Observation 103364: Amanita sect. Lepidella sensu Bas
When: 2012-07-29
No herbarium specimen

Notes: -Found a lot of these Lepidellas fruiting on a ridge today, some in a huge half-ring -mostly under Virginia Pine in mixed woods (which includes Hemlock), although this one was under an oak

-About half of them have very little or no odor. The others have a faint odor -I think “Old Ham” would probably describe it best.

-I have been confused in the past about whether these are A. cokeri or A. subcokeri. A recent picture from another fruiting of these that I labeled A. subcokeri drew a response from RET that “Large, easily removed warts are not typical of A. subcokeri.” I rubbed the warts on the cap of one of these, and sure enough, they do rub off pretty easily.

-I’m also confused about A. subcokeri odor. Would it (could it?) have that odor of old ham? Or, is it typically oderless?

-If it isn’t A. cokeri or A. subcokeri, what are the other possibilities?

Proposed Names

61% (2)
Eye3 Eyes3
Recognized by sight
Based on microscopic features: spores 11 – 15 × 7 – 8 um

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
I’d go for…
By: R. E. Tulloss (ret)
2012-07-31 20:30:20 EDT (-0400)

cokeri.

R

spores and note on reddish stain on bulb
By: Steve Roberts (Mushroom World)
2012-07-31 00:38:11 EDT (-0400)

Rod,

There is definitely a lot of reddish staining occurring -mainly on the scales on the bulb, and sometimes the warts on the cap. We don’t have clay soils on the Cumberland Plateau -the typical soil here is loamy.

I got a really nice spore print -the spores are off-white to pale cream. The spores measure 11 – 15 × 7 -8, which looks like a nice fit for A. cokeri. But, since reddish stains are atypical of A. cokeri, where does that leave us? Hmmmmmm

Steve

Hi, Steve.
By: R. E. Tulloss (ret)
2012-07-30 09:15:19 EDT (-0400)

Large, easily removed warts, double annulus, recurved scales on the bulb, no odor at first (followed by “chlorine”-“old ham” odors in age), would all point to A. cokeri.

The reddish staining on the bulbs might be due to soil (red clay?). If not, then this is a confusing factor because coker doesn’t normally show reddish staining on the bulb (subcokeri often does).

The spore size and shape of the two taxa differ fairly strongly. I can send you a .PNG file comparing the sporographs of cokeri and subcokeri if you’d like to add it to your observation photos.

Their is another taxon that Dr. Jenkins described, A. marginata, which I have never found. Among other things, it should have a cap with a thin layer projecting beyond the ends of the gills for several mm in what was called a “sterile margin”. This taxon has smaller spores than both A. cokeri and A. subcokeri. A sporograph comparison of all three taxa is available on the techtab of this taxon page:

http://www.amanitaceae.org?Amanita+marginata

Very best,

Rod

Created: 2012-07-30 00:31:59 EDT (-0400)
Last modified: 2012-08-29 23:54:24 EDT (-0400)
Viewed: 102 times, last viewed: 2016-02-25 22:56:39 EST (-0500)
Show Log