Observation 118845: Agaricus L.

When: 2012-09-20

Collection location: Merrillville, Indiana, USA [Click for map]

Who: Danielle B. (dbly)

No specimen available

-single specimen growing in the soil

-pileus was dry and broadly parabolic, measured 44mm in diameter, smooth surface with squamous scales, rolled margin, pileus color tan with brown scales

-free even gills, tan in color (29mm in length) regular lamellulae present (>1mm apart in spacing), extremely crowded

-annulus present

-dry/silky light tan/off white stipe, smooth surface, stuffed stipe, bilbous base, 101mm in length, 11mm in width, inserted base

- no volva

-taken from gill spore shape was amydaliform shape

- spore measurements (length/width) (in micrometers) I tried to include the one of the largest and smallest spores I could find along with the majority of the same sized spores that I found. Measured with an 100x oil immersion objective.

1. 7.47/4.15
2. 5.81/3.32
3. 6.64/3.32
4. 6.64/3.32
5. 6.64/3.32
6. 6.64/3.32
7. 6.64/4.15
8. 6.64/3.32
9. 7.47/4.15
10. 6.64/3.32

range (6.64-7.47) and (3.32-4.15)

Proposed Names

28% (1)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
yes! just noticed the stipe…
By: Nimmo (barky)
2012-12-06 13:41:34 CST (+0800)

you’re right the prince for sure has a shaggy stipe. and usually a ring/veil remnant.

The princess is new to me, i’m going to look it up now… :)

sounds awesome
By: Danielle B. (dbly)
2012-12-06 13:33:45 CST (+0800)

I did look it up the prince (agaricus augustus) in my guide it does match up with the characteristics of free gills, brownish colored gills, the scales and color of the cap, the chocolate brown spores, but the spore size is a little smaller ( 7.5-10 X 5-6) microns.. maybe because it was a younger specimen. The stipe was smooth which doesn’t match up perfectly. However the spore size for the princess argaric is (6.5-7.5 × 4-5 microns) and sometimes has a smoother stipe.

I understand
By: Nimmo (barky)
2012-12-06 13:15:18 CST (+0800)

I was only asking because i was salivating :) The pileus strongly resembles the Prince agaric which grows around here (Berkeley, CA) . The distinctive indicator is a pleasant almond aroma.

The prince is one of the tastiest mushrooms I’ve ever had, but I don’t know if it grows in the great lakes area. Hate for anyone to miss the chance to taste that.

By: Danielle B. (dbly)
2012-12-06 13:08:38 CST (+0800)

I tried my best to with all of the specimens in my collection, but with practically everyone I became very congested and stuffed up when working with them. For this one I could not find a distint odor.

Did you smell?
By: Nimmo (barky)
2012-12-06 13:03:05 CST (+0800)

Created: 2012-12-04 12:56:18 CST (+0800)
Last modified: 2012-12-04 13:29:22 CST (+0800)
Viewed: 43 times, last viewed: 2017-10-05 19:51:58 CST (+0800)
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