About Bolbitius titubans (Bull.) Fr.
The mushroom cap of Bolbitius titubans (Bull.) Fr. measures 1.5–7 centimetres (1⁄2–3 in) across. When young, the cap is egg-shaped, and it expands to become broadly convex as it develops, eventually reaching a nearly flat shape. The cap starts out yellow or bright yellow, fading to whitish or greyish as it ages. The stem is 3–12 cm (1–4+1⁄2 in) tall and 2–6 millimetres (1⁄8–1⁄4 in) wide. It is whitish-yellow, covered with a fine mealy powder, and very delicate. The gills are fragile and soft, and are either free from the stem or narrowly attached to it. Their color fades from whitish or pale yellowish to rusty cinnamon as they age. This species produces a rusty-brown spore print. Its spores are brown, elliptical, and smooth. Bolbitius titubans grows on grass, woodchips, compost, and dung. It is widespread and common across North America and Europe.
