When: 2007-06-29
Collection location: Grass Lawn Park, Redmond, Washington, USA [Click for map]
Notes:
growing clustered under maple
pileus: diam: 120 mm wide and 45 mm high in mature specimens, 30 mm wide and 13 mm high in buttons; exterior reddening after rubbing
trama: 10 mm thick in mature specimens, 7 mm thick in buttons; slightly bitter taste; interior staining yellow after cutting
lamellae: 50 mm long and 9 mm high in mature specimens, 16 mm long and 3 mm high in buttons; pinkish gills, darkening with age
stipe: 50 mm long, 11 mm wide at apex, 15 mm wide at base in buttons, slightly bulbous-clavate; 75 mm long, 22 mm wide at apex, 24 mm wide at base in mature specimens, curved towards base, slightly bulbous base; in general the stipe is irregularly shaped
[admin – Sat Aug 14 02:00:49 +0000 2010]: Changed location name from ‘Grasslawn Park, King County, WA’ to ‘Grasslawn Park, King Co., Washington, USA’
Images
Comments
Add Comment
In Agaricus the staining reaction and the odor are key features. The very common section Xanthodermati, stain yellow and then turn brown which can sometimes be reddish. The unpleasant taste/odor would be consistent with that group. I don’t know of any Agaricus species that have a red staining pileus and yellow staining flesh.
Created: 2007-06-29 17:02:55 CDT (-0500)
Last modified: 2011-04-05 14:39:29 CDT (-0500)
Viewed: 36 times, last viewed: 2019-01-25 08:46:45 CST (-0600)
It seems to flash yellow, and then slowly turn brown/red. As Arora puts it, “fleetingly lutescent.”