia

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Bartonia
Bartonia virginica, illustration

Bartonia virginica , illustration

Systematics
Euasterids I
Order : Enzianartige (Gentianales)
Family : Gentian Family (Gentianaceae)
Tribe : Gentianeae
Sub tribus : Swertiinae
Genre : Bartonia
Scientific name
Bartonia
Mill. ex Willd.

Bartonia is a genus of plants in the gentian family (Gentianaceae). The only three species arenativeto North America .

description

Blossom of Bartonia verna

The species Bartonia species grow as annual to biennial herbaceous plants . The leaves are reduced to paired, small, tight-fitting scales.

The radial symmetrical flowers are fourfold. There are four green sepals and four petals . A small, single-chamber capsule fruit is formed.

distribution

The Bartonia species are native to eastern to southern North America . While the distribution area of ​​the two species Bartonia paniculata and Bartonia virginica extends over large parts of eastern North America, the occurrence of Bartonia verna in the eastern southern states and that of Bartonia paniculata subsp. texana even limited to Texas .

Systematics

The genus Bartonia was set up in 1801 by the American botanist Gotthilf Henry Ernest Muhlenberg in Carl Ludwig Willdenow : The Society of Friends of Natural Sciences in Berlin, new writings , 3, pp. 444–445. The botanical genus name Bartonia honors the American botanist Benjamin Smith Barton (1766–1815).

In the genus Bartonia Muhl. ex Willd. nom. cons. are three types of which one has three subspecies:

  • Bartonia paniculata (Michx.) Muhl. , Syn .: Centaurella paniculata Michx. : There are three subspecies:
    • Bartonia paniculata (Michx.) Muhl. subsp. paniculata
    • Bartonia paniculata subsp. iodandra (BLRobins.) J. Gillett
    • Bartonia paniculata subsp. texana (Correll) KG Mathews, Dunne, E. York & Struwe , Syn .: Bartonia texana Correll
  • Bartonia verna (Michx.) Raf. ex Barton
  • Bartonia virginica (L.) Britton, Sterns & Poggenb.

The generic name Bartonia was derived from the description of Bartonia Pursh ex Sims in Bot. Mag. , 36, 1812, t. Awarded again in 1487 by the German-Canadian botanist Frederick Traugott Pursh for a genus from the nettle family (Loasaceae). Since this description was published later, it represents a younger homonym according to the ICBN (Vienna Code, Article 53) , which may not be used ( noun illegitimum ). The plant species falling under this description are placed in the genus Mentzelia .

swell

  • Katherine G. Mathews, Niall Dunne, Emily York, Lena Struwe: A phylogenetic analysis and taxonomic revision of Bartonia (Gentianaceae): Gentianeae, based on molecular and morphological evidence. In: Systematic Botany , Volume 34, Issue 1, 2009, pp. 162-172.

Individual evidence

  1. ↑ Bartonia in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
  2. ↑ Bartonia in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.

Web links

Commons : Bartonia  - collection of images, videos and audio files