Observation 98652: Astraeus hygrometricus (Pers.) Morgan

When: 2011-09-10

Collection location: Madera Canyon, Santa Rita Mountains, Pima Co., Arizona, USA [Click for map]


Who: Ivan Rodriguez (Ivan Rodriguez)

No specimen available

Occuring in an area rich with white and ponderosa pine. Not attached to ground; could possibly be old as the body is very dry.



Proposed Names

28% (1)
Used references: Mushrooms Demystified.
28% (1)
Recognized by sight: earthstar without peristome
83% (1)
Eye3 Eyes3
Used references: Wikipedia, Mushrooms Demystified.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Much much smaller.
By: Ivan Rodriguez (Ivan Rodriguez)
2012-06-29 18:39:07 EDT (-0400)

12 to 15 cm? That’s huge! No, this one was, to my best guess, between 3 to 5 centimeters, including the rays.

works for me
By: Danny Newman (myxomop)
2012-06-29 18:34:51 EDT (-0400)

I think the only other possibility in the genus would be A. pteridus, which is supposed to be considerably larger (see MycoKey), as in 12-15cm in diam. What was the size of this one?

Astraeus hygrometricus?
By: Ivan Rodriguez (Ivan Rodriguez)
2012-06-29 18:00:45 EDT (-0400)

Matches the Wikipedia image quite well for starters: http://en.wikipedia.org/wiki/Astraeus_hygrometricus

In my guide, it mentions specifically that they are common in Arionza under pinyon pine, and this is exactly the location that it might be found. What do you think?

Will investigate further…
By: Ivan Rodriguez (Ivan Rodriguez)
2012-06-29 17:55:07 EDT (-0400)

I’m grateful once more for the genus suggestion; I’ll try to identify a likely species and see what you and others may think.

Created: 2012-06-29 16:50:20 EDT (-0400)
Last modified: 2012-06-29 17:59:17 EDT (-0400)
Viewed: 32 times, last viewed: 2017-06-13 05:32:24 EDT (-0400)
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