Snapping Bonnet

Mycena vitilis

Snapping BonnetJames K. Lindsey / CC BY-SA 3.0

About this fungus

Snapping Bonnet is a fungus in the Mycenaceae family. Its habitat and field characteristics are summarised below.

A very slender grey-brown bonnet with a long flexible stem, usually rising from buried twigs or bark in woodland litter.

What to check

Look for a small striate cap, whitish gills and a long grey-brown stem with a woolly base attached to buried wood. When gently stretched lengthwise, the stem can break with a distinct snap. This is useful supporting evidence, but many small bonnets still need microscopy for a secure species identification.

Variation

The cap ranges from beige to grey-brown, usually darker at the centre and paler near the lined margin. It begins conical or bell-shaped and can broaden with age. Wet caps may feel slightly sticky.

Lookalikes

Many Mycena species share the same small grey bonnet shape. Mycena galopus releases white latex when its stem is broken, while Snapping Bonnet does not. Cap colour and the snapping stem are not enough on their own when a precise record is required.

Habitat and range

Saprotrophic on buried twigs, bark and other small woody debris in broadleaved or mixed woodland. It is recorded in Europe, North America and other temperate regions.

Food safety

Inedible.

Photographs

Further reading

Wikipedia · First Nature

A glimpse of the research.

Weather response

Weather added a strong, repeatable signal beyond the usual seasonal pattern in this study.

Higher or lower ground?

Records tended to come from lower ground relative to other fungal records in the study.

These are patterns in recorded observations, not rules, forecasts or identification evidence. Local conditions and recording patterns can affect the findings.

Read six species examples →