Hieracium murorum

Forest Hawkweed

The forest - hawkweed ( Hieracium murorum, syn. Hieracium sylvaticum ), also called wall - hawkweed, a plant belonging to the daisy family is (Asteraceae).

Description of the plant

The forest - hawkweed is a perennial, herbaceous plant, reaching the heights of growth between 20 and 60 centimeters.

Except for one or two smaller cauline leaves are all basal. The lanceolate, broadly lanceolate to oblong- ovate leaves are trimmed at the bottom or emarginate heart shaped by two sideways back teeth. The leaf margin is roughly in the lower part, the upper often only slightly serrated. The plain green or reddish dotted leaves are sparse, but long haired. The petioles are busy just like the stems with long hair and short hair thicker. Glandular hairs absent on leaves and stems.

Two to eight basket- shaped part inflorescences are in a paniculate inflorescence. The bracts of the flower heads are like the inflorescence stems glandular hairs abundant, others lacking hair the bracts but almost completely. In each flower head lot of yellow flowers are borne. All flowers are fünfzipfelige ray florets. Their bloom time is from May to August.

It is a relatively form- rich way that will easily also forms hybrids with other hawkweed species. There have already been described in Germany alone more than 100 subspecies.

Ecology

The forest - hawkweed is a Hemikryptophyt and a half rosette plant.

The flowers are cup flowers. Pollinators are bees. Bloom time is from May to August.

The fruits are achenes with ungeschnäbelte rough, brittle Pappus. The propagation takes place as Hafter Schirmchenflieger and water. Fruit ripening from June to August.

The Vegetative propagation is done through the rhizome, streamers missing.

Distribution and location

The forest - hawkweed occurs in temperate, northern latitudes of Eurasia, especially in the mountain regions. In Alaska, the western part of Canada and in the eastern parts of North America it was introduced ( neophyte ). In Central Europe it is widespread.

It grows in forests or forest edges, usually, but not necessarily, in drier places, as well as on mountain meadows, on gravel hallways or on the base of walls.

Swell

• Werner Rothmaler: Exkursionsflora the territories of the GDR and the FRG. Volume 2: vascular plants, 14th edition. Volk und Wissen, Berlin 1988, ISBN 3-060-12539-2
• Otto Schmeil, Jost hinge plates, Werner Rauh: Flora of Germany and its neighboring areas. 84th edition. Quelle & Meyer, Heidelberg 1968.
• R. Duell / H. Kutzelnigg: Pocket Dictionary of Plants in Germany. 7th edition, Quelle & Meyer Verlag, 2011, ISBN 978-3-494-01424-1