Mushroom Observer: Observation: Leucoagaricus barssii (6860)

Introduction
How To Use
How To Help
Send a Comment

Index A->Z

Latest:
  Changes by Users
  Images
  Comments
  Features and Fixes

Observations:
  Create Observation
  Sort by Date

Species Lists:
  Create List
  Sort by Date
  Sort by Title

Account:
  Login
  Create Account

Contributors
Site Stats

Colors from Agaricus

Powered by:
Ruby on Rails
Preferred browser:
FireFox

Observation: Leucoagaricus barssii (6860)

When: 2008-02-23
Collection location: Mountain View, Santa Clara Co., California, USA [Click for map]
Who: (Alan Rockefeller)
Herbarium specimen available

Notes: Unpleasant odor, kind of hard to describe, kind of like a rodent cage. Free gill attachment. Interesting notched gill edges, though I was not able to find any cheilocystidia. The stipe has brownish stains and a skirt like annulus. Spores smooth and thick walled.

It was growing near some Juniper bushes in leaf litter.

Proposed Names: Propose New Name

Proposed Name	User	Community Vote
*Amanita sp.*	nathan	(4)
Recognized by sight: It’s hard to tell for sure from the photos if there’s a volva of any sort, but it looks like there could be. Lepiota sensu lato is possible, but it seems too robust for that and it generally strikes me more as an Amanita. One possibility is Arora’s “Anonymous Amanita” (see Observation 4172).
*Amanita novinupta* Tulloss & J.E. Lindgr.	nathan	(4)
Recognized by sight: Is that a rufescent stain I see on the lower part of the cut stipe? The cap color is a little bit unusual but not completely out of whack.
*Leucoagaricus barssii*	Alan Rockefeller	(2)
Recognized by sight Based on microscopic features: Smooth spores Based on chemical features: Dextranoid spores

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

= Observer's choice

= Current consensus

Vote	Score		Weight		Users
User's votes are weighted by their contribution to the site (log10 contribution). In addition, the user who created the observation gets an extra vote.
I'd Call It That	3		0.00		0
Promising	2		4.77		1
Could Be	1		5.47		1
Doubtful	-1		2.95		1
Not Likely	-2		0.00		0
As If!	-3		4.79		1

Overall Score sum(score * weight) / (total weight + 1)		-0.12		-4.02%

Vote	Score		Weight		Users
User's votes are weighted by their contribution to the site (log10 contribution). In addition, the user who created the observation gets an extra vote.
I'd Call It That	3		0.00		0
Promising	2		0.00		0
Could Be	1		0.00		0
Doubtful	-1		2.95		1
Not Likely	-2		4.77		1
As If!	-3		10.26		2

Overall Score sum(score * weight) / (total weight + 1)		-2.28		-75.99%

Vote	Score		Weight		Users
User's votes are weighted by their contribution to the site (log10 contribution). In addition, the user who created the observation gets an extra vote.
I'd Call It That	3		5.47		1
Promising	2		4.79		1
Could Be	1		0.00		0
Doubtful	-1		0.00		0
Not Likely	-2		0.00		0
As If!	-3		0.00		0

Overall Score sum(score * weight) / (total weight + 1)		2.31		76.94%

Comments: Add Comment

Created: 2008-02-27 10:37:25
By: debbie viess (amanitarita)
Summary: Leucoagaricus sp.

Sorry gang, those spores are dextrinoid! No evidence of a universal veil, either. Faked me out too, tho. Thanks to Dimi for pointing me in the right direction. Wishful thinking is a powerful thing! it does explain why the mushroom didn’t appear to be mycorrhizal, tho…duh! it’s a saprobe!

I’m saving it for you, Else!

Created: 2008-02-26 10:26:45
By: (Alan Rockefeller)
Summary: pileipellis

11688 and 11689 were duplicate images. The correct images are 11688 and 11813, both showing the pileipellis at 100x, stained with methylene blue. If you click on the images there are comments on each picture that say what the microscopic ones are, but that are hard to see unless you are looking for them.

Created: 2008-02-24 11:23:23
By: (Alan Rockefeller)
Summary: base slightly bulbous

It has a slightly bulbous base. Growing near a Juniper and an ornamental olive tree with very bitter olives. Roots were seen touching the mycelium, probably from the bitter olive tree.

Created: 2008-02-23 15:27:46
By: debbie viess (amanitarita)
Summary: What about the stipe base?

Not clear from the photo, but it looks like Allen’s amanita has a bulbous base; if so, this is not a prairiicola, but may well be one of the non-mycorrhizal lepidellas, which is very cool. ;)
The slightly pigmented, warty cap does fit prairiicola, tho.
Ah, fungal odors…I used to keep mice, and I know just the smell you’re talking about. Yum…

Take us there on a field trip, Allen! We wanna see more! I’ll be down that way tomorrow am…

Created: 2008-02-23 09:36:01
By: debbie viess (amanitarita)
Summary: Amanita sp., section lepidella

Rod agrees. Not a novinupta. Most likely an unnamed sp. of lepidella.

Created: 2008-02-23 08:16:00
By: debbie viess (amanitarita)
Summary: Amanita sp.

Curious beastie. Pilipelus appears red-brown under the volva, but doesn’t strike me as a novinupta. Perhaps its a member of the lepidella group. With these very fresh specimens, a strong unpleasant odor doesn’t fit our Western Blusher, and the volva at the base doesn’t seem quite right either, tho my collections have shown quite a bit of variability, from a close cup to nothing at all. And under juniper! I will send this link to Rod, perhaps he can make some sense of it. Stick it on the dryer, Alan, if you haven’t already!

Observation created: Sat Feb 23 00:23:46 -0800 2008
Last modified: Wed Feb 27 22:29:53 -0800 2008
Show Log

Images:

Leucoagaricus barssii (11674)