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Weed identification may relate to History of plant systematics, the classification of plants; Botany, the study of plants; Taxonomy, the classification of living things;
Impatiens capensis, the orange jewelweed, common jewelweed, spotted jewelweed, jewelweed, [3] spotted touch-me-not, or orange balsam, [4] is an annual plant in the family Balsaminaceae that is native to North America. [5]
Weeds growing in the cracks of a concrete staircase (Epilobium roseum, Chelidonium majus, Oxalis corniculata, Plantago major)A weed is a plant considered undesirable in a particular situation, growing where it conflicts with human preferences, needs, or goals.
Datura stramonium, known by the common names thornapple, jimsonweed (jimson weed), or devil's trumpet, [2] is a poisonous flowering plant in the Daturae tribe of the nightshade family Solanaceae. [3] Its likely origin was in Central America , [ 2 ] [ 4 ] and it has been introduced in many world regions.
Locoweed (also crazyweed and loco) is a common name in North America for any plant that produces swainsonine, an alkaloid harmful to livestock.Worldwide, swainsonine is produced by a small number of species, most of them in three genera of the flowering plant family Fabaceae: Oxytropis and Astragalus in North America, [1] and Swainsona in Australia.
This plant is found in tropical and subtropical regions of North America, Asia, South America, and Africa, [3] situated in gardens, road sides, farm fields and disturbed sites. [4] B. alba is an annual or short-lived perennial, which is considered a weed in the United States. [2] However, B. alba leaves are edible and can be used as medicinal ...
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Horseweed is commonly considered a weed, and in Ohio, Oregon, and some other locations, [11] it has been declared a noxious weed. [12] [13] It was the first weed to have developed glyphosate resistance, reported in 2001 from Delaware. [14] It can be found in fields, meadows, and gardens throughout its native range.