Clusius yarrow

Clusius yarrow
	Clusius yarrow ( Achillea clusiana )
Systematics
Order :	Astern-like (Asterales)
Family :	Daisy family (Asteraceae)
Subfamily :	Asteroideae
Tribe :	Anthemideae
Genre :	Yarrow ( Achillea )
Type :	Clusius yarrow
Scientific name
	Achillea clusiana
	exchange

The Clusius yarrow ( Achillea clusiana ) is a species of yarrow ( Achillea ) within the sunflower family (Asteraceae). The name honors the Dutch botanist Charles de l'Écluse (called "Carolus Clusius" in Latin).

The Clusius yarrow used to be a subspecies of the black-rimmed yarrow ( Achillea atrata ).

description

The strongly fragrant, perennial herbaceous plant reaches heights of 10 to 30 centimeters and has a simple, upright stem that is only branched in the cup area. Stems and wicker stems are loosely hairy.

The basal leaves are short stalked, the stem leaves sitting. The leaves are double to triple pinnate, with the almost bristle tips between 0.3 and 0.5 millimeters wide.

The baskets, which are between 9 and 12 millimeters wide, are 5 to 15 in a cluster. The cover is between 3.5 and 5 millimeters long and 3.5 and 5 millimeters wide. The elongated bracts are indistinctly arranged in roof tiles. The ray florets are 2.5 to 4 millimeters long. The fruit is a 2 millimeter long achenes without pappus .

The flowering period is July to August.

The number of chromosomes is 2n = 18.

Clusius yarrow ( Achillea clusiana )

Occurrence

The Clusius yarrow is endemic to the north-eastern Limestone Alps in Austria and is only widespread in the federal states of Upper, Lower Austria and northern Styria, where it is often found in the subalpine to alpine altitude range . The distribution area includes the Dead Mountains to the Schneeberg , the species also occurs on the Balkan Peninsula with Albania, Serbia, Greece, Macedonia and Bulgaria.

Freshly seeped rock debris, snow valleys and stone lawns are preferred as locations . The Clusius yarrow is a species of character of the order Thlaspietalia rotundifolii.

literature

Sauerbier, Langer: Alpine Plants - Endemics from Nice to Vienna , Eching 2000, ISBN 3-930167-41-7 .
Manfred A. Fischer , Wolfgang Adler, Karl Oswald: Excursion flora for Austria, Liechtenstein and South Tyrol. 2nd, improved and enlarged edition. State of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2005, ISBN 3-85474-140-5 .

Individual evidence

↑ ^a ^b Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . With the collaboration of Angelika Schwabe and Theo Müller. 8th, heavily revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 2001, ISBN 3-8001-3131-5 , pp. 933 .
↑ 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 Achillea clusiana In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.

Web links

Commons : Clusius yarrow ( Achillea clusiana ) - album with pictures, videos and audio files

[Oberdorfer2001-1] Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . With the collaboration of Angelika Schwabe and Theo Müller. 8th, heavily revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 2001, ISBN 3-8001-3131-5 , pp. 933 .

[Euro+Med-2] 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 Achillea clusiana In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.