Vanessa cardui Vanessa cardui Vanessa cardui is a well-known colorful butterfly, known as the painted lady, or in North America as the cosmopolitan. "V. cardui" is one of the most widespread of all butterflies, found on every continent except Antarctica and South America. In Australia, "V. cardui" has a limited range around Bunbury, Fremantle, and Rottnest Island. However, its close relative, the Australian painted lady ("V. kershawi", sometimes considered a subspecies) ranges over half the continent. Other closely related species are the American painted lady ("V. virginiensis") and the West Coast lady ("V. annabella"). "V. cardui" occurs in any temperate zone, including
Black and white some of the early home computers; this was to accommodate black-and-white TV sets, which would display a color signal poorly. (Typically a different shading scheme would be used for the display in the black-and-white mode.) In computing terminology, "black-and-white" is sometimes used to refer to a binary image consisting solely of pure black pixels and pure white pixels; what would normally be called a black-and-white image, that is, an image containing shades of gray, is referred to in this context as grayscale. Black and white Black-and-white (B/W or B&W) images combine black and white in a continuous spectrum, producing a