Tenon head

Tenon head
	Cone head ( Rhaponticum coniferum )
Systematics
Family :	Daisy family (Asteraceae)
Subfamily :	Carduoideae
Tribe :	Cynareae
Sub tribus :	Centaureinae
Genre :	Bergscharten ( Rhaponticum )
Type :	Tenon head
Scientific name
	Rhaponticum coniferum
	( L. ) Greuter

Cone head ( Rhaponticum coniferum )

Rhaponticum coniferum , infructescence and achenes

The tap head ( Rhaponticum coniferum , Syn. : Leuzea conifera ( L. ) . DC , Centaurea conifera L.) is a plant from the genus RHAPONTICUM ( Rhaponticum ) in the family of Compositae (Asteraceae).

features

The cone head is an evergreen, perennial herbaceous plant that reaches stature heights of 5 to 30, rarely up to 40 centimeters. The spider-weby, tomentose hairy plant is stemless or the stem is less than 40 centimeters long. The upper side of the leaf is greenish, the underside of the leaf white. The lower leaves are lanceolate , undivided or pinnately split , 3 to 15 inches long and 0.7 to 2 inches wide.

The cup-shaped inflorescences are individually terminal on the stems. The egg-shaped inflorescence envelope has a length of 3 to 5 centimeters and a diameter of 2.5 to 4 centimeters. On the bracts there is a membranous, rounded, slit appendage. The pappus rays are pinnate.

The flowering period extends from June to July.

The number of chromosomes is 2n = 18, 22 or 26.

Occurrence

The cone head occurs in the western and central Mediterranean area in rock bushes at altitudes from 0 to 1600 meters. It is mostly found on silicate rock.

Systematics

The tenon head includes the following subspecies:

Rhaponticum coniferum (L.) Greuter subsp. coniferum : It occurs in Portugal, Spain, Andorra, France, Corsica, Italy, Sardinia, Sicily, the Balearic Islands, Morocco, Algeria and Tunisia.
Rhaponticum coniferum subsp. berardioides (Batt.) Greuter (Syn .: Leuzea berardioides Batt. , Leuzea font-queri Sauvage , Rhaponticum font-queri (Sauvage) Hidalgo ): It occurs only in Morocco.

use

The cone head is rarely used as an ornamental plant in rock gardens.

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 Academic Publishing House, Berlin Heidelberg 2008, ISBN 978-3-8274-0918-8 .

Individual evidence

↑ Rhaponticum coniferum in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
^ Tropicos. [1]
↑ ^a ^b ^c Werner Greuter (2006+): Compositae (pro parte majore). - In: W. Greuter & E. von Raab-Straube (ed.): Compositae. Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity. Datasheet Rhaponticum coniferum In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.

Web links

Commons : Cone Head ( Rhaponticum coniferum ) - Collection of images, videos and audio files

[1] Rhaponticum coniferum in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.

[Tropicos-2] Tropicos. [1]

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