Berchemia

Berchemia
	Berchemia racemos
Systematics
	Nuclear eudicotyledons
	Rosids
	Eurosiden I
Order :	Rose-like (rosales)
Family :	Buckthorn Family (Rhamnaceae)
Genre :	Berchemia
Scientific name
	Berchemia
	Neck. ex DC.

Berchemia is a plant genus in the family of the cross thorn plants (Rhamnaceae). The 20 or so species are mostly found in Southeast Asia.

description

Illustration from The botany of Captain Beechey's voyage; Comprising an acount of the plants collected by Messrs. Lay and Collie, and other officers of the expedition, during the voyage to the Pacific and Behring's von Berchemia lineata

Vegetative characteristics

Berchemia species are evergreen or deciduous, upright or climbing shrubs or small trees . The above-ground parts of the plant are bare. There may be thorns .

The mostly alternate leaves are stalked to almost sessile. The simple leaf blades are more or less entire. The leaf veins are almost parallel. The mostly durable stipules are sub-like and fused together at their base.

Generative characteristics

The flowers are in pendent ährigen , rispigen inflorescences or thyrsi from stalked to sessile, few-flowered and umbel-like cymes together.

The flowers can be hermaphroditic or functionally unisex. The flower cup (hypanthium) is bowl-shaped to hemispherical with a fleshy disc that completely fills the flower cup . The relatively small flowers are radial symmetry and five or six-fold with a double flower envelope . The five or six petals are obovate. The stamens rise above the corolla. Two carpels are an upper continuous, two-chambered ovary adherent, which is narrowed egg-shaped and upwardly. The thick disc surrounds the ovary, but is not attached to it. The stylus has two branches.

The cylindrical or ovoid drupes are hard. The woody stone core is twofold.

Distribution and systematics

The genus Berchemia was established in 1825 by Noël Martin Joseph de Necker in Augustin Pyramus de Candolle : Prodromus Systematis Naturalis Regni Vegetabilis , 2, pages 22-23. Type species is Berchemia volubilis (L. f.) DC. The generic name Berchemia honors Jacob Pierre Berthoud van Berchem (1763-1832), a (Dutch-) Swiss naturalist and mineralogist.

The genus Berchemia belongs to the tribe Rhamneae within the family Rhamnaceae .

The genus Berchemia includes around twenty species, one each in New Caledonia and North America, all other species are common in Southeast Asia.

The types include:

Berchemia edgeworthii M.A. Lawson : It occurs in Afghanistan , Pakistan , India , Nepal , Bhutan and China .
Berchemia floribunda (Wall.) Brongn. : It occurs in Pakistan, India, Nepal, Bhutan, Thailand , Vietnam and China.
Berchemia lineata (L.) DC. : It occurs in Vietnam, China, Taiwan and Japan .
Berchemia magna (Makino) Koidz. (Syn .: Berchemia racemosa Siebold & Zucc. Var. Magna Makino ): It occurs in Japan.
Berchemia pakistanica Browicz
Berchemia polyphylla Wall. ex MALawson : It occurs in three varieties in Myanmar and China.
Berchemia racemosa Siebold & Zucc. : It occurs on the Japanese islands of Hokkaido , Honshu , Kyushu , Shikoku and on the Ryūkyū Islands .
Berchemia scandens (Hill) K. Koch : It occurs in the United States, Mexico and Guatemala .
Berchemia volubilis (L. f.) DC.
Berchemia zeyheri (Sond.) Grubov : It occurs in Mozambique , Zimbabwe and in southern Africa.

proof

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q Berchemia at Tropicos.org. Missouri Botanical Garden, St. Louis.
↑ ^a ^b ^c ^d 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, ISBN 978-3-540-06512-8 , p. 333.
↑ ^a ^b ^c PA Schmidt, B. Schulz (Ed.): Wood flora. founded by Jost Fitschen. 13th edition. Quelle & Meyer, Wiebelsheim 2017, ISBN 978-3-494-01712-9 , p. 400 .
↑ Berchemia at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 19, 2018.
↑ 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 ^e ^f ^g ^h Berchemia 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 : Berchemia - collection of images, videos and audio files

Berchemia at Tropicos.org. Missouri Botanical Garden, St. Louis.

[FoPakistan-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q Berchemia at Tropicos.org. Missouri Botanical Garden, St. Louis.

[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, ISBN 978-3-540-06512-8 , p. 333.

[Fitschen2017-3] PA Schmidt, B. Schulz (Ed.): Wood flora. founded by Jost Fitschen. 13th edition. Quelle & Meyer, Wiebelsheim 2017, ISBN 978-3-494-01712-9 , p. 400 .

[Tropicos-4] Berchemia at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 19, 2018.

[Burkhardt2016-5] 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

[GRIN-6] ↑ ^a ^b ^c ^d ^e ^f ^g ^h Berchemia in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved April 27, 2017.