United States, Illinois, DuPage, Morton Arboretum, The Morton Arboretum. 1 mile N of Lisle off I-88. Schulenberg Prairie, west side.
41.8013 -88.0836 WGS84
Asclepias; Andropogon; Pycnanthemum
Flower: Y Fruit: N Vegetation: Y Bud: N
Locally common, perennial, spontaneous, 1 m tall, 4.5 dm wide, rays deep purple, disks yellow. Georeferenced by: Andrew Hipporiginal GPS wrong, south of Arboretum