Observation 81573: Otidea (Pers.) Bonord.
When: 2011-11-05
No herbarium specimen

Notes: Spore size 11-13 × 6.5-7 microns.

Proposed Names

46% (4)
Eye3
Used references: MatchMaker
51% (3)
Eyes3
Recognized by sight
-4% (3)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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OK for O. onotica
By: Nicolas VAN VOOREN (NicoV)
2013-01-11 09:20:28 CST (-0500)

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

A preliminary key
By: Irene Andersson (irenea)
2011-11-08 09:36:56 CDT (-0400)

where you may find something is here
http://www.ascofrance.com/uploads/forum_file/6230.pdf

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

By: Danny Newman (myxomop)
2011-11-07 22:00:37 CDT (-0400)

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 17:42:05 CDT (-0400)
Last modified: 2013-01-11 09:18:41 CST (-0500)
Viewed: 87 times, last viewed: 2016-03-31 07:32:19 CDT (-0400)
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