Observation 3168: Undetermined

When: 2007-04-29

Collection location: Morton Arboretum, Lisle, DuPage Co., Illinois, USA [Click for map]

Who: kilbad

No specimen available

Recently, I was hiking in the Morton Arboretum, located in Illinois, US (see: http://www.mortonarb.org/), and came across a very interesting fungus. I can best describe its structure as a large, roughly 8inch x 12inch, light brown/tan, sponge-like mass, that, when pressed on, releases similarly colored “dust” in the air (presumably spores?). I have posted pictures of it on my server, and wanted to know if you would help me identify it?

See:: http://www.kilbad.com/fungus

Regardless, thank you for the time and consideration!


[admin – Sat Aug 14 02:03:05 +0000 2010]: Changed location name from ‘Morton Arboretum, Illinois, US’ to ‘Morton Arboretum, Illinois, USA’

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Add Comment
Need photo
By: Patrick R. Leacock (MycoGuide)
2012-01-24 18:32:52 AEDT (+1100)

The link to your photo above is dead. If you still have the photo please upload it to this observation.

spring cleaning
By: Danny Newman (myxomop)
2011-04-26 09:18:51 AEST (+1000)

photos tend to lend a hand in the ID process. where is yours?

Very old giant puffballs
By: Nathan Wilson (nathan)
2007-05-01 00:05:38 AEST (+1000)

Like Darvin said most likely in the genus Calvatia.

By: Darvin DeShazer (darv)
2007-04-30 16:15:40 AEST (+1000)

It looks like a large puffball. Calvatia fragilis is a good place to start from, but you might need a microscope to get a positive ID.