Question: how big are liberty caps?
Answer: Pileus: The cap of P. semilanceata is 5–25 mm (0.2–1.0 in) in diameter and 6–22 mm (0.24–0.87 in) tall. It varies in shape from sharply conical to bell-shaped, often with a prominent papilla (a nipple-shaped structure), and does not change shape considerably as it ages.