Observation 241534: Amanita subgenus Amanita

When: 2016-06-12

Collection location: Fredericksburg , Virginia, USA [Click for map]

38.3278°N 77.3597°W 24m [Click for map]

Who: JAngeles

No specimen available

Images

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

= Observer’s choice
= Current consensus

Comments

Add Comment
Are the gills pink?
By: R. E. Tulloss (ret)
2016-06-12 21:19:24 PDT (-0700)

Or this a trick of reflection or refraction?

Very best,

Rod

I think I would prefer more data before making up my mind.
By: R. E. Tulloss (ret)
2016-06-12 21:17:29 PDT (-0700)

I remind myself that I thought Amanita murinoflammeum would fall in sect. Caesareae, and it nows seems to belong to a rather early diverging branch of section Amanita. If we consider the darker colored caps of what might be called the umbrinella group, they are sometimes found on fruiting bodies with graying volvas (e.g., murinoflammeum). There bulbs can be modest (which fooled the pants off me).

I really would like to know more in this case. If JA can dry some of the material, we could apply the tricks of the trade and try to figure out where we could place this interesting critter.

I could be wrong, but I don’t think I’ve seen this one before.

Very best,

Rod

Rod,
By: I. G. Safonov (IGSafonov)
2016-06-12 20:28:43 PDT (-0700)

Based on the photographic evidence, taken collectively, I would go with sect. Caesareae. To begin with, the deep gray color of the cap and the UV remnants it bears seem to points away from sect. Amanita. The structure of the fancy volva is a bit elusive even though the picture is very sharp. I think I can see what looks like a fairly thick saccate volva sitting under the ornate “crown”. The rounded shape of the former is giving an impression of the bulb. The gap between the two structural elements of the volva exposes the stipe wall. What do you think?

That looks like a bulb.
By: R. E. Tulloss (ret)
2016-06-12 19:48:43 PDT (-0700)

However, we probably need to ask JAngeles to cut the mushroom top to bottom down the center of the stem so we can see the cross-section of the stem base. The stem base suggests either sect. Amanita or sect. Caesareae are possible. I think that “sp-MO01” had a roughly obconic base to the stem. This stem looks like it has a globose bulb at the stem base.

JA do you have the material in hand? Do you have a dryer?

Very best,

Rod

Wow!
By: I. G. Safonov (IGSafonov)
2016-06-12 17:02:34 PDT (-0700)

Look at that volva… Is there a bulb hiding under the UV?

Interesting.
By: R. E. Tulloss (ret)
2016-06-12 16:25:36 PDT (-0700)

The universal veil appears to gray and friable. Look at the broken piece on the edge of the partial veil in the second photograph. I’m not sure what this is. Thinking about weakly structured volva in the Caesareae, I remember the one that we’ve had from Missouri and Texas—“sp-MO01”.

http://www.amanitaceae.org?Amanita_sp-MO01

Very best,

Rod

Location missing — please update
By: I. G. Safonov (IGSafonov)
2016-06-12 14:05:21 PDT (-0700)