Observation 295857: Postia caesia group

When: 2017-10-26

Collection location: Turkey Point, Ontario, Canada [Click for map]

Who: Eva Skific (Evica)

No specimen available


Proposed Names

10% (2)
Recognized by sight
83% (1)
Recognized by sight: P. caesia doesn’t occur in NA. There are 24 species in the complex of which 7 are documented from in NA.
Used references: Miettinen et al. 2018

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= Observer’s choice
= Current consensus


Add Comment
Since a recent study shows that Postia caesia does not occur in NA
By: Terri Clements/Donna Fulton (pinonbistro)
2018-12-01 09:33:55 PST (-0800)

but 20 species in the complex do I thought that that information would be of interest to observers. If you are interested in finding out which species you have the paper has a morphological comparison table.

By: Eva Skific (Evica)
2018-12-01 07:54:25 PST (-0800)

thank you for this post i couldn’t not say it better

See my recent post #348220 as Postia livens which looks similar to yours…
By: Bill (boletebill)
2018-12-01 07:48:37 PST (-0800)

…and I chose that name based on the study which seems to suggest that name for the big, blue, hairy Postia species of NE NA. But I do share your feelings about others changing the name you post under without explanation and THAT is why I have stopped posting for years here on MO but recently I have decided it’s simply a good place to keep track of my observations no matter what name gets used

By: Eva Skific (Evica)
2018-12-01 07:40:29 PST (-0800)

did you posted

i know this
By: Eva Skific (Evica)
2018-12-01 07:36:44 PST (-0800)

Thank you Bill

why not change all the observations with this name


live them alone until we know real names for N. American “postia”

Portia caesia
By: Ou812
2018-12-01 07:31:32 PST (-0800)

I believe I had found this yesterday in Attleboro, MA. It was saturated in blue and stained blue somewhat and the blue was very vivid when I squeezed it. It was growing on a Conifer log. Possibly a Redwood.

a new paper does a multigene phylogenetic analysis of the Postia caesia group…
By: Bill (boletebill)
2018-12-01 07:18:21 PST (-0800)

…and they come up with about 20 species so maybe that’s the resoning behind the name chagne on MO

some times
By: Eva Skific (Evica)
2018-12-01 07:13:08 PST (-0800)

I do not know what to say about changes to my OBS

Jealous, very jealous ;)
By: Heather Waterman (ripkord)
2017-10-26 17:09:52 PDT (-0700)
Gorgeous! What a special find.
By: Judi T. (AvidAmateur)
2017-10-26 15:35:45 PDT (-0700)

Created: 2017-10-26 15:16:37 PDT (-0700)
Last modified: 2018-12-01 09:33:55 PST (-0800)
Viewed: 93 times, last viewed: 2019-11-16 16:50:20 PST (-0800)
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