Pillowia

Pillowia
	Pillowia capensis
Systematics
	Nuclear eudicotyledons
	Asterids
Order :	Dogwood-like (Cornales)
Family :	Nettle family (Loasaceae)
Subfamily :	Loasoideae
Genre :	Pillowia
Scientific name
	Pillowia
	Final

Issenia is a genus of plants withinthe nettle family (Loasaceae). It contains only two species found in southwest and northeast Africa and the Arabian Peninsula.

description

Vegetative characteristics

In Kissenia TYPES is upright, densely branched shrubs . A strong, fleshy taproot is formed. Nettle hair is missing.

The lower leaves are opposite, the upper alternate. The leaves are divided into a petiole and a leaf blade. The simple leaf blades are egg-shaped to kidney-shaped with a length of up to 40 centimeters, slightly lobed and furrowed on the edge.

Generative characteristics

The numerous flowers are in terminal inflorescences that are dichasia or thyrsenic-like , with one to three Parakladien . Under each of the upright flowers are two small, simple bracts .

The hermaphroditic flowers are radial symmetry and five-fold with a double flower envelope . The five long-lasting sepals are significantly longer than the petals and enlarge significantly until the fruit is ripe and crown the fruit. The five petals are cream-colored. The outer staminodes are fused and form an elongated, yellowish scale sheet ( nectar scale ). The ovary is approximately inferior, the placenta is greatly reduced, making only a few ovules from.

The irregularly egg-shaped capsule fruits do not open and contain only one or two seeds.

The number of chromosomes is 2n = 24.

Occurrence

The two species thrive in rocky and sandy deserts. One of them occurs in northeastern Africa and on the Arabian Peninsula. The other species occurs in southern Africa.

Systematics

The genus pillowia was created in 1842 by Stephan Friedrich Ladislaus Endlicher in Gen. pl. suppl. Page 76 set . A synonym forissenia Endl. is Fissenia R.Br. ex Endl. orth. var.

The genus Kissenia belongs to the tribe Loaseae in the subfamily Loasoideae within the family Loasaceae .

There are only two species in the genus pillowia :

Pillowia capensis Endl. : It occurs in Namibia and South Africa .
Pillowia arabica R.Br. ex Chiov. : It occurs in Ethiopia , Eritrea and Djibouti as well as in Yemen .

swell

literature

Maximilian Weigend: Loasaceae. In: Klaus Kubitzki (Ed.): The Families and Genera of Vascular Plants . Volume 6: Flowering Plants, Dicotyledons: Celastrales, Oxalidales, Rosales, Cornales, Ericales . Springer, Berlin / Heidelberg / New York 2004, ISBN 3-540-06512-1 , pp. 248 (English, limited preview in Google Book search).
Maximilian Weigend: Familial and generic classification , online at the FU Berlin , accessed on July 19, 2008

Individual evidence

↑ ^a ^b Maximilian Weigend: Familial and generic classification , online at the FU Berlin , accessed on July 19, 2008
↑ ^a ^b ^c Kissenia in the Germplasm Resources Information Network (GRIN) USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved September 26, 2017.

Web links

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

Pillowia at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed September 26, 2017.

[FUberlin-1] Maximilian Weigend: Familial and generic classification , online at the FU Berlin , accessed on July 19, 2008

[GRIN-2] Kissenia in the Germplasm Resources Information Network (GRIN) USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved September 26, 2017.