Collection location: Tilden Regional Park, Contra Costa Co., California, USA [Click for map]
Growing in damp shade of live oak ( quercus agrifolia). Heavy clay soil.
[admin – Sat Aug 14 02:06:47 +0000 2010]: Changed location name from ‘Tilden Park, Berkeley, Alameda Co. California, USA’ to ‘Tilden Regional Park, Contra Costa Co., California, USA’
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not even with a microscope, but you need to check the spores and capillitium to be sure and eventually learn what you have in your area. I can only say for sure that this is not perlatum.
Mycoweb’s info was interesting. I have also noticed that the american umbrinum is much darker than the ones I know. The reason why nigrescens often is a misapplied name for it, could only have to do with the name, because it’s more like perlatum, with a netlike pattern when the spines have fallen off, just with darker spines (or rather clusters of spines).
L. molle is shaped like a lightbulb, with irregularly shaped spines and warts, and has big, rounded warts on the spores, can appear on many kinds of habitats.
L. lambinonii looks rather similar, but with smaller warts on the spores, a northern species.
L. ericaeum is usually more cylindric to subglobose, with even less visible spines on the spores, and it has a capillitium with a particular character: septate branches. Known from open habitats, like lawns, roadsides, beaches. A southern species.
And I’m sure there are several other species to find in California.
The secies concepts of Lycoperdon at least in the west really needs to be studied. There is lots of confusion. See Mykoweb’s discussion under Lycoperdon umbrinum. There are L. molle, lambinonii, umbrinum and L. ericaeum which Demoulin says occurs in the state of Washington. But how to seperate them and identify them?
But these two specimens were growing 30 cms apart. I presumed one was the more mature form of the other, It was soft and puffing while the younger one had the dense texture of a button mushroom.
I’m not certain #64116 looks too yellow and the exoperidial spines are not conical enough. I would put it in the L. umbrinum – molle group.
Created: 2009-11-10 16:03:24 WIB (+0700)
Last modified: 2010-08-28 09:00:08 WIB (+0700)
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