Project sample no: 18-GEITZN 17 MAR 08. Plants aged 4-5 years; original material unknown.
Echinacea purpurea: Site characteristics influence on alkylamide concentration in dormant roots Collected 31 January - 18 March 2008 Extracts performed and analyzed by Nadja Ceck, UNC-Greensboro; Project Co-leader Jeanine Davis, NCSU; Cultivated or Captive