Observation 116269: Scleroderma citrinum Pers.

When: 2012-11-09

Collection location: Indiana Dunes National Lakeshore, Indiana, USA [Click for map]

Who: Sophia Raziuddin (sophrazi)

Specimen available

Found next to a big, dead, burnt black oak. This specimen is only about 3-4cm in size. It is spherical in shape and black/dark purple when cut open. A picture of the gleba under the occular of a microscope is included.

Proposed Names

28% (1)
Recognized by sight
56% (1)
Recognized by sight: Based on large scales on the peridium and area found.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
P.S. (Princess Sophia):
By: Daniel B. Wheeler (Tuberale)
2012-11-11 09:14:15 AEDT (+1100)

Peridium is the name of the outside of the puffball. Scleroderma means “thick skin”. The peridium is the skin or outer rind of the fungus.

Your description of “black/purple when cut open” is helpful. But a photo would have been even more helpful. There should be sterile veins (white, orange, golden, some other color) within the purple/black area. These veins help identify the species. Some Sclerodermas also stain or turn color in the peridium when sliced. A photo showing any staining or color changes also would help with identification.

Sclerodermas are rarely found by themselves. There are usually many in the same area. If the original has already degraded, there may be others still nearby.

Is the last photo a close-up of the peridium?
By: Daniel B. Wheeler (Tuberale)
2012-11-10 12:26:08 AEDT (+1100)

If so, you have Scleroderma citrinum. It is the only species which peridial warts extending 2mm from the surface.

Created: 2012-11-10 10:01:25 AEDT (+1100)
Last modified: 2012-12-05 11:12:55 AEDT (+1100)
Viewed: 47 times, last viewed: 2017-06-15 00:22:40 AEST (+1000)
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