2012-09-04 Limacella illinita (Fr. - Fr.) Murrill 258648

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This image was created by user Erik nelson (eriknelson) at Mushroom Observer, a source for mycological images.
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Limacella illinita (Fr. : Fr.) Murrill

Based on spores, clamps, and overall appearance of exsiccata….

…it seems possible we are looking at Limacella sp-CMP0152. We first compared spore measurements from the largest pileus in your collection to all the spore data of section Lubricae (http://www.amanitaceae.org/...). After measuring the default minimum of 20 spores, the following data was obtained: [20/1/1] (4.0-) 4.2-5.5 × (3.0-) 3.1-4.1 (-4.2) μm; Q = (1.20-)1.27-1.44(1.61).

With the use of the WAO sporograph tool we found the closest match to be L. sp-CMP0152, which consequently, is also found in Arizona. The spores of your material are inamyloid, broadly ellipsoid to ellipsoid (rarely elongate), and some were decorated with fine warts. This echinulate appearance was only evident with the use of Nomarski. You will find that L. sp-CMP0152 from Cochise Co. (AZ) was dominantly echinulate and noticeable even without the use of Nomarski.

The macromorphological description of L. sp-CMP0152 was only based on exsiccata, because a good description of the fresh material was not available. So we compared your dried material with the information on WAO (http://www.amanitaceae.org/?Limacella%20sp-CMP0152) and we found them to match well. Some of the characters they share are color of pileus, color of stipe, gill attachment, and shape of lamellulae. Also, there were prominent (kidney-like) clamps at the bases of basidia. In order to observe them, a squash in KOH+Congo Red was necessary.

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This image is Image Number 258648 at Mushroom Observer, a source for mycological images.

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