Eupatorium hyssopifolium, also known as hyssopleaf thoroughwort, is a fall-blooming herbaceous plant native to North America.[3] Like other members of the genus Eupatorium it has inflorescences containing a large number of very small flower heads, each with 5 white disc florets but no ray florets.[4] At 0.5 to one meter (20-40 inches) tall,[3] it is towards the shorter end of the range of heights found in Eupatorium species.[4]
Eupatorium hyssopifolium var. hyssopifolium - leaves 2–5mm wide
Eupatorium hyssopifolium var. laciniatumA.Gray - leaves 5–15mm wide
Distribution and habitat
Eupatorium hyssopifolium is found in much of the eastern and south-central United States, from Massachusetts west to Wisconsin, and as far south as Texas and Florida.[3][5] It grows in moist soils[6] and can be found in woodlands and oak savannas, pastures, fields, roadsides, and disturbed areas, over both acidic and calcareous substrates.[7]
Ecology
Eupatorium hyssopifolium increases in abundance with fire disturbance,[8] and is most commonly found in habitats with high fire return intervals.[9]
Uses
Eupatorium hyssopifolium can be used medicinally (applied externally for insect and reptile bites).[6] It can also be planted near crops to attract beneficial insects.[10]
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