agrostide des chiens (Agrostis canina)
Caption: Jacob Sturm, Johann Georg Sturm - Deutschlands Flora in Abbildungen (1796). - This image is in the public domain because its copyright has expired.

agrostide blanca (Agrostis gigantea)
Caption: USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 203.

agrostide des chiens (Agrostis canina)
Caption: Walter Hood Fitch - Illustrations of the British Flora (1924) - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".

agrostide blanche (Agrostis gigantea)
Caption: USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 203.