Yep, even mushrooms can be very beautiful if you know to capture in a photography. The talented photographer is - Mircea Ploscar - and from his courtesy the natural image can be downloaded under CC0 license. To see why I like so much this wallpaper with mushrooms you need to check it at the optimal resolution for you devices and then if you like, just right click (tap for few seconds on phones/tablets) on the image to save for use in desktop & phones backgrounds, apps, blog articles, web design projects...
Widescreen Desktop / Macbook (Retina): 2880x1800 (fits on: 2560x1600, 1920x1200, 1440x900)
Samsung Galaxy Tab & iPad: 2048x2048 (compatible with many tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many phones)