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Omphalotus olearius   (Jack o'Lantern)
Family
Marasmiaceae
Location
North America and Europe
Dimensions
Cap 8-12 cm diameter, stem up to 14 cm tall * 1-2 cm thick
Edibility
Poisonous

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.




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WARNING

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