Welcome to Mushroom World, your resource for mushroom information. On this site you can search for mushrooms in our database and read about them. You can use this information to identify fungus, but do not eat mushrooms you are not 100% certain of. Use many resources, and be skeptical of your own conclusions. It takes normally years of experience to be able to identify mushrooms reliably. The responsibility for the identification is yours; the site takes no responsibility for damage caused by wrong identifications. Please read the disclaimer.
You can browse the database from the alphabetical list or by going directly to the mushroom records which are listed under the categories poisonous, inedible and edible. You can also search the database based on mushroom name or some property.
If you know how a mushroom looks, but need help to identify it, try our Mushroom identification helper. You can browse mushroom pictures there and perhaps find a match.
If this site cannot help you, we recommend mushroomobserver.org, which is a community site for mushroom identifications. There are also Facebook groups for mushroom identifications like the Mushroom Identification - public group.
Today's mushroom is Omphalotus olearius (Jack o'Lantern). The mushroom is Poisonous. It grows in North America and Europe.
Description: Omphalotus olearius, also know as Jack o'Lantern is an orange mushroom that usually grows in dense tufts from the decaying underground roots of olive trees.
Cap initially convex with an inrolled margin, flattening and eventually developing an upturned wavy margin. The colour is bright orange to yellowish-orange. Gills deeper orange, recurrent narrow and forked. Stem orange, smooth, tapering and darkening towards the base.
Similar species Omphalotus illudens which has a more brighter orange cap.
Omphalotus olearius on the First Nature Web site.
Omphalotus olearius on Wikipedia.
Dimensions: Cap 8-12 cm diameter, stem up to 14 cm tall * 1-2 cm thick
If you are interested in this mushroom, look it up in our database. You can find more detailed pictures there.