Observation 281128: Amanita sect. Amanita

For some reason this one attracted my attention after getting tired and annoyed of seeing countless A. velatipes in the area. Perhaps because the cap was very pale cream and gave an impression of a species in sect. Vaginatae. My suspicions were originally reinforced when I saw no PV/annulus and flaps of what I thought were saccate UV limbs sitting just above the ground, but then, as I carefully plucked it from the ground, I saw a small bulb.
This single exemplar was growing in mixed deciduous woods dominated by oaks and maples. The cap is ~round, 4.9 × 5.3 cm wide; marginal striations are ~0.3R max; the stipe is 8.5 cm long from the tip of bulb to the junction with cap, 5 mm wide at the narrowest point, 1 cm wide at flared apex and 7 mm wide near the bulb; the bulb is 1.2 cm tall and 1.5 cm wide. The spores appear to be ellipsoid (e.g., with Q values between 1.3 and 1.6) when viewed as a dry deposit at x400.
This collection was preserved for RET.


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There has been at least one other recent post…
By: Dave W (Dave W)
2017-07-18 10:15:45 PDT (-0700)

of something fitting the description of albocreata, but found in an area devoid of hemlock. (I think maybe Geoff?)

I have found a few examples of a very pale-capped one that appears to represent section Amanita, has a fleeting ring (or may appear to be exannulate), and has ellipsoid spores. Getting around to catching up on my MO posts… busy lately.

By: I. G. Safonov (IGSafonov)
2017-07-18 09:36:18 PDT (-0700)

Not a single conifer around — it’s all oak, maple, beech, hickory and other deciduous trees in this section of the woods.

Were there any conifers at all?
By: R. E. Tulloss (ret)
2017-07-18 09:16:38 PDT (-0700)

Amanita albocreata is most common in hemlock-hardwood forest…in my experience.

Very best,


Herbarium Rooseveltensis Amanitarum (R. E. Tulloss) has received specimen.
By: mcmacher
2017-07-18 09:14:38 PDT (-0700)

We have received the dried specimen. Thank you. It is being accessioned in Rod’s herbarium.

Created: 2017-07-06 20:36:14 PDT (-0700)
Last modified: 2018-01-08 15:56:21 PST (-0800)
Viewed: 58 times, last viewed: 2019-08-20 09:39:19 PDT (-0700)
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