Observation 7293: Contumyces rosellus var. vinacea
When: 2008-04-12
Herbarium specimen reported

Notes: Collected and dried 28 fruiting bodies. They were growing in damp, shady soil under Rubus and Corylus cornuta with moss and low growing plants. Spore print was white. Spores 9-10 µm
Collection # DD636

There might be two names for this fungus. It seems to be a perfect fit for the keys and the descriptions by both Bigelow and Gregory. Redhead dismisses all species in Bigelow, but fails to state why this one does not match. When I asked Denise Gregory about this species she wrote “Hi Darvin, I don’t believe that Clitocybe scabriuscula is truly a Clitocybe, even though I have it listed in my monograph.” After doing a literature search it seems that Clitocybe scabriuscula has NOT been moved to Omphalina, Contumyces or anything else. It currently remains Clitocybe scabriuscula on both Zip Code Zoo and Index Fungorum and does NOT appear in any Omphalina key, including the lengthy keys in Moser (33 species) or Hanson (27 species). Bigelow keys out at least 45 species of omphalinoid Clitocybes in his book but does NOT include Omphalina rosella.
On the other hand, the two color photos in Antonin and in Dahncke are an excellent fit. The description in Redhead, supported by the opinion of Dr. Desjardin, strongly supports Contumyces rosellus var. vinacea.
Following each reference is a germane comment for this collection.

Species Lists

Images

12619
12620
Young, damp cap unexpanded.
12621
Cap starting to dry out.
12622
Young cap drying out.
12623
Mature cap with granules of pink pigments.
12624
Mature cap drying out and the margin turning white.
12625
Six mature caps with the margin drying out to white.
12626
Gills white.
12627
Gills subdistant and thick, margin white when young and damp.
12628
Gills with insect larvae.
12629
Gills starting to turn pinkish.
12630
Gills turning pinkish and a pruinose apex on the stipe.
12631
Marginate gills with pinkish color.
12632
Gill attachment to the stipe.
12633
On the stipe are clusters of cystidia and granules of reddish pigments.
Best seen when viewed on FULL SIZE.
12634
Lateral and terminal pileocystidia projecting from the pileipellis.
12635
Two photos in a row taken with light and dark field to show the same clamp connections on the hyphae of the pileipellis.
12636
Two photos in a row taken with light and dark field to show the same clamp connections on the hyphae of the pileipellis.
12637
Fascicles of caulocystidia on the stipe. Image taken with phase objective at 200X to show the 3-D relief of the hyphae.

Proposed Names

92% (2)
Eye3 Eyes3
Recognized by sight: Color photo online
Used references:
Antonín, Vladimír and Machiel E. Noordeloos. 2004. A Monograph Of The Genera Hemimycena, Delicatula, Fayodia, Gamundia, Myxomphalia, Resinomycena, Rickenella, and Xeromphalina (Tribus Mycenae sensu Singer, Mycena excluded) In Europe. IHW Verlag, Eching. 279p. (Color photo of Contumyces rosella and full description with micodrawings; only three species listed)
Based on microscopic features: Spores 9-10 µm
Clamps found almost everywhere.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2008-04-12 16:38:20 PDT (-0700)
Last modified: 2008-04-12 16:38:20 PDT (-0700)
Viewed: 65 times, last viewed: 2016-12-01 12:36:17 PST (-0800)