Observation 50611: Conocybe siennophylla (Berk. & Broome) Singer
When: 2010-08-09
Herbarium specimen reported

Notes: Under mixed hardwood forests, mostly oak and beech.

Adding micro-details:

The first micro-shot is of the gill edge at 400x in Meltzer’s. The cheilocystidia here are lecythiform, so this really is a Conocybe. Also no pleurocystidia were obs., and the basida were 4-spored.

The second micro-shot is of the cap surface at 400x in Meltzer’s. The cap is a hymeniderm, with no gelatin or pileocystidia obs.

The third micro-shot is of the upper stipe surface at 400x in KOH. Here, I guess if you know what to look at…, the caulocystidia are obs, and are fairly random. Some globose, some wavy lageniform, and some filiform. No lecythiform caulocystidia were obs.

The forth micro-shot is of spores on the stipe at 1000x in KOH. The spores are ellipsiod, smooth, tan, with a germ pore. The apr. size was 9.5 × 6 um.

Putting this together, with the cap surface and the cystidia it is clearly a Conocybe. With the random caulocystidia, and then the medium spore size (for a Conocybe), and the 4-spored basidia, you get Conocybe sienophylla. At least according to the Flora Agaracina Neerlandica vol. 6.

Proposed Names

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Based on microscopic features: As described in the text.

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Comments

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The name…
By: Douglas Smith (douglas)
2010-08-26 23:23:16 CEST (+0200)

The name here is C. siennophylla, with two n’s, and it is also that way on Index Fungorum. But in Flora Agaracina Neerlandica, on p163 it is C. sienophylla, with one ‘n’. I’m too tired right now to track down which might be correct…

Also the author here for this name includes the years. I thought the accepted way to do this on this site was to have the author names without the years, and have the year info in the citation info for the name. So, maybe that should get fixed also?

Created: 2010-08-18 13:54:45 CEST (+0200)
Last modified: 2010-08-26 23:19:48 CEST (+0200)
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