This is a medieval manuscript illustration depicting a boar with mushrooms growing out of its back. The boar is rendered in a stylized, somewhat crude manner, with a long, pointed snout and bristly fur indicated by short, dark lines. Two large, green mushrooms sprout from its back, connected by reddish stems. The background is a mottled brown, and the entire image is framed by a decorative border of repeating geometric patterns. The style is typical of medieval illuminated manuscripts, with flat colors and limited perspective. The overall impression is whimsical and fantastical.