Snake root (genus)

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Snake root
Rauvolfia tetraphylla

Rauvolfia tetraphylla

Systematics
Euasterids I
Order : Enzianartige (Gentianales)
Family : Dog poison family (Apocynaceae)
Subfamily : Rauvolfioideae
Tribe : Vinceae
Genre : Snake root
Scientific name
Rauvolfia
L.

Snake root ( Rauvolfia ) is a genus of plants within the dog venom family (Apocynaceae). German-language common names are Teufelspfeffer or snake root .

description

Illustration from Flore médicale des Antilles, ou, Traité des plantes usuelles , plate 184 by Rauvolfia tetraphylla

Vegetative characteristics

The serpentine species are evergreen shrubs or trees . The plants contain milky sap . The stalked leaves are shiny and are usually whorled on the branches.

Generative characteristics

The hermaphrodite flowers are radially symmetrical and usually five-fold with a double flower envelope . The overgrown sepals are deeply divided. The overgrown petals are white, yellow, green or pink, sometimes the corolla tube is red. The corolla lobes overlap to the left. There is only one stamen circle ; the stamens are very short. The ovary is on top.

There are drupes formed containing a seed.

Systematics

Rauvolfia nukuhivensis inflorescence
Leaves and fruits of Rauvolfia polyphylla
Leaves and flowers of Rauvolfia serpentina

Taxonomy

The genus Rauvolfia was established by Carl von Linné in 1753/4 . Synonyms for Rauvolfia L. are: Rauwolfia L. , orth. Var., Cyrtosiphonia Miq. , Dissolena Lour. , Heurckia garbage. Arg. , Ophioxylon L. , Podochrosia Baill. The generic name Rauvolfia honors, since it was named by the French Charles Plumier (1646–1704), the Augsburg doctor and botanist Leonhard Rauwolf (1540–1596).

External system

The genus Rauvolfia belongs to the tribe Vinceae in the subfamily Rauvolfioideae within the family Apocynaceae .

The following cladogram shows the probable relationships according to Endress & Bruyns 2000, the tribe Vinceae, which in 2016 contains around nine genera with around 153 species:




Willughbeieae


   

Tabernaemontaneae



  Vinceae  

Kopsia flower nom. cons.


   

Tonduzia Pittier


   

Vinca L. (Syn .: Pervinca Mill. )


   

Ochrosia Juss. (Syn .: Ochrosion St.-Lag. Orth. Var., Bleekeria Hassk. , Calpicarpum G.Don , Diderota Comm. Ex A.DC. , Excavatia Markgr. , Lactaria Rumph. Ex Raf. , Neisosperma Raf. , Pseudochrosia Blume )



   


Catharanthus G.Don (Syn .: Ammocallis Small , Lochnera Rchb. Ex Endl. Nom. Illeg.)


   

Kamettia Kostel.



   

Rauvolfia



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Species and their distribution

The Rauvolfia species have areas in Africa , Asia or in the New World .

There are about 74 species in the genus Rauvolfia :

swell

  • Hendrian & David J. Middleton: Revision of Rauvolfia (Apocynaceae) in Malesia. In: Blumea , Volume 44, 1999, pp. 449-470.
  • Bingtao Li, Antony JM Leeuwenberg, David J. Middleton: Apocynaceae. In: Wu Zheng-yi, Peter H. Raven (Ed.): Flora of China. Volume 16: Gentianaceae through Boraginaceae , Science Press and Missouri Botanical Garden Press, Beijing and St. Louis 1995, ISBN 0-915279-33-9 .: Rauvolfia Linnaeus , pp. 157-159 - the same text online as the printed work.

Individual evidence

  1. ^ A b Rauvolfia in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved March 28, 2020.
  2. a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc bd be bf bg bh bi bj bk bl bm bn bo bp bq br bs bt bu bv bw bx Rafaël Govaerts (Ed.): Rauvolfia. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved March 28, 2020.
  3. ^ Wolf-Dieter Müller-Jahncke : Rauwolfia. In: Werner E. Gerabek , Bernhard D. Haage, Gundolf Keil , Wolfgang Wegner (eds.): Enzyklopädie Medizingeschichte. De Gruyter, Berlin and New York 2005, ISBN 3-11-015714-4 , p. 1216.
  4. Lotte Burkhardt: Directory of eponymous plant names . Extended Edition. Botanic Garden and Botanical Museum Berlin, Free University Berlin Berlin 2018. online.
  5. ^ André O. Simões, Luiza S. Kinoshita, Ingrid Koch, Márcio J. Silva, Mary E. Endress : Systematics and Character Evolution of Vinceae (Apocynaceae). In: Taxon , Volume 65, Issue 1, 2016, pp. 99–122. doi : 10.2307 / taxon.65.1.99 JSTOR taxon.65.1.99 full text PDF.

Web links

Commons : Snake Root ( Rauvolfia )  - Collection of images, videos and audio files