Observation 20929: Pseudoplectania nigrella (Pers.) Fuckel
When: 2009-05-08
Herbarium specimen reported

Notes: Between 1 and 3 cm wide, rubbery, minutely brown tomentose-hairy outside, no stipe visible.

Spores 8 per ascus, round, no oil drop; paraphyses simple, tips rounded and not enlarged, unpigmented. Spores about 10-11 µm in diameter.

Pseudoplectania nigrella has paraphyses that branch at the tips according to Fungi of Switzerland. Sure is close, though.

Species Lists

Images

43145
43193
Hairy outer surface, at 30×.
43194
Asci and paraphyses, in water, at 400×.
43195
Spores, in water, at 1000×.

Proposed Names

44% (2)
Eye3
Used references: Arora’s “Mushrooms Demystified”

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Errata by Baral in 2001
By: Darvin DeShazer (darv)
2010-07-08 12:57:23 PDT (-0700)

For what it’s worth: The eleven page list of corrections and updates to Vol 1 of the Swiss series does NOT make any changes to Pseudoplectania nigrella. They reexamined the herbarium material and left the book entry as originally written.

not at high elevation
By: Jason Hollinger (jason)
2010-07-08 09:57:16 PDT (-0700)

on a mossy log beside a trail near the house, about 2000’ elevation.

I think the round spores might be the determining factor…
By: Debbie Viess (amanitarita)
2010-07-07 22:24:41 PDT (-0700)

for Pseudoplectania nigrella.

branched paraphyses?
By: Robert Sasata (Sasata)
2010-07-07 20:27:43 PDT (-0700)

Contrary to what’s written in Fungi of Switzerland, none of my sources mention branched paraphyses for this species. For example, Tylutki (1979) in Mushrooms of Idaho and the Pacific Northwest, pp. 25-26 says “Paraphyses filiform, anastomosing, the tips embedded in a brown amorphous matrix, up to 4 µm wide.” The same source also says that the spores are elliptical, measuring 22-30 × 10-14 µm. Were these specimens at an elevated location?

Created: 2009-05-09 13:29:55 PDT (-0700)
Last modified: 2009-05-09 13:29:55 PDT (-0700)
Viewed: 95 times, last viewed: 2017-06-05 20:31:23 PDT (-0700)
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