Conyza canadensis
Canadian fleabane ( Conyza canadensis)
The Canadian fleabane ( Conyza canadensis ), also called cat 's tail, is a flowering plant in the sunflower family ( Asteraceae). It is also often performed under the scientific name Erigeron canadensis of the genus Erigeron.
Description
When Canadian fleabane is a one-to two -year herbaceous plant that reaches a height slim upright from 30 to 100 centimeters, in favorable locations and more. It is rooted more than 1 m deep. The stem is branched only in the region of the inflorescence.
The dense, change-constant leaves are linear to linear- lanceolate with a maximum width of 1 centimeter. The lower, stationary rosette leaves are a little wider than the upper, narrow oval or narrowly spatulate and often serrated coarse. Stems and leaves are hairy loose shaggy.
In a total paniculate inflorescence which is usually very numerous flower heads are (over 100 up to several thousand ). The flower heads are about 3 to 4 mm long. The bracts are hairless in two to three indistinct rows, the inner slightly longer than the outer ones.
Each flower heads containing 50 to 65 flowers. The hermaphrodite tubular flowers are yellowish to greenish, the 25 to 45 rand union ray florets whitish or greenish, from time to time with a purple cast. The florets are only a few millimeters long, more or less upright and project beyond the envelope by only about 1 mm. The flowering time is in Europe from July to October.
At maturity forms on the 1 mm long achenes an off-white pappus of simple and serrated hairs 2-3 mm long.
Ecology
In the flowers probably self-pollination takes place. It makes plenty of fruits, which spread with the wind as Schirmchenflieger. There were 25 000 250 000 counted even fruits with handsome copies.
Occurrence
The Canadian fleabane is based in the United States and southern Canada. Specimens were brought in the mid-17th century to Europe and have run wild. Mid-18th century, the neophyte was already spread throughout Central Europe. Today, the Canadian fleabane has been abducted worldwide and occurs only rarely in the tropics, subtropics and in the Arctic. After the Second World War, the Canadian fleabane bombed in Stuttgart was the second most common plant debris.
The Canadian fleabane is widely distributed in front of premolars weed corridors, pavement joints, at dumps, roads, dams, in fields and vacant lots, or in shock or fire areas of the forest. It thrives in moderately rich in nitrogen, preferably sandy soils. The Canadian fleabane is a heat -loving plant, and accordingly there is no light in areas with harsh climates. After Ellenberg it is a regularity characteristic species of rauks companies or ruderal annuals ( Sisymbrietalia ).
Ingredients
It contains essential oils with lime and tannins.
Edibility
From April to July, the leaves can be used in herbal blends, herb butter or herbal salt. The taste is spicy bitter.