Lepiota ignivolvata Bousset & Joss. ex Bousset & Joss.

Phylum: Basidiomycota - Class: Agaricomycetes - Order: Agaricales - Family: Agaricaceae

Lepiota ignivolvata

Lepiota ignivolvata is an occasional species in most kinds of woodland. It is most common in areas of chalk or limestone, where it first occurs in late summer and autumn; however, the conifer forests of West Wales also contain plenty of these distinctive dapperlings.

These rather stately dapperlings (dapper might be a better word!) are instantly recognisable by the orange-banded double rings low down on the stems.

Lepiota ignivolvata, Portugal

Distribution

Quite a rare find in Britain and Ireland, this dapperling mushroom is much more common in central and southern mainland Europe. As far as I can determine, Lepiota ignivolvata has not been recorded in North America.

Taxonomic history

The basionym of this species dates from as recently as 1948, when French mycologists M. Bousset and Marcel Josserand (1900 - 1992) described this dapperling and gave it the binomial scientific name Lepiota ignivolvata by which it is still generally known today.

Lepiota ignivolvata, Wales UK

Etymology

Lepiota, the genus name, comes from the Latin word lepis, meaning scale, and is a reference to the scaly surfaces of caps of members of this group of agarics.

The specific epithet ignivolvata means 'wrapped with fire' - a reference to the orange (flame-coloured) band in the centre of the stem ring. (This mushroom is referred to as the Orange-girdled Dapperling in some field guides.)

Toxicity

Until recently, dapperlings were more commonly referred to in Britain as parasols - a potential source of confusion that may have added to the incidence of poisoning, as the large Macrolepiota species (commonly known as parasols) are good edible mushrooms. Lepiota ignivolvata, like most if not all small woodland dapperlings, is regarded by many authorities as at least suspect and possibly a seriously poisonous mushroom, and so great care is essential to avoid accidentally including it when gathering mushrooms to eat.

Identification guide

Cap of Lepiota ignivolvata;

Cap

4 to 10cm in diameter, the delicate cap of this whitish dapperling mushroom has light tan scales, more crowded and darker towards the centre.

The cap flesh is creamy-white and very soft.

Gills of Lepiota ignivolvata

Gills

The free, crowded gills are white, sometimes becoming cream with age.

Stem of Lepiota ignivolvata

Stem

A distinctive feature of this parasol mushroom is the bold red-brown or orange banded double ring fairly low down on the stem.

The stem itself is white and smooth or finely scaly; it is parallel with a diameter of 0.6 to 1.5cm.

Spores of Lepiota ignivolvata

Spores

Ellipsoidal, smooth, 9-12 x 5-6µm; dextrinoid.

Show larger image

Spore print

White.

Odour/taste

Smell reminiscent of rubber, and an unpleasant rancid taste.

Habitat & Ecological role

On soil under conifers and broad-leaf trees.

Season

August to November in Britain and Ireland.

Similar species

The much more common Stinking Dapperling, Lepiota cristata looks and smells very similar, but it lacks the distinctive red-brown ring mark.

Lepiota ignivolvata, southern England

Reference Sources

Fascinated by Fungi, Pat O'Reilly 2016.

Funga Nordica: 2nd edition 2012. Edited by Knudsen, H. & Vesterholt, J. ISBN 9788798396130

British Mycological Society. English Names for Fungi

Dictionary of the Fungi; Paul M. Kirk, Paul F. Cannon, David W. Minter and J. A. Stalpers; CABI, 2008

Taxonomic history and synonym information on these pages is drawn from many sources but in particular from the British Mycological Society's GB Checklist of Fungi and (for basidiomycetes) on Kew's Checklist of the British & Irish Basidiomycota.

Acknowledgements

This page includes pictures kindly contributed by Simon Harding.

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