(non RSBG) Numerous locations in Illinois collecting seed and herbarium specimens of rare native trees and shrubs for the Northern Illinois Woody Plant Collection at the Morton Arboretum, Lisle, IL.
Rhododendron Species Botanical Garden
Federal Way, Wa
(non RSBG) Numerous locations in Illinois collecting seed and herbarium specimens of rare native trees and shrubs for the Northern Illinois Woody Plant Collection at the Morton Arboretum, Lisle, IL.