Collection location: San Geronimo, Marin Co., California, USA [Click for map]
Single specimen found under live oak, somewhat waterlogged. White cap 6.3 cm across,no warts and no sign of an annulus. White spores, not amyloid, and approx. 9.4 X 6.5 microns. Some knife wounds on the base and stem but it does have a volva with a slightly enlarged base.
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check to see if the stipe is solid or with discrete, hollow chambers (I’ll post an illustration of what i mean). if so, could be an ocreata sans annulus; recheck for an amyloid rxn.
if base is bulbous, only section phalloides (ie ocreata) would have a membranous volva (apparent in your photo at top of bulb), altho a white phase section amanita is a possibility, since your specimen is so rain-beat and details are obscured. can’t be section vaginata (ie velosa) with a bulb.
spore shape or photo?
under live oak, with the general gestalt and timing, ocreata is the most likely choice.
Created: 2009-02-19 21:26:55 PST (-0800)
Last modified: 2009-02-19 21:26:55 PST (-0800)
Viewed: 68 times, last viewed: 2018-09-08 08:59:58 PDT (-0700)