chastetree Picture modified from Richard Wettstein - Handbuch der Systematischen Botanik (1924) - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de
chastetree Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has expired.
chastetree USDA-NRCS PLANTS Database - Not copyrighted image
