Hieracium lachenalii

Ordinary hawkweed ( Hieracium lachenalii )

Ordinary hawkweed ( Hieracium lachenalii ) is a herbaceous plant of the sunflower family ( Asteraceae). Their range extends from Western Europe deep into Eastern and Southeastern Europe and the Caucasus.

Description

The plants are 20 to 50 inches high and cause milk juice. Basal leaves are usually present at flowering time, usually two to five (rarely to 8), 1-15 cm long and 1-4 cm wide. They are narrow - ovate to lanceolate, obtuse or acute, coarsely toothed on the edge of gray-green or bright green above, often crowded wine red, upper side almost never spotted, the spots contrasting only slightly against the tide. The usually three to five, rarely one to twelve stem leaves are alternate, some or all of which are hand sometimes patchy - fuzzy hairy. The lower, still up significantly stalked stem leaves are similar to the basic inner leaves, which are smaller and lanceolate and thickness taper to wide sitting top, however. The centrally projecting stem leaves are stalked up very short.

Bloom time is June to August. The upright stems are mostly occupied in the upper half of stems stellate hairs gray and with dark glandular hairs. The total inflorescence is a panicle, he has three to eight (rarely two to ten) branches, and ten to twenty-five (rarely five to fifty ) head. The standing a few rows of bracts are narrow to broad, obtuse to acute, usually hairless or hairy to moderate, but poor - to reichdrüsig, flockenlos or to moderate flaky. The cup bottom missing chaff leaves. Measure the cup ( with outstretched flowers) 2 to 2.5 inches in diameter, the flowers are ligulate, bisexual and bright golden yellow.

The achenes are about 4 inches long, the hair ring row and dirty white, the hairs are brittle under pressure on the tip.

Occurrence

Popularization

The closed range extends from the Pyrenees across Europe (in the north but with sparing of Iceland and the northern part of Scandinavia) up to Central Siberia, and then again to occur in the coastal mountains of the Okhotsk Sea (the exact course of the eastern border is, however, because of the question classification of some small species not entirely clear ). In Southeast Europe, the area extends to Romania. For Albania and Bulgaria only few finds are known. In Turkey, the species is detected only sporadically, but it occurs again in the Caucasus and part areas of the Pamir to the Alatau on ( again with definition problems ). Naturalized is the kind in North America and New Zealand.

Locations and Ecology

The Common Hawkweed grows individually to droves in partially shaded, occasionally, the light- rich sites on moderately fresh, moderately nutrient-rich to nutrient-poor, calcareous, poor in lime to lime-rich, shallow to deep, partly loamy soil.

The spectrum of light conditions and the soil reaction is probably partly related to the clan specification.

The species often occurs in airy oak woods ( Quercion robori - petraeae ), in beech forests because of the unfavorable light conditions have been rare. Also tight fitting bushes, forest mantle zones and impact corridors are only occasionally inhabited. Characteristic is the kind of contrast for different acidocline Hieracium fringes of the Black Forest. Also in stocks of bristle grass and blue grass companies it occurs rarely in Mesobromion fragments. However, at secondary sites such as roadsides, quarries and railway facilities should resign over other hawk herbs. In harsh altitudes of the mountains and sandy soils the Common Hawkweed missing regional basis. It rises to about the deciduous forest border.

Variability

Hieracium lachenalii was first described in 1802 by Johann Rudolf Suter. The complex was divided by tooth on.