Observation 110224: Hymenopellis furfuracea (Peck) R.H. Petersen
When: 2012-08-20
Herbarium specimen reported

Notes: Single very distinctive and beautiful mushroom standing approximately 4 cm tall. I’m looking for advice based on the microscopy attached. I lack the references for evaluation of micro data. This mushroom was growing singly from the ground under Hemlock. The stem was deeply rooted and I did not think to dig deeper to reveal what it might have been growing from underground. Spores are large (up to 17.5 microns long) with dimensions as follows: 20 spore average = 15.1 × 10.4 microns, Qm = 1.45. The spores have a pronounced hilar appendage and most contain variously sized oil droplets. The spores which are fully filled stain amber in Melzer’s, while others with smaller droplets are nearly clear. All spores photographed were from the spore print and should represent mature spores. The spores seem especially fragile with many ruptured and releasing numerous oil droplets on the slide. Club shaped cystidia are present on the gill surface and some contain droplets which stain strongly orange in Melzer’s.

Species Lists

Images

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Brightfield illumination. The spores which are fully filled stain amber in Melzer’s, while others with smaller droplets are nearly clear.
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DIC illumination. The spores which are fully filled stain amber in Melzer’s, while others with smaller droplets are nearly clear.
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Club shaped cystidia are present on the gill surface and some contain droplets which stain strongly orange in Melzer’s.

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Comments

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Thanks again Noah!
By: Linas Kudzma (baravykas)
2012-09-17 20:22:06 CDT (-0500)

Sure looks like your suggestion of Hymenopellis (or Xerula) furfuracea. I looked it up on-line and from what I quickly found the micro seem to match as well.

Created: 2012-09-17 20:05:59 CDT (-0500)
Last modified: 2016-02-27 18:48:19 CST (-0600)
Viewed: 92 times, last viewed: 2016-07-18 10:03:39 CDT (-0500)
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