Observation 57999: Gomphus floccosus (Schwein.) Singer

When: 2010-11-02

Collection location: Yosemite National Park, California, USA [Click for map]

Who: Ron Pastorino (Ronpast)

Specimen available

Collection # YNP1520 for the Yosemite Fungal Survey.
The spore print on these was ochre and the spores were ~ 11.6-14.0 X 5.8-6.1 microns.
These two and another group were growing in clusters.
The combination of characters make them look like a cross between Gomphus floccosus and Gomphus bonarii.
The spores of G. bonarii are somewhat smaller than G. floccosus(according to the Millers’ book) and these fall in the transition zone.
Will be interesting to find out what DNA tells us.

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Used references: North American Mushrooms by Orson Miller and Hope Miller

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Add Comment
floccosus & bonarii
By: Michael Wood (mykoweb)
2010-12-24 12:49:35 CST (-0500)

Admir Giachini synonymizes bonarii with floccosus in his doctoral dissertation:

Giachini, A. (2004). Systematics, Phylogeny, and Ecology of Gomphus sensu lato. Ph.D. Dissertation. Oregon State University: Corvalis, OR. 446 p.

And it’s now Turbinellus floccosus (Schwein.) Earle.

See also:

Giachini, A., Hosaka, K., Nouhra, E., Spatafora, J. & Trappe, J.M. (2010). Phylogenetic relationships of the Gomphales based on nuc-25S-rDNA, mit-12S-rDNA, and mit-atp6-DNA combined sequences. Fungal Biology 114(2-3): 224-234.

These did come out of the ground with very white “gills”
By: Ron Pastorino (Ronpast)
2010-11-05 11:46:46 CST (-0500)
and the camera did overemphasize it a bit. However, they did become more buff-yellow with time and were quite Gomphus vein-like. Gomphus bonarii is a western montane species that has been recognized for some time in Western US field guides. In fact, most locals would have labeled this G. bonarii just on appearance and location. However, i believe that there may be some recent evidence that the two species are very closely related, and perhaps essentially identical.
not terribly orange
By: Danny Newman (myxomop)
2010-11-05 03:04:45 CST (-0500)

unless that’s the photo’s fault. awfully clean, white gills for a Gopmhus too. never heard of G. bonarii. either of these two characteristics common to that species?

Created: 2010-11-04 21:00:54 CST (-0500)
Last modified: 2013-12-03 13:25:22 CST (-0500)
Viewed: 189 times, last viewed: 2018-11-27 19:14:10 CST (-0500)
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