Death Cap vs Pear-shaped Puffball
Amanita phalloides compared with Lycoperdon pyriforme — how to tell them apart in the field.
This is a dangerous confusion.
At least one of these species is potentially deadly. Never eat a wild mushroom based on a photo comparison alone — verify with local experts.
How to Tell Them Apart
DEADLY. The egg stage of Amanita species can resemble small puffballs from the outside. Always slice every puffball in half from top to bottom. A true puffball will show uniform white flesh throughout. An Amanita egg will show the outline of a developing mushroom (cap, gills, stem) inside. This check is mandatory.
Side-by-Side Identification
| Trait | Death Cap | Pear-shaped Puffball |
|---|---|---|
| Cap | 5-15 cm across. Starts egg-shaped, opens to convex then flat. Color ranges from pale greenish-yellow to olive green, sometimes almost white. Surface is smooth and slightly sticky when wet. No warts or patches (unlike Fly Agaric). The green tinge is the key tell, but pale specimens can fool you. | Not a traditional cap. Fruiting body is 1.5-4 cm wide and 2-5 cm tall, pear-shaped or pestle-shaped: rounded on top, narrowing to a stubby sterile base. Surface covered in tiny granules or short spines when young (pale tan to light brown), wearing smooth with age. Skin becomes papery and develops an apical pore (ostiole) when mature. |
| Gills | White, closely spaced, and free (not attached to the stem). They stay white even as the mushroom ages — no color change. | None. Puffballs produce spores internally in a mass called the gleba. When young and edible, the gleba is firm and uniformly white. As it matures, the gleba turns yellowish, then olive-brown, and finally becomes a powdery mass of olive-brown spores. |
| Stem | 8-15 cm tall, white to pale green, with a prominent drooping skirt-like ring near the top. The base sits inside a cup-shaped volva (sac) that's often buried underground. Always dig up the base to check for the volva — it's the single most important identification feature. | Not a true stem. The narrow lower portion (subgleba) is sterile, whitish, and spongy. It serves as the attachment point to the wood substrate. White rhizomorphs (cord-like mycelial strands) extend from the base into the wood, a distinctive feature of this species. |
| Spore print | White. | Olive-brown spore mass released as a puff from the apical pore when the fruiting body is disturbed. |
| Odor | Faintly sweet and pleasant when young. Becomes sickly sweet and unpleasant as it ages — sometimes described as honey-like turning to rotting. | Mild, slightly earthy or musty. Not distinctive when young. Mature specimens releasing spores may have a slightly acrid or metallic scent. |
| Habitat | Forms mycorrhizal relationships with hardwood trees, especially oaks. Also found near beeches, chestnuts, and occasionally conifers. Prefers well-drained soils in woodlands, parks, and suburban yards with established trees. | Saprotrophic on decaying wood. Grows in dense clusters on rotting logs, stumps, buried roots, and woody debris in deciduous and mixed forests. The only common puffball that consistently fruits on wood. White rhizomorphs connecting the fruiting bodies to the substrate are a key identification feature. |
| Season | Late summer through late autumn. Peak fruiting is September through November in the Northern Hemisphere; March through May in Australia. | Late summer through autumn, typically August through November. Peak fruiting in September and October in temperate regions. Can appear earlier in wet years. |
Found one of these in the wild? Don't rely on memory — identify it from a photo with Orangutany and check it against both species before you touch it.