Observation 13227: Inocybe sensu lato (Site ID) (Inocybaceae)

When: 2008-10-25

Collection location: Larch Mountain, Multnomah Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available

Conical, striate cap, mostly brown with white flesh peaking thru the cracks, cap about 2 inches tall by itself; stipe: at least 8 inches long, rooting deepling in duff, striate; no base found although I dug quite deep as I thought it might be a totally different species of Phaeaocollybia (which I was actually looking for). Pretty sure about Entoloma, with cinnamon-brown spore print. In a nearly pure Western hemlock stand, with some Douglas fir. No hardwoods present, except for an occasional Vine maple, and I didn’t notice any maple near (20 feet distant) with this particular specimen. I sliced the stipe in two for easier drying, and after several hours the central portion of the stipe began to turn pinkish. Aurora is curiously lacking in identification of Entolomas. Looked in Mushrooms of Northwest North America as well, didn’t find a good Entoloma match. Have now gone through most of my reference books, and have not found a good match in either Entoloma or Conocybe. So I’m going to revert back to the Agaricaceae appellation.


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Add Comment
Agree with I. sororia group
By: Daniel B. Wheeler (Tuberale)
2008-10-29 12:22:08 CST (-0500)

But I don’t believe this is I. sororia. This is a mammoth Inocybe compared to what I typically find, and is the first Inocybe with such a long rooting stipe. The stipe by itself is the most bothersome aspect to this collection.

I. sororia group
By: Darvin DeShazer (darv)
2008-10-28 23:04:38 CST (-0500)

I think Noah is right. Something in the I. sororia group. Did it smell strongly of green corn?

How about an Inocybe?
By: Noah Siegel (Noah)
2008-10-28 19:31:49 CST (-0500)

the cap looks like I. rimosa or I. sororia