Berchemiella

Berchemiella
Systematics
	Nuclear eudicotyledons
	Rosids
	Eurosiden I
Order :	Rose-like (rosales)
Family :	Buckthorn Family (Rhamnaceae)
Genre :	Berchemiella
Scientific name
	Berchemiella
	Nakai

Berchemiella is a genus from the family of the Buckthorn family (Rhamnaceae). It includes three species in China and Japan, all of which are threatened. The generic name honors Jacob Pierre Berthoud van Berchem (1763-1832), a (Dutch-) Swiss naturalist and mineralogist.

description

Berchemiella are evergreen shrubs or small trees. The hairless leaves are usually arranged alternately.

The flowers are in terminal or axillary fascicles or cymes . The permanent flower cup is bowl-shaped with a relatively thick disc that completely fills the flower cup . The ovary is semi-subordinate. The fruits are single-faceted stone fruits .

Distribution and systematics

The genus was first described by Takenoshin Nakai in 1923 . Within the buckthorn family , it is classified in the tribe Rhamneae . The Berchemiella comprise only three species plus one variety, native to Japan, China and Korea.

Berchemiella berchemiifolia Nakai
Berchemiella yunnanensis Y.L.Chen & PKChou
Berchemiella wilsonii (CKSchneid.) Nakai : With the varieties:
- Berchemiella wilsonii var. Pubipetiolata H.Qian
- Berchemiella wilsonii var. Wilsonii

All species of the genus are threatened by human activities, only five specimens of the nominate form of Berchemiella wilsonii var. Wilsonii are known, and only four notable occurrences of the pubipetiolata variety .

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 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 Ming Kang, Jinju Zhang, Jing Wang & Hongwen Huang: Isolation and characterization of microsatellite loci in the endangered tree Berchemiella wilsonii var. Pubipetiolata and cross-species amplification in closely related taxa In: Conservation Genetics, 2006, Vol. 7, Pp. 789-793

[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

[kangzhangwanghuang-3] Ming Kang, Jinju Zhang, Jing Wang & Hongwen Huang: Isolation and characterization of microsatellite loci in the endangered tree Berchemiella wilsonii var. Pubipetiolata and cross-species amplification in closely related taxa In: Conservation Genetics, 2006, Vol. 7, Pp. 789-793