This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Russula virescens - Photo by Nathan Wilson. Found during the 2004 NAMA foray to Asheville, North Carolina on 2004-07-14. Identifed using Mushrooms of West Virginia and the Central Appalachians by William Roody.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
Russula virescens - Photo by Nathan Wilson. Found during the 2004 NAMA foray to Asheville, North Carolina on 2004-07-14. Identifed using Mushrooms of West Virginia and the Central Appalachians by William Roody. Image source: http://mushroomobserver.org