Never eat a wild mushroom identified only from a website, a book or an app. Have every find checked in person by an expert, such as a mycological society.
Identification
This is a small, relatively stocky dapperling. The cap is convex then flattened, whitish to pale pink, and covered with vinaceous-brown to purplish-brown scales arranged in concentric rings that merge into a darker, smooth centre. The gills are free, crowded and white to cream, and the spore print is white. The stem is short and thick for a Lepiota, whitish near the top, and below an indistinct, short-lived ring zone it is banded with pinkish-brown scales, often reddish in the base. There is no volva and no movable ring.
Identification to species requires experience and usually microscopy: the spores are small, ellipsoid and dextrinoid (staining red-brown in Melzer's reagent). Several close relatives, including Lepiota subincarnata (syn. L. josserandii), L. helveola and L. castanea, are similar and also contain amatoxins.
Habitat and ecology
Lepiota brunneoincarnata is a saprotroph living on organic matter in soil. It grows in grassy and disturbed places: lawns, parks, gardens, cemeteries, roadsides, hedgerows and the edges of woods, often on nutrient-rich or calcareous soils. It is most common in southern and central Europe and is also recorded in North Africa and parts of Asia. It fruits mainly from late summer to autumn and occasionally in spring after rain, often in small groups.
Uses and importance
This species has no food use. It belongs to a group of small Lepiota species that contain amatoxins, the cyclic peptides responsible for death cap poisoning. Amatoxins block RNA polymerase II, stopping protein production in cells, and mainly damage the liver; they survive cooking, drying and freezing. Because it grows in parks and gardens rather than deep in forests, it is a reminder that deadly mushrooms are not confined to woodland. Published case reports, particularly from southern Europe, document serious and fatal poisonings.
Safety and edibility
Deadly poisonous. Even a few small caps can be enough for severe poisoning. Symptoms usually begin 6 to 24 hours after eating, with intense vomiting, watery diarrhoea and abdominal pain. A deceptive improvement may follow while liver damage develops, with liver and sometimes kidney failure after two to four days.
If anyone may have eaten this species or any small scaly dapperling, seek emergency medical help immediately, even before symptoms appear, and take leftovers or photos. No preparation makes it safe. Small Lepiota species should never be eaten: as a rule, only large parasols identified in person by an expert are collected for the table, and children playing on lawns should be kept from tasting mushrooms.
If you suspect mushroom poisoning, call your local emergency number or poison centre straight away, even before any symptoms appear, and keep the remains of the mushrooms.
Look-alikes
It is most often confused with small or young parasols (Macrolepiota procera and related species). True parasols are much larger, with a snakeskin-patterned stem and a thick, double, movable ring; a mushroom under about 10 cm across with a scaly cap should never be treated as a parasol. Grassland edibles such as the fairy ring champignon (Marasmius oreades), which has a tough, smooth stem and widely spaced gills, and small Agaricus species, which have pink to dark brown gills, are other possible confusions. Its toxins are the same as those of the death cap (Amanita phalloides), which differs in its volva and greenish cap.
Around the world
Lepiota brunneoincarnata and its amatoxin-containing relatives are known from Europe, North Africa and Asia, and similar dangerous small Lepiota species occur in North America. Whatever the country, mycologists give the same advice: small scaly dapperlings from lawns and parks are never edible.
