Observation 67328: Amanita sect. Vaginatae sensu Zhu L. Yang
When: 2011-05-12
No herbarium specimen

Notes: 5-12-11
Rowan Co., North Carolina
USA

Habitat:
Growing alone, from soil, near the base of a Pinus virginiana, in a small stand of Pinus virginiana, in mixed but predominantly hardwood forest.

Pileus:
3.8cm broad, Convex, Umbonate, Marginally Striate (70-80mm), Gray to Gray-Brown, Smooth, Moist. Universal veil remnants as white patch of tissue. The universal veil remnants appeared to be “sliding” off of the cap.

Lamellae:
Free, Close, White

Stipe:
8.5cm long, Apex: .5cm, Base: 1.3cm wide, enlarging gradually down to base, Smooth, Hollow, White to off-white
Tissue covers around 3cm of the base of the stipe. The next 2cm up appeared minutely hairy (but it wasn’t until I got back to the house that I noticed this. The minutely hairy area seemed to be only where I held/handled the mushroom.)

Basidia:
Appear to be 4-sterigmate

Images

145835
145836
145837
145838
145839
Near the base of a Pinus virginiana
145840
Small Stand of Pinus virginiana in a predomninantly hardwood area
145841
Opposite direction of the above photo
145842
Stipe: Showing universal veil remnants and the “minutely hairy” area I mentioned in the notes
145843
145844
Basidium 1000x (1.15μm per division)
145845
midsection of the same basidium as in the above photo
145846
base of the same basidium in the photo above
145847
Basidium 1000x in Lactophenol Cotton Blue
145848
5% KOH on cap surface – No color change was noted

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Created: 2011-05-13 09:31:29 PDT (-0700)
Last modified: 2011-05-15 20:30:07 PDT (-0700)
Viewed: 39 times, last viewed: 2016-03-29 22:51:37 PDT (-0700)
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