Observation 81573: Otidea (Pers.) Bonord.

When: 2011-11-05

Collection location: Gifford Pinchot National Forest, Skamania Co., Washington, USA [Click for map]

Who: Sava Krstic (sava)

No specimen available

Spore size 11-13 × 6.5-7 microns.

Species Lists



Proposed Names

46% (4)
Used references: MatchMaker
50% (3)
Recognized by sight
-4% (3)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
OK for O. onotica
By: Nicolas VAN VOOREN (NicoV)
2013-01-11 06:20:28 PST (-0800)

The size and spore shape confirm O. onotica. O. concinna has smaller spores.

A preliminary key
By: Irene Andersson (irenea)
2011-11-08 05:36:56 PST (-0800)

where you may find something is here

But I’m waiting for a new Otidea monography, hope to see it published next year..

By: Danny Newman (myxomop)
2011-11-07 18:00:37 PST (-0800)

Just ran through the PNWKC key, Swiss 1 and Eric T. Peterson’s 1998 masters thesis on Otidea in the PNW. Two of the three confirm the presence of pinkish blushing against a cream-yellow background for O. onotica (Swiss 1 doesn’t list it). The two-dropped spores and unstaining asci are good characters for the genus, but it’s some other sp.

Two important characters for narrowing down potential spp. in Peterson’s key are:

stipitate vs. substipitate or sessile
presence of absence of basal mycelium/tomentum.

A possible match with what info is here so far is O. concinna, primarily on the basis of concolorous hymenium and abhymenium, general shape and spore size.

Created: 2011-11-06 13:42:05 PST (-0800)
Last modified: 2013-01-11 06:18:41 PST (-0800)
Viewed: 92 times, last viewed: 2017-06-10 00:39:57 PDT (-0700)
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