Eupatorium fistulosum

Common Name: 
hollow-stemmed Joe-pye weed, trumpetweed
Scientific Name: 
Eupatorium fistulosum Barratt syn. Eupatoriadelphus fistulosus, Eutrochium fistulosum
Family Name: 
Asteraceae (Compositae) - Aster or Sunflower Family
Identification Notes
Life Cycle
native perennial, reproducing by seed
Stems
upright, stout, tall, unbranched, solid purple or green with purple streaks above, hollow, smooth, glaucous
Stems of Hollow-Stemmed Joe-Pye Weed
Stems of Hollow-Stemmed Joe-Pye Weed
Stems of Hollow-Stemmed Joe-Pye Weed
Stems of Hollow-Stemmed Joe-Pye Weed
Stems of Hollow-Stemmed Joe-Pye Weed
Stems of Hollow-Stemmed Joe-Pye Weed
Stems of Hollow-Stemmed Joe-Pye Weed
Leaves
whorled 4-7 per node, lanceolate narrow or broad, petioled, pubescent, margins blunt toothed with extend veins at points
Leaves of Hollow-Stemmed Joe-Pye Weed
Leaves of Hollow-Stemmed Joe-Pye Weed
Leaves of Hollow-Stemmed Joe-Pye Weed
Flowers
heads of purple to mauve or pink disk (tubulate) florets, 5-7 florets per head; terminal cluster, round topped becoming cylindrical
Flowers of Hollow-Stemmed Joe-Pye Weed
Flowers of Hollow-Stemmed Joe-Pye Weed