Shaggy Mane vs Magpie Inkcap
Coprinus comatus compared with Coprinopsis picacea — how to tell them apart in the field.
How to Tell Them Apart
Edible (before deliquescence). Has a white cap with shaggy, upturned scales rather than black with white patches. Grows in lawns and disturbed ground, not in beech woods. Much larger and more robust.
Side-by-Side Identification
| Trait | Shaggy Mane | Magpie Inkcap |
|---|---|---|
| Cap | 4–15 cm tall, 3–5 cm wide. Cylindrical and egg-shaped when young — like a white bullet or closed umbrella. Surface covered in recurved, shaggy scales (hence the name). White when fresh, developing pinkish-brown tones as it matures. The bottom edge begins to turn black and curl upward as autodigestion starts. | 5-8 cm tall when closed, expanding to 6-10 cm across when open. Initially egg-shaped to cylindrical, expanding to conical or bell-shaped before deliquescing. Black to very dark brown, covered with large, irregular white patches of veil remnants. Surface between patches is smooth. Flesh is thin and fragile. |
| Gills | Crowded and free. White at first, turning pink, then black as the ink process begins. The gills literally melt from the bottom edge upward — if the edges are already black and dripping, you're too late. | Free (not attached to stem). White when very young, rapidly darkening to gray, then black, before dissolving into inky black liquid (deliquescence). Crowded and very thin. |
| Stem | 10–20 cm tall, 1–2 cm thick. White, smooth, hollow. Has a small, movable ring that often slides to the base or falls off entirely. Separates cleanly from the cap. | 10-25 cm tall, 1-2 cm thick. White, smooth to finely fibrillose, hollow. Tall and slender, often slightly wider at the base. No ring. Surface is smooth and white throughout. |
| Spore print | Dark brown to black. | Black. Easily obtained by catching the inky liquid that drips from the dissolving cap. |
| Odor | Pleasant and mild when fresh. Smells faintly sweet or mushroomy — nothing off-putting. | Unpleasant when mature, described as chemical or tar-like by some observers. Young specimens have a milder, nondescript odor. |
| Habitat | Disturbed ground is the magic word. Lawns, roadsides, gravel paths, compost piles, construction sites, and the edges of parking lots. Shaggy Manes are saprobic — they eat dead organic matter in the soil. They especially love compacted or recently disturbed earth and often show up after rain in places you'd never expect a gourmet mushroom. | Saprotrophic on buried wood and rich leaf litter in deciduous woodlands. Strongly associated with beech (Fagus sylvatica) in Europe. Also found under other hardwoods including oak and elm. Prefers deep, undisturbed leaf litter on calcareous (chalky or limy) soils. |
| Season | Late summer through late autumn. Peak season is September–November in temperate regions. Can appear earlier in cooler climates or after heavy summer rains. | Autumn, typically September through November. Peak fruiting in October in most of its European range. Fruits after sustained autumn rains when soil temperatures begin to cool. |
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.