Grubbia

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Grubbia
Systematics
Eudicotyledons
Nuclear eudicotyledons
Asterids
Order : Dogwood-like (Cornales)
Family : Grubbiaceae
Genre : Grubbia
Scientific name of the  family
Grubbiaceae
Final ex Meisn.
Scientific name of the  genus
Grubbia
PJBergius

Grubbia is the only genus of the family of Grubbiaceae within the order of the dogwood-like (Cornales). The areas of the three species are only in the Capensis .

description

Grubbia species are ericoid, small shrubs , they are xerophytes . The opposite leaves are simple, leathery and rolled up. Stipules are missing.

Many flowers are grouped together in heady or conical inflorescences . The hermaphroditic flowers are radial symmetry . There are only four bracts . There are eight (or twelve) fertile stamens . Two carpels an under constant ovary grown. The lonely fruits are grouped together to form a cone-shaped fruit cluster.

Systematics

The genus Grubbia was established in 1767 by Peter Jonas Bergius . The botanical genus name Grubbia honors the Swedish botanist Michael Grubb (1728-1808). Type species is Grubbia rosmarinifolia P.J.Bergius . Synonyms for Grubbia P.J.Bergius are: Ophira Burm. ex L. , Strobilocarpus Klotzsch . The Grubbiaceae family was established in 1841 by Stephan Ladislaus Endlicher in Carl Daniel Friedrich Meisner : Plantarum vascularium genera secundum ordines .... , 1, p. 323, 2, p. 239. The Grubbiaceae Endl family . ex Meisn. nom. cons. was previously included in the order Ericales and is now part of the Cornales .

There are three species in the genus Grubbia :

  • Grubbia rosmarinifolia P.J.Bergius : There are three subspecies:
    • Grubbia rosmarinifolia subsp. gracilis (TMSalter) Carlquist : It occurs in the Western Cape .
    • Grubbia rosmarinifolia subsp. hirsuta (E.Mey. ex DC.) Carlquist : It occurs in the Western Cape.
    • Grubbia rosmarinifolia subsp. rosmarinifolia : There are two varieties:
      • Grubbia rosmarinifolia subsp. rosmarinifolia var. pinifolia (Sond.) Carlquist : It occurs in the Western Cape.
      • Grubbia rosmarinifolia subsp. rosmarinifolia var. rosmarinifolia : It occurs in the Western and Eastern Cape .
  • Grubbia rourkei Carlquist : This rare species thrives on moist sandstone slopes only on the Kogelberg at higher altitudes in the Western Cape. Less than five sites are known, all of which are in a protected area.
  • Grubbia tomentosa (Thunb.) Harms : It occurs in the Western Cape.

swell

Individual evidence

  1. Grubbiaceae in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved February 2, 2015.
  2. Grubbiaceae at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 2, 2015.
  3. a b c d e f g h Species list for Grubbia in the Red List of South African Plants
  4. a b c d Rafaël Govaerts (Ed.): Grubbia. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved October 26, 2018.


further reading

  • Qiu-Yun (Jenny) Xiang, David T. Thomas, Qiao Ping Xiang: Resolving and dating the phylogeny of Cornales - Effects of taxon sampling, data partitions, and fossil calibrations. Molecular Phylogenetics and Evolution , Volume 59, Issue 1, 2011, pp. 123-138. doi : 10.1016 / j.ympev.2011.01.016