The stem seems too thin and the pale coloration of both the cap and stem prompted a quick keying in Nordic Macromycetes Vol. 2. It keys to Leucocoprinus denudatus. Else Vellinga has recently changed that name to L. straminellus.
Here is a web site that shows photos of both species. Leucocoprinus denudatus
Created: 2007-07-27 10:41:19 PDT (-0700)
Last modified: 2007-07-27 14:40:17 PDT (-0700)
Viewed: 468 times, last viewed: 2017-11-24 10:45:42 PST (-0800)