Mushroom-spotting deserves to become a more popular hobby. Just when cooler, shorter days put paid to butterflies and wildflowers, a host – some 15,000 species – of wild fungi starts to appear in almost any habitat. And they come in all shapes, colours and smells. This tentacled creature is the starfish fungus, also known as the anemone stinkhorn Aseroe rubra. It is found in gardens and parks and emits a stench of carrion to attract any flies still around. These then spread its spores on their travels.