Boechera

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Boechera
Boechera stricta

Boechera stricta

Systematics
Rosids
Eurosiden II
Order : Cruciferous (Brassicales)
Family : Cruciferous vegetables (Brassicaceae)
Tribe : Boechereae
Genre : Boechera
Scientific name
Boechera
Á.Löve & D.Löve

Boechera is a genus of plants belonging tothe cruciferous family (Brassicaceae). The genus was named in honor of the Danish botanist Tyge Wittrock Böcher (1909–1983).

features

Boechera hoffmannii

Most types of the genus are perennial , herbaceous plants . If the leaves are hairy, they have branched trichomes .

Many small flowers stand together in elongated, racemose inflorescences . The four petals range in color from white to lavender to purple.

The genus was originally due to the combination of features "flattened parallel to the septum pods , branched trichomes and applied cotyledons" the genus Arabis ( Arabis associated), but due to a diploid non-number of sets of chromosomes from x = 7 spun as a separate genus. This classification was then supported by further morphological, cytological and molecular biological investigations.

Many species within the genus reproduce asexually via apomixis .

distribution

The species of the genus Boechera occur in North America and Greenland .

Boechera lyallii
Boechera perennans

species

According to the latest taxonomy according to Ihsan Al-Shehbaz and Michael Windham, the genus includes around 110 species . Here is a selection:

  • Boechera arcuata (Nutt.) Windham & Al-Shehbaz ; Home: southern and western California.
  • Boechera atrorubens (Suksd. Ex Greene) Windham & Al-Shehbaz : Home: Oregon and Washington.
  • Boechera breweri (S. Watson) Al-Shehbaz : It occurs in two varieties in Oregon and California.
  • Boechera canadensis (L.) Al-Shehbaz . It is alsonewly placed in the genus Borodinia as Borodinia canadensis (L.) PJ Alexander & Windham .
  • Boechera divaricarpa (A. Nelson) Á. Löve & D. Löve : It occurs from Alaska to California and Arizona.
  • Boechera fecunda (Rollins) thorn ; Home: USA (Montana).
  • Boechera fendleri (S. Watson) WA Weber : It occurs in the central and western United States.
  • Boechera hoffmannii (Munz) Al-Shehbaz : It only occurs on Santa Cruz Island in California.
  • Boechera holboellii (Hornem.) Á. Löve & D. Löve : It occurs from Greenland and Alaska to California and New Mexico.
  • Boechera koehleri (Howell) Al-Shehbaz : It occurs only in southwest Oregon and California.
  • Boechera missouriensis (Greene) Al-Shehbaz ; Home: USA. It is also placed as Borodinia missouriensis (Greene) PJ Alexander & Windham in the genus Borodinia .
  • Boechera pauciflora (Nutt.) Windham & Al-Shehbaz : It is found in British Columbia and the western United States.
  • Boechera perennans (S. Watson) WA Weber : It occurs in Colorado, Wyoming, New Mexico, Texas, Arizona, California, Utah, Nevada and Mexico (Baja Norte).
  • Boechera perstellata (EL Braun) Al-Shehbaz ; Home: Kentucky, Tennessee. It is also placed as Borodinia perstellata (EL Braun) PJ Alexander & Windham in the genus Borodinia .
  • Boechera platysperma (A. Gray) Al-Shehbaz ; Homeland: Oregon, California, Nevada.
  • Boechera puberula (Nutt.) Thorn ; Homeland: the western United States.
  • Boechera pusilla (Rollins) thorn ; Home: USA (Southwest Wyoming).
  • Boechera retrofracta (Graham) Á. Löve & D. Löve : It occurs from Alaska to Quebec and from Michigan to California.
  • Boechera rigidissima (Rollins) Al-Shehbaz ; Homeland: Northern California, Western Nevada.
  • Boechera shortii (Fernald) Al-Shehbaz : It occurs in southeastern Ontario and in the eastern and north-central United States.
  • Boechera sparsiflora (Nutt.) Thorn ; Homeland: Alberta, British Columbia and the western United States.
  • Boechera stricta (Graham) Al-Shehbaz ; Home: Canada and USA from Alaska to California and Delaware.

swell

literature

  • Al-Shehbaz, I .: Transfer of most North American species of Arabis to Boechera (Brassicaceae) . In: Novon . No. 13, 2003, pp. 381-391.

Individual evidence

  1. Lotte Burkhardt: Directory of eponymous plant names . Extended Edition. Botanic Garden and Botanical Museum Berlin, Free University Berlin Berlin 2018. [1]
  2. Á. Löve, D. Löve: Nomenclatural notes on arctic plants . In: Botanisker Notiser . No. 128, 1975, pp. 497-523.
  3. a b c d e f g h i j k l m n o p q r s t u Boechera in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved October 9, 2018.
  4. ^ Reed C. Rollins: The Cruciferae of Continental North America. Systematics of the Mustard Family from the Arctic to Panama. Stanford University Press. 1993

Web links

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