Observation 20993: Pseudobaeospora Singer

University of Tennessee Knoxville Herbarium specimen.
Collected by E. Lickey
Description by E. Lickey:

“1 Fruitbody under mixed hardwoods and hemlock canopy
Pileus convex, 10 mm broad, “dull deep violet blue” (18D4)
Lamellae “deep grayish lavender” (18C3), close, attached
Stipe 1.5 mm broad, 25 mm long, “dusky blue violet” above (18F8)
fading to whitish at base."

Except for the abundant erect elements on the pileipellis, this taxon is a rather good match for Singer’s “Prunulus syringeus” aka Pseudobaeospora murrillii (Horak), as described by Desjardin, based on his collections of material referable to Coker’s (1929) concept of the former species.

Pileipellis A cutis of hyphae 3.8 – 5 microns wide, in one section with many erect elements 24-80 × 3-6 microns. Dingy yellow in KOH (3%).

Cheilocystidia absent.

Clamps abundant.

Spores smooth, partial population dextrinoid, globose to subglobose to broadly ellipsoid, 3.7 × 3.5 microns, Q = 1.0 -1.3

Caulocystidia 12-50 × 3-5 microns. Scattered at stipe apex, clamped, cylindrical to clavate to slightly sinuous or cylindrical and weakly capitate.

[admin – Sat Aug 14 01:59:00 +0000 2010]: Changed location name from ‘Caldwell Fork Trail, Cataloochee Cove, Waynesville, Haywood CO., North Carolina, USA’ to ‘Caldwell Fork Trail, Cataloochee Cove, Waynesville, North Carolina, USA


Copyright © 2005 University of Tennessee Knoxville.
Image from the University of Tennessee Knoxville Herbarium Website.
Copyright © 2005 Christian F. Schwarz
Pileipellis in KOH
Copyright © 2005 Christian F. Schwarz
Caulocystidia and spores.

Proposed Names

85% (1)
Eye3 Eyes3
Recognized by sight: Violaceous colors
Based on microscopic features: Very small subglobose spores
Based on chemical features: Partially dextrinoid spores

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Nice work, Christian
By: Martin Livezey (MLivezey)
2016-10-23 03:09:47 WIB (+0700)
By: Debbie Viess (amanitarita)
2016-10-23 02:37:11 WIB (+0700)

those doubts were lost!

By: Christian (Christian Schwarz)
2009-06-08 05:54:41 WIB (+0700)

Pseudobaeospora is a genus where no amount of homework can replace actual experience. Many of the species-level differentiators are relative, so familiarity with other taxa is important.
Additionally, the pileipellis appeared to have some erect elements as opposed to a simple flat cutis.

Why the doubt?
By: Nathan Wilson (nathan)
2009-06-08 05:44:07 WIB (+0700)

Seems like you’ve done all your homework on this one. Why do you doubt your genus id and only say it’s promising?

Created: 2009-05-14 02:26:44 WIB (+0700)
Last modified: 2011-05-06 21:22:15 WIB (+0700)
Viewed: 164 times, last viewed: 2018-02-23 03:10:01 WIB (+0700)
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