Poaceae groups, using the C3 and C4 photosynthetic pathways for carbon fixation. The C4 grasses have a photosynthetic pathway, linked to specialized Kranz leaf anatomy, which allows for increased water use efficiency, rendering them better adapted to hot, arid environments and those lacking in carbon dioxide. The C3 grasses are referred to as "cool-season" grasses, while the C4 plants are considered "warm-season" grasses. The grass family is one of the most widely distributed and abundant groups of plants on Earth. Grasses are found on every continent, including Antarctica with the presence of Antarctic hair grass on the Antarctic Peninsula. Grasses are
Portrait of a Lady Known as Smeralda Brandini clients for many years, is likely that Cartwright has confused Viviano with his son Michelangelo (Michele) because in 1475, the year of the tournament of La Giostra to which she refers, Michele was only 18 years old and his father was much better known. Art historians note new features in the composition: "earlier Florentine portraits were in profile. The woman's three-quarter pose, with her hand on the window frame, was Botticelli's own invention". The portrait is thought to be the first example of a three-quarters pose in Florentine portrait painting. "By abandoning the profile pose traditionally used in depictions of