caption: The image shows an open book with a drawing of a fern leaf on it. The book is titled "Ferns of the World" and contains detailed illustrations of various ferns, each with its own unique shape and texture. The leaves are arranged in a symmetrical pattern, with some overlapping each other, and the veins of the leaves are clearly visible. The colors used in the drawing are mostly shades of green and brown, giving the image a natural feel.