Rio Grande two-tooth

Rio Grande two-tooth
	Rio Grande two-toothed tooth ( Bidens subalternans )
Systematics
Order :	Astern-like (Asterales)
Family :	Daisy family (Asteraceae)
Subfamily :	Asteroideae
Tribe :	Coreopsideae
Genre :	Two teeth ( bidens )
Type :	Rio Grande two-tooth
Scientific name
	Bidens subalternans
	DC.

Bidens subalternans

The Rio Grande bizarre is a species of bizarre ( Bidens ) in the sunflower family (Asteraceae).

features

The Rio Grande two-toothed tooth is an annual plant that reaches heights of 40 to 70 centimeters. At least the lower leaves are pinnate, with stalked leaflets, these are incised almost to the midrib and more or less strongly serrated. The end section is lanceolate to linear and pointed, the lateral sections are narrower. The stem is square. The few heads are terminal and 8 to 10 millimeters wide. The 8 outer bracts are linear, ciliate and 4 to 6 millimeters long. The rays are whitish, rudimentary or absent.

Flowering time is probably from July to October.

The number of chromosomes is 2n = 48.

Occurrence

The Rio Grande two-tooth is originally found in Colombia , Ecuador , Bolivia , Peru , Brazil , Paraguay , Uruguay and Argentina , Chile and in Cuba . It is naturalized in Spain, France, Italy and Switzerland.

use

The Rio Grande two-toothed tooth is rarely used as an ornamental plant in borders and pots.

literature

Eckehart J. Jäger, Friedrich Ebel, Peter Hanelt, Gerd K. Müller (eds.): Rothmaler excursion flora from Germany. Volume 5: Herbaceous ornamental and useful plants. Spectrum, Akademischer Verlag, Heidelberg 2008, ISBN 978-3-8274-0918-8 .

Individual evidence

^ Bidens subalternans at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
^ Bidens in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved March 13, 2018.
↑ Werner Greuter (2006+): Compositae (pro parte majore). - In: W. Greuter & E. von Raab-Straube (eds.): Compositae. Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. Datasheet Bidens subalternans In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.

Web links

Commons : Rio Grande Two Teeth ( Bidens subalternans ) - Collection of images, videos and audio files

[IPCN-1] Bidens subalternans at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis

[GRIN-2] Bidens in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved March 13, 2018.

[Euro+Med-3] Werner Greuter (2006+): Compositae (pro parte majore). - In: W. Greuter & E. von Raab-Straube (eds.): Compositae. Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. Datasheet Bidens subalternans In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.