Recognize Panaeolus cyanescens by its small gray to whitish cap, usually 1/2 to 1-1/2 inches (1-4 cm) wide, on a thin white stem about 2-1/2 to 4 inches (6-10 cm) tall.
The gills turn very dark and appear mottled, and the stem often bruises blue where handled.
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Check Panaeolus cyanescens for a small, slender mushroom with crowded dark gills.
A dark spore deposit on nearby surfaces can add another visible clue.
Panaeolus cyanescens shows useful visual changes from immature pins to mature, spore-bearing mushrooms.
A few small dung-loving mushrooms are regularly confused with blue meanies.
mottlegill(Panaeolus antillarum)
Often shares the same habitat and pale cap. It is usually larger, does not bruise blue, and has dark gills with whitish edges rather than a distinctly mottled look.
banded mottlegill(Panaeolus cinctulus)
Similar in size and shape when young. Its cap commonly shows a darker band near the edge as it dries, and bruising is weak or absent instead of clear blue tones.
haymaker's mushroom(Panaeolina foenisecii)
Can be a similar small brown lawn mushroom. It lacks blue bruising and has brown, not black, spore color, giving the gills a softer cinnamon-brown look.
Panaeolus cyanescens is widely reported from tropical and subtropical regions rather than a clearly defined native range, so habitat is more useful than geography for identification.
It is typically found on dung in open, heavily grazed pastures and lawns, especially in humid lowland areas.
Finding it in cattle country helps narrow identification far more than country alone.
Confirm Your Plant Species
Use Botan to double-check your plant ID
Use Botan to compare a photo and help confirm the identification before you label or log it.
It is easiest to identify when mature, after the cap and gills are fully developed. For blue meanies identification, check the pale gray to whitish cap, crowded dark mottled gills, and blue bruising on damaged tissue.
Identify it from a photo with Botan, then review plant details, care information, and common problems for that species.
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