Observation 127822: Mycena purpureofusca (Peck) Sacc.
When: 2013-02-02

Notes: Found a group of two and two growing solo. Gill edges dark purple.

Spores 10-12 × 6-8 microns. Cheilocystidia 55 × 18 microns.

Maas Geesteranus says that round apices in chelocystidia distinguish M. purpureofusca from M. rubromarginata, whose chelocystidia have narrow necks. He also says that clamps are common in rubromarginata and rare in purpureofusca.
For the record, we have lots of clamps here.

Species Lists

Images

306685
306686
306687
Spores and cheilocystidia.
306688
Band of cheilocystidia.
306689
Stipitipellis: terminal cells.
306690
Stipitipellis: terminal cells.
306691
Pileipellis, 100X.
306692
Pilleipellis, hyphae clamped, diverticulate.
306693
Pilleipellis, hyphae clamped, diverticulate.

Proposed Names

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Comments

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By: Robert Sasata (Sasata)
2013-02-08 11:38:36 PST (-0800)

If clamps are abundant, doesn’t that rule out M. purpureofusca according to Maas Geesteranus? I’m not sure, but wouldn’t “narrow necks” describe the morphology of your pictured cheilocystidia better than “broadly rounded apices”? For comparison, check out these broadly rounded cheilocystidia apices from “Mycenas of Norway”.

(edit)

OK, I see you’ve been through this all before in observation 118711, so don’t worry about trying to explain it to the newbie (me) :-) … just trying to figure things out to write up a Wikipedia page.

Created: 2013-02-05 01:34:39 PST (-0800)
Last modified: 2013-02-08 12:20:51 PST (-0800)
Viewed: 68 times, last viewed: 2016-09-27 20:05:47 PDT (-0700)
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