Hawkweed rich in runners
| Hawkweed rich in runners | ||||||||||||
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| Systematics | ||||||||||||
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| Hieracium flagellare | ||||||||||||
| Willd. |
The streamer rich hawkweed ( Hieracium flagellare ) is a plant from the genus of hawkweed ( Hieracium ) within the family of Compositae (Asteraceae). It is native to large parts of Europe and occurs as a neophyte in the eastern United States as well as southwestern and eastern Canada .
description
Vegetative characteristics
The runners-rich hawkweed is a perennial herbaceous plant that reaches heights of 5 to 20 centimeters. The upright stems are covered with fine and coarse 0.2 to 0.4 cm long hair and have a glandular and star-like hairy base.
At the base of the stem there are eight to twelve, sometimes more basal leaves , while there are no leaves or up to two or more leaves on the stem. The leaf blade is at a length of 2-13 centimeters and a width of 0.8 to 2.5 centimeters to spatulate upside-lanceolate with wedge-shaped Spreitenbasis and rounded or tapered Spreitenspitze. The margins of the spread are whole. Both the underside and the upper side of the leaf are usually covered with 0.1 to 0.4 centimeters long, fine and coarse hairs, with those on the underside being star-shaped.
Generative characteristics
The flowering period in North America includes the month of May. The more or less umbel -like to panicle -like total inflorescence usually contains two to four, occasionally more cup-shaped partial inflorescences . The inflorescence shaft is star-like and hairy glandular. The semi-spherical with a diameter from 0.9 to 1.3 centimeters involucre containing 30 to 40 at the bottom with rough and occasionally rating glandular hairs occupied bracts sharpened upper end. The flower heads contain 90 to 120 or more ray florets. The yellow to yellowish white ray florets are 0.6 to 1 centimeter long and usually have a red stripe on the underside.
The achenes are columnar with a length of 0.1 to 0.25 centimeters. The pappus consists of 25 to 40 or more white bristle hairs, which are 0.4 to 0.5 centimeters long.
Chromosome number
The number of chromosomes is 2n = 54.
Occurrence
The natural range of the runners-rich hawkweed encompasses large parts of Europe. It occurs in Germany, Great Britain, Austria, Poland, the Czech Republic, Hungary, the Balkan Peninsula, the Baltic States, Finland, Russia, Slovakia, Ukraine, Moldova, Romania, Georgia and the Caucasus. In the eastern United States as well as eastern and southwestern Canada, the species occurs as a neophyte .
The runners-rich hawkweed thrives in North America at altitudes of 10 to 600 meters where it grows on disturbed areas, along paths and on the edges of forests.
Taxonomy
It was first described as Hieracium flagellare in 1814 by Carl Ludwig Willdenow in Enumeratio Plantarum Horti Botanici Berolinensis, ... , page 54. A synonym for Hieracium flagellare Willd. is Pilosella flagellaris (Willd.) PDSell & C.West .
swell
- John L. Strother: Asteraceae . Hieracium . In: Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico . Magnoliophyta: Asteridae, part 6: Asteraceae, part 1 (Mutisieae-Anthemideae). Volume 19. Oxford University Press, New York and Oxford 2006, ISBN 0-19-530563-9 , Hieracium (English, Hieracium flagellare - online - this work is online with the same text.). (Sections Description, Occurrence and Systematics)
Individual evidence
- ↑ a b c d e f John L. Strother: Asteraceae . Hieracium . In: Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico . Magnoliophyta: Asteridae, part 6: Asteraceae, part 1 (Mutisieae-Anthemideae). Volume 19. Oxford University Press, New York and Oxford 2006, ISBN 0-19-530563-9 , Hieracium (English, Hieracium flagellare - online - this work is online with the same text.).
- ↑ Hieracium flagellare at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ a b Pilosella flagellaris. In: The Euro + Med PlantBase Project. www.bgbm.org, accessed on April 6, 2018 (English).
- ↑ Hieracium flagellare at Tropicos.org. Missouri Botanical Garden, St. Louis, Retrieved March 25, 2017.
