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Guide
This article mainly introduces 5 kinds of plants named after "Canada", the first of which has a good pharmacological effect, bringing great benefits to people, the last one, although beautiful flowering, but its reproduction speed is extremely fast, greatly squeezing the living space of other native plants, destroying the existing ecological balance of the continent, as long as we find, everyone has to get it! Shovel it out!
Canadian canopy Conyza canadensis
It is an annual herb of the Asteraceae family, white wine grass, with spindle-shaped roots and fibrous roots. The stem is erect, 50–100 cm tall; Flowering takes place from May to September.
Young stems and leaves can be used as pig feed; The whole herb is used to reduce inflammation and hemostasis, dispel rheumatism, and treat hematuria, edema, hepatitis, cholecystitis, pediatric head sores and other diseases. According to foreign literature, North America is used to treat dysentery, diarrhea, trauma and repel worms; In Central Europe, fresh plants are commonly used as hemostatic drugs, but their juice and mashed leaves have a stimulating effect on the skin.
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Canadian finch Bromus canadensis
Poaceae is a perennial herb with a short rhizome and scattered pubescence. The stalks are 70–120 cm tall and have 6 segments, which are inverted pubescent. The flowering and fruiting period is from July to September. Chromosome 2n = 14.
It is found in Japan, Mongolia, the Russian Far East and North America. The mainland is distributed in the Daxing'an Ridge in Inner Mongolia. It is found in the middle mountain belt, low-humidity woodland and meadows.
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Elymus canadensis
Poaceae is a genus of herbs with short rhizomes. The stalks are few clumpy, erect or slightly knee-bent at the base, and about 1 meter tall.
Native to North America, mainland Beijing and other places have introduced cultivation.
Canadian precocious Poa compressa
Poaceae is herbaceous, perennial with a creeping rhizome. Stalks flattened, erect or oblique at base, solitary or sparsely clustered, 30–50 cm tall, 1.5–2 mm in diameter, with 5–6 segments. The flowering and fruiting period is from June to August.
Widely distributed in Europe, Asia and North America; Mainland Qingdao, Jiangxi Lushan, Xinjiang, Hebei and Tianjin have been introduced. It grows in wet meadows in forest belts.
Canadian goldenrod Solidago canadensis
Asteraceae, goldenrod is a perennial herb with a long rhizome. The stem is erect and up to 2.5 m tall. The leaves are lanceolate or linear-lanceolate, 5–12 cm long. The cephalic inflorescences are small, 4–6 mm long, and grow unilaterally on the inflorescence branches, with mostly curved inflorescences branching and single-sided head-like inflorescences forming a developing panicle. The total bracts are linear-lanceolate, 3–4 mm long. The marginal tongue-shaped flowers are short.
Canadian goldenrod is native to North America, found in Canada in 1753 and named Canadian goldenrod (Solidago canadensis), because the golden yellow flowers are very beautiful, first made into dried flowers for decoration introduced into China, and later gradually cultivated in parks and gardens.
The vitality of the Canadian goldenrod is very tenacious, hardy, drought-resistant and barren, as long as there is soil where it can survive, and its seed germination is even stronger, landing can take root, and it basically has no natural enemies, herbivores generally do not like to eat.
In recent years, Canadian goldenrod has blossomed all over the mainland, and the speed of spread is getting faster and faster, day after day, inch by inch encroaching on farmland and arable land, spreading faster and faster.
It is not easy to completely eradicate the Canadian goldenrod, its tenacious vitality, developed roots, falling roots, super adaptability, drought and cold resistance, making it a very strong plant in the invasion of mainland organisms.
You will often find that the vacant land next to the city subway station, the vacant land waiting to be developed real estate, and the neglected park, Canada has the most goldenrods, forming a scene full of golden armor.
It is advocated here that as long as you see a Canadian goldenrod, you should be condemned by everyone and eradicate it immediately, otherwise the scope of its invasion will become larger and larger, seriously affecting the survival of other native plants, and causing ecological damage to a large extent!
The whole people action, as long as they see a yellow flower in Canada, everyone must be condemned and completely eradicated!
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