St. Benedict's thistle, Centaurea benedicta (Cnicus benedictus). Chromolithograph after a botanical illustration by Walther Muller from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887.
St. Benedict's thistle, Centaurea benedicta (Cnicus benedictus). Chromolithograph after a botanical illustration by Walther Muller from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887.