Karvinskia

Karvinskia
	Karwinskia humboldtiana , illustration
Systematics
	Nuclear eudicotyledons
	Rosids
	Eurosiden I
Order :	Rose-like (rosales)
Family :	Buckthorn Family (Rhamnaceae)
Genre :	Karvinskia
Scientific name
	Karvinskia
	Zucc.

Karwinskia is a genus from the family of the Buckthorn family (Rhamnaceae). It includes around 15 species in North and South America and the Caribbean. It is named after Wilhelm Friedrich von Karwinsky von Karwin (1780–1855), an (Austro-Hungarian) German geologist and botanist.

description

Karwinskia are evergreen shrubs or small trees, the often glandular leaves of which are arranged opposite one another.

The flowers are stalked, axillary umbel-like cymes or as single flowers. The during the flower cup is cup-shaped to hemispherical, the discus that is fused with the flower cup is thin. The ovary is upper constant and incomplete zweifächrig, each compartment there are two ovules . The fruits are stone fruits with a stone core and one to three seeds.

Distribution and systematics

The genus was first described in 1832. The Karwinskia comprise around fifteen species in southern North and northern South America and the Caribbean. Within the buckthorn family , it is classified in the tribe Rhamneae . The types include:

Karwinskia calderonii Standl. : It occurs in Mexico, El Salvador, Guatemala and Nicaragua.
Karwinskia humboldtiana (Schult.) Zucc. : It occurs in Mexico and Texas.
Karwinskia johnstonii R. Fernandez : It occurs in the Mexican states of Guerrero and Michoacán .
Karwinskia latifolia Standl. : It occurs in Mexico.
Karwinskia mollis Schltdl. : It occurs in Mexico.
Karwinskia parvifolia Rose : It occurs in the Mexican states of Sinaloa and Sonora .
Karwinskia rzedowskii R. Fernandez : It occurs in the Mexican states of Zacatecas , Durango and Jalisco .
Karwinskia subcordata Schltdl. : It occurs in southern Mexico.
Karwinskia umbellata (Cav.) Schltdl. : It occurs in southern Mexico.

proof

↑ Lotte Burkhardt: Directory of eponymous plant names . Botanic Garden and Botanical Museum Berlin, Free University Berlin Berlin 2016. ISBN 978-3-946292-10-4 , doi : 10.3372 / epolist2016
↑ ^a ^b ^c D. Medan, C. Schirarend: Rhamnaceae In: Klaus Kubitzki (Ed.): The Families and Genera of Vascular Plants - Volume VI - Flowering Plants - Dicotyledons - Celastrales, Oxalidales, Rosales, Cornales, Ericales , 2004, P. 333, ISBN 978-3-540-06512-8
↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Karwinskia in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved April 27, 2017.

Web links

Commons : Karwinskia - collection of pictures, videos and audio files

[Burkhardt2016-1] Lotte Burkhardt: Directory of eponymous plant names . Botanic Garden and Botanical Museum Berlin, Free University Berlin Berlin 2016. ISBN 978-3-946292-10-4 , doi : 10.3372 / epolist2016

[kub-2] D. Medan, C. Schirarend: Rhamnaceae In: Klaus Kubitzki (Ed.): The Families and Genera of Vascular Plants - Volume VI - Flowering Plants - Dicotyledons - Celastrales, Oxalidales, Rosales, Cornales, Ericales , 2004, P. 333, ISBN 978-3-540-06512-8

[GRIN-3] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Karwinskia in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved April 27, 2017.