A flowering succulent that can survive a harsh winter, hence the origins of the name from the Latin semper “always” and vivus “living”.
Want to know why I don’t usually photograph specimens against a white background, even though we are painting on white paper? Compare this example to the one above. The white background causes the camera to automatically make the subject look much darker, and much detail is lost. The contrast is just too high. A professional photographer would know how to deal with this, however if you want to take great specimen photos even just with your phone camera, try using a middle value background.