Search results
Results from the WOW.Com Content Network
Invasive O. pes-caprae forms peanut-sized bulbs that survive the dry California summer, then sprout after rainfall. Indigenous to South Africa, Oxalis pes-caprae is an invasive species and noxious weed in many other parts of the world, including the United States (particularly coastal California), [5] Europe, [6] The Middle East and Australia. [7]
This is a list of invasive species in North America.A species is regarded as invasive if it has been introduced by human action to a location, area, or region where it did not previously occur naturally (i.e., is not a native species), becomes capable of establishing a breeding population in the new location without further intervention by humans, and becomes a pest in the new location ...
Verbesina occidentalis has yellow disk flowers. The number of ray flowers will range anywhere from two to five petals. The most common petal number is two. [3] The flowers are sparse and are not evenly arranged around the head of the flower. This makes the plant looks like it is uneven or off balance. A distinctive feature of the plant is its ...
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 ...
It has fleshy dark green, heart-shaped leaves and distinctive flowers with bright yellow, glossy petals. [4] [5] Native to Europe and Western Asia, it is now introduced in North America, where it is known by the common name fig buttercup and considered an invasive species.
Inflorescence in bloom. Solidago canadensis, known as Canada goldenrod or Canadian goldenrod, is an herbaceous perennial plant of the family Asteraceae. [2] It is native to northeastern and north-central North America [3] and often forms colonies of upright growing plants, with many small yellow flowers in a branching inflorescence held above the foliage.
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.
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).