When: 2008-02-02

Collection location: Albion, Mendocino Co., California, USA [Click for map]

Who: Douglas Smith (douglas)

No specimen available

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Leucogaster citrinus
By: Daniel B. Wheeler (Tuberale)
2008-08-10 16:42:58 AEST (+1000)

I now believe that this specimen is actually Leucogaster citrinus. It does not have minute chambers in the gleba, but rather largish sacks filled with white spore-bear tissue. When fresh, it is distinctive in having a white latex as well. As slightly dried (1 or more hours), the latex would have dried unless it was fresh material. If mature, it should have a rather pleasant aroma, which smells to me somewhat like sweetened coconut. It is quite pleasing to small animals, especially squirrels, mice, voles, etc. That could account for the damage shown: a small nibble from a small animal.

For more information, check Field Guide to North American Truffles by Trappe, Evans and Trappe; or Key to Spores of the genera of Hypogeous Fungi of North Temperate Forests by Castellano, Trappe, Maser and Maser. If you send me an email at dwheeler@ipns.com, I will email you the pertinent information, but if you have access to a powerful microscope, the spores should be 6-19 microns thick and have reticulate or spiny spores.

Daniel B. Wheeler

May be Leucogaster sps.
By: Daniel B. Wheeler (Tuberale)
2008-08-08 21:14:38 AEST (+1000)

I cannot see the minute chambers which are specific to most Rhizopogons. There does appear to be some white latex present, and a mostly solid gleba (interior). I would suggest this was probably Leucogaster sps. Can you supply any potential host plants nearby?

Daniel B. Wheeler