common ragweed , hayfever weed ... Ambrosia artemisiifolia L. Family Name: Asteraceae (Compositae) - Aster or Sunflower Family. Identification Notes.
Common ragweed, also known as bursages, is herbaceous plant that belongs to the daisy family. It originates from tropical and subtropical parts of South and North America, but it can be found around the world today. Common ragweed grows near the rivers, on the meadows, pastures and seasonally ... False Ragweed is considered to be a major source of pollen allergy in certain areas of the USA where the plant is common. False Ragweed is an erect, bushy summer annual, similar to the genus Ambrosia, and growing to a height of 1.5m.
Milkweed (Asclepiadaceae) Family . common milkweed (Asclepias syriaca) perennial Giant ragweed is a leading cause of hay fever in late summer. It is a problem weed in crop fields, especially soybean fields. Herbicide-resistant strains seem to be evolving. Prehistoric Americans cultivated a large-fruiting strain for food and also used ragweed ceremonially and medicinally.
Common Ragweed is an early pioneer species of disturbed soils, has been introduced worldwide and is now a common weed in both agricultural and urban sites. With high population densities and prolific production of highly allergenic pollen, it is a major contributor to the agony of hayfever suffers around the globe.