Feverwort

(Triosteum perfoliatum)

 

Color Photograph: U.S. Environmental Protection Agency

Line Drawing: Britton, N.L., and A. Brown. 1913. An Illustrated Flora of the Northern United States and Canada, Second Edition.

 

 

Feverwort (Triosteum perfoliatum)

Identification: Flowers small, with 5 fused green or brown petals. Flower with 5 elongate, prickly sepals. Flowers arising from upper leaf axils. Upper leaves ovate with acute tips and broadly flared leaf petioles fused around the stem. Plant 2 to 4 feet in height.

Distribution: Minnesota in the west to New England in the east and southward to Oklahoma, Louisiana, and Georgia.

Habitat: Feverwort is found in woods and thickets.

Flowering period: May to July.

Feverwort (Triosteum perfoliatum)

Similar Species:

The fused ovate and opposite leaves fused around the stem and the small, green or brown flowers arising from the leaf axils are distinctive features of Feverwort. Other similar eastern species of Triosteum exist.

Similar Species

No Similar Species