Images

spores ellipsoid to lemon-shaped, thick walled, with prominant hilar appendage and large oil drops.
note long, cylindrical cystidia at gill edge.

Proposed Names

-20% (3)
Recognized by sight: slimy dark brown cap, darker in middle, with striate edge. stipe w. annulus (lost), darkening from bottom up.
Used references: Matchmaker, Mushroomexpert.com, Roger’s Mushrooms
Based on microscopic features: dark brown (almost purple brown ) spore print. ellipsoid spores with prominant apiculus and oil drop (?). spores 9 × 5 and 11 × 7 microns. long cylindrical cystidia: 55 microns in length.

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= Observer’s choice
= Current consensus

Comments

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micrographs added.
By: Debbie Viess (amanitarita)
2011-10-28 10:43:01 CST (+0800)
yeah, this is an uncomfortable ID…
By: Debbie Viess (amanitarita)
2011-10-27 23:12:20 CST (+0800)

some parts fit, some parts don’t. Matchmaker has three different descriptions for this species, perhaps a complex? Online, a few specimens of fungi labeled Agrocybe erebia look similar to this one, but most are quite a bit more stocky and very different looking.

And then, there were those darned oildrops in the spores; what is up with THAT?

Will post the micrographs soon.

Deb
By: walt sturgeon (Mycowalt)
2011-10-27 22:53:50 CST (+0800)