Observation 48118: Megacollybia rodmanii R.H. Petersen, K.W. Hughes & Lickey

When: 2010-07-04

Collection location: Columbia Co., Pennsylvania, USA [Click for map]

Who: Dave W (Dave W)

Specimen available

White context. Stipe solid, surface slightly textured. Taste pleasant. Odor pleasant. No spore print, but did knock a few out for the scope. Spores at 400x in Meltzer’s. Third pic taken using white translucent plastic bag to block strong sunlight. (I have been unable to find a plain white umbrella!)

Streaked cap is very distinctive. I initially though this was T. portentosum, except for three things…

First, the season is way off for portentosum. I see it infrequently around here, and when I do it’s at least mid September. But we have had some notable weather this past week. Two consecutive mornings temps bottomed out in the low 40sF in the area where this mushroom was found. This coming after a season’s worth of hot weather coming during the past 6 weeks. Maybe the soil temp fluctuations have mimicked what generally does not occur until autumn?

Second, this mushroom was found growing from a mixture of humus and leaf litter. Maybe another case of a mycorrhizal spreading it’s mycelium into an unusual medium? Nearby a stream under hemlock.

Third, gills are spaced a bit widely for portentosum.

[admin – Sat Aug 14 01:59:34 +0000 2010]: Changed location name from ‘Columbia County, PA, USA’ to ‘Columbia Co., Pennsylvania, USA



Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
No one has commented yet.

Created: 2010-07-05 13:39:48 EDT (-0400)
Last modified: 2016-02-15 08:32:54 EST (-0500)
Viewed: 62 times, last viewed: 2017-11-20 15:25:50 EST (-0500)
Show Log