Jack O' Lantern Mushroom Omphalotus illudens (Schweinitz) Bresinsky & Besl.    Synonyms: Eastern American Jack-o'-lantern, Omphalotus olearius.
Kingdom Fungi   >   Phylum Basidiomycota   >   Class Agaricomycetes   >   Order Agaricales   >   Family Omphalotaceae   >   Genus Omphalotus   

Status:

Found in clusters at bases of deciduous stumps and tree trunks (usually oak); may be on ground on buried wood.

Description:

Cap: Bright orange, sticky; convex, to flat, to funnel-shaped; may have small umbo; flesh white with orange tinge; sweet odor. Gills: Yellow-orange, decurrent, close. Stalk: Yellow-orange. Handling stains hands. In a dark room, the gills of fresh specimens "give off an eerie green glow" (Lincoff). (J. Solem, pers. comm.)

There are 98 records in the project database.

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Jack O' Lantern Mushroom in Garrett Co., Maryland (7/16/2013). Photo by Matt Tillett. (MBP list)

Jack O' Lantern Mushrooms in Montgomery Co., Maryland (9/29/2019). Photo by Tim Friedlander. (MBP list)

Jack O' Lantern Mushroom in Howard Co., Maryland (8/20/2014). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

Jack O' Lantern Mushroom in Howard Co., Maryland (8/20/2014). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

A Jack O' Lantern Mushroom in Howard Co., Maryland (9/24/2011). Photo by Nancy Magnusson. (MBP list)

Jack O' Lantern Mushroom in Frederick Co., Maryland (10/14/2018). Photo by Bob Cammarata. (MBP list)

Jack O' Lantern Mushroom in Montgomery Co., Maryland (6/26/2019). Photo by Anne Looker. (MBP list)

Jack O' Lantern Mushrooms in Howard Co., Maryland (8/16/2013). Photo by Richard Orr. (MBP list)

Jack O' Lantern Mushroom in Baltimore Co., Maryland (10/5/2020). (c) panchosail, some rights reserved (CC BY-NC). Photo by panchosail via iNaturalist. (MBP list)

Jack O' Lantern Mushroom (gills of mature fruiting bodies) in Howard Co., Maryland (8/20/2009). Photo by Joanne Solem. (MBP list)

Jack O' Lantern Mushroom in Anne Arundel Co., Maryland (9/10/2020). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Baltimore City, Maryland (10/6/2018). (c) Peter M Martin, some rights reserved (CC BY-NC). Photo by Peter M Martin via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Frederick Co., Maryland (8/18/2019). (c) Giff Beaton, some rights reserved (CC BY-NC). Photo by Giff Beaton via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Montgomery Co., Maryland (9/1/2019). (c) thosmoore, some rights reserved (CC BY-NC). Photo by thosmoore via iNaturalist. (MBP list)

Jack O' Lantern Mushrooms in Frederick Co., Maryland (9/28/2014). Photo by Jim Brighton. (MBP list)

Jack O' Lantern Mushroom in Frederick Co., Maryland (8/18/2019). (c) Giff Beaton, some rights reserved (CC BY-NC). Photo by Giff Beaton via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Allegany Co., Maryland (10/1/2014). Photo by Kimberly Booth. (MBP list)

Jack O' Lantern Mushroom in Frederick Co., Maryland (8/18/2019). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Jack O' Lantern Mushroom in Frederick Co., Maryland (8/17/2019). (c) Scot Magnotta, some rights reserved (CC BY-NC). Photo by Scot Magnotta via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Frederick Co., Maryland (8/8/2020). (c) romainclem, all rights reserved. Photo by romainclem via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Frederick Co., Maryland (8/18/2019). (c) Ashley M Bradford, some rights reserved (CC BY-NC). Photo by Ashley Bradford. (MBP list)

Jack O' Lantern Mushroom in Anne Arundel Co., Maryland (10/14/2020). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Montgomery Co., Maryland (9/1/2019). (c) thosmoore, some rights reserved (CC BY-NC). Photo by thosmoore via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Howard Co., Maryland (10/1/2020). (c) msoutherland, some rights reserved (CC BY-NC). Photo by msoutherland via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Howard Co., Maryland (10/1/2020). (c) msoutherland, some rights reserved (CC BY-NC). Photo by msoutherland via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Montgomery Co., Maryland (10/17/2020). (c) abverl, some rights reserved (CC BY-NC). Photo by abverl via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Frederick Co., Maryland (10/6/2019). (c) rhoads, some rights reserved (CC BY-NC). Photo by rhoads via iNaturalist. (MBP list)

Jack O' Lantern Mushroom (growth habit) in Howard Co., Maryland (10/9/2009). Photo by Robert Solem. (MBP list)

Spores collected from a Jack O' Lantern Mushroom specimen in Howard Co., Maryland (8/20/2014). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

Jack O' Lantern Mushroom in Montgomery Co., Maryland (10/19/2020). (c) ama231, some rights reserved (CC BY-NC). Photo by ama231 via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Frederick Co., Maryland (11/24/2020). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Jack O' Lantern Mushroom in Frederick Co., Maryland (11/24/2020). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Jack O' Lantern Mushroom in Montgomery Co., Maryland (10/19/2020). (c) ama231, some rights reserved (CC BY-NC). Photo by ama231 via iNaturalist. (MBP list)

Jack O' Lantern Mushroom in Montgomery Co., Maryland (10/19/2020). (c) ama231, some rights reserved (CC BY-NC). Photo by ama231 via iNaturalist. (MBP list)

Spores collected from a Jack O' Lantern Mushroom specimen in Howard Co., Maryland (8/20/2009). Ellipsoid, smooth; measured 4.5-5.0 X 3.2-4.0 microns. Photo by Robert Solem. (MBP list)


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