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Tecoma stans has invasive potential and occasionally becomes a weed. The species is considered invasive in Africa (especially South Africa), South America, Asia, Australia and the Pacific Islands. It now presents a significant danger for biodiversity. It competes with local species and can form thick, almost monospecific thickets.
Lysichiton americanus, also called western skunk cabbage (US), yellow skunk cabbage (UK), [2] American skunk-cabbage (Britain and Ireland) [3] or swamp lantern, [4] is a plant found in swamps and wet woods, along streams and in other wet areas of the Pacific Northwest, where it is one of the few native species in the arum family.
That includes states such as Wisconsin, which has declared it invasive, and in Missouri, which has declared it a noxious weed. Another type of forget-me-not, Myosotis scorpioides , also is ...
The fruit is a capsule but the seeds seldom set and propagation usually takes place when the bulbils are knocked off and grow into new plants. [8] [9] Plants with no flowers, only bulbils, are sometimes distinguished as the variety Allium vineale var. compactum, but this character is probably not taxonomically significant. [citation needed]
Butomus umbellatus is a Eurasian plant species in the family Butomaceae.It is the only species in the family. Common names include flowering rush [2] or grass rush.Introduced into North America as an ornamental plant it has now become a serious invasive weed [3] in the Great Lakes area and in parts of the Pacific Northwest. [4]
Puccinia jaceae var. solstitialis is a species of fungus in the Pucciniaceae family. It is a plant pathogen that causes rust.Native to Eurasia, it is the first fungal pathogen approved in the United States as a biological control agent to curb the growth of the invasive weed yellow starthistle (Centaurea solstitialis).
In these habitats it competes, often successfully, with introduced invasive weeds. [5] Flowers are pollinated by a variety of bees, including little carpenter bees, cuckoo bees, halictine bees, and masked bees; as well as flies, including syrphid flies, bee flies, tachinid flies, flesh flies, anthomyiid flies, and muscid flies.
An aggressive and hardy invasive species, T. terrestris is widely known as a noxious weed because of its small woody fruit – the bur – having long sharp and strong spines which easily penetrate surfaces, such as bare feet or thin shoes of crop workers and other pedestrians, the rubber of bicycle tires, and the mouths and skin of grazing ...