Observation 191564: Armillaria (Fr.) Staude
When: 2014-10-10
No herbarium specimen

Notes: -This specimen was associated with the soil, and it was growing near the base of an oak tree.
-The growth of this specimen was scattered.
-There wasn’t a distinctive smell other than wet dirt.
-The diameter of the most mature of my samples was measured to be about 4.0 cm.
-The surface of the pileus looked dull. Also, it felt greasy and smooth to the touch.
-The pileal shape was broadly convex, and the margin was smooth.
-The pileus was a medium brown color, and the flesh was cream colored.
-The light tan stipe was centrally located. When it was measured, it was about 6.0 cm in length and 1.1 cm in width.
-When the specimen was cut in half, it was observed that the stipe was solid and mostly equal.
-The stipe base was inserted/institious.
-On the surface of the stipe, it looked fibrillose and there was some shine.
-The beige gills were adnate and even.
-There appeared to be two lamallae tiers. They were in a crisped pattern.
-I collected both mature and immature samples.
-On the stipe, it was observed that there was some remnants of an annulus on the mature samples.
-I was able to recognize this species by looking at the immature form, which had a cortina type annulus that covered the specimen’s gills.
-I couldn’t obtain a spore print. Under the microscope (40x magnification), the spores were clear, round, and smooth.

Images

488287
Mb80.jpg
Mature form
488286
Mb80.3.jpg
Mature and immature samples
488288
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488289
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Immature form, cortina
488290
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488291
mb80.7.jpg
488292
Mb80 basidia and spores.jpg
Basidia filled with spores
488293
Mb80 spore.jpg
Smooth, round spores

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Created: 2014-12-03 20:19:19 PST (-0800)
Last modified: 2014-12-12 17:55:14 PST (-0800)
Viewed: 24 times, last viewed: 2016-10-23 07:57:05 PDT (-0700)
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