OMS MOTM, August 2018...Trudell & Ammirati, Mushrooms of the Pacific Northwest (Timber Press 2009)...
Transcript of OMS MOTM, August 2018...Trudell & Ammirati, Mushrooms of the Pacific Northwest (Timber Press 2009)...
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OMS MOTM, August 2018Mushroom of the Month
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Hydnum (in the Pacific Northwest)
© 2012 Alan Rockefeller
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Why?
● Easy to recognize● Good to excellent edible● Bug and mold resistant● No poisonous look-alikes (in the PNW)● Wide distribution● Fall (mostly) and Spring● Good for beginners ● with enough to interest everyone
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PNW guides list two types
● Larger: Hydnum repandum Up to 15 cm (6 inches) or more
● Smaller: Hydnum umbilicatum< 5 cm (2 inches)
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H. repandum top
● Like a chanterelle
● Cap cream to orange brown
● Stem like chanterelle
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H. repandum - bottom
© 2018 Thomas Stoughton
© 2017 Heather Waterman
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H. umbilicatum
● Smaller● Slimmer stem● Often with
bellybutton (= umbilicatum)
© 2018 Ron Pastorino
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H. repandum vs umbilicatum
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Look alikes? -- Hydnellum aurantiacum
© Steve Trudell
● Stemmed● Light
brown cap● White
teeth on bottom
But:Tough, thickDifferent stem & profile
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Look alikes? -- Cantharellus ssp.
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Look alikes? -- Sisotrema confluens
© 2014 Christian Schwarz
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Which of these things is more like the other?
Cantharellus vs Sistroema confluens vs Hydnum
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Partial Phylogenetic Tree
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Ecology
● Now that we can ID it, where should we look?● Ectomycorrhizal (symbiotic with trees)● On ground● Associates (in PNW): Conifers, including Pine,
Hemlock, Spruce, Douglas-fir● Summit to Sea● Similar to chanterelle
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We live in interesting times
Joe AmmiratiLorelei Norvell
New, comprehensive study
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Extensive DNA Analysis
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Some Findings
● More species12 before49 after (per DNA, 22 with descriptions)
● Differences between species can be subtleE.g., spore size
● Distribution restricted at a global scaleOnly 2 both Old & New World
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Distribution of PNW Species
Localized distribution● Hydnum repandum is a European species
Hydnum repandumHydnum repandumHydnum neorepandum
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PNW Species
Hydnum neorepandumHydnum umbilicatum complexHydnum olympicumHydnum subolympicumHydnum melleopallidum
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Hydnum oregonense
● Good name● Type (defining specimen)
~10 miles from Mary’s Peak● By Lorelei Norvell
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Hydnum oregonense
● Fall & spring● Closest PNW relative: H. umbilicatum● “Easily distinguished” from H.
umbilicatum○ Spores 9.5 × 9.0 μm (oregonense)○ vs 8.4 × 8.0 μm (umbilicatum)○ 1/50 width of human hair
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Summary
New study gives a rich, more complicated picture. But no matter what you call them, Hydnum:● Good edible,● Easy to recognize
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References, Credits
Castellano, et al. (2003) Handbook to additional fungal species of special concern in the Northwest Forest Plan, General Technical Report PNW-GTR-572 https://www.fs.fed.us/pnw/pubs/gtr572
Gibson, Matchmaker: Mushrooms of the Pacific Northwest, Version 2.2.1 (2015) (latest version downloadable at http://www.svims.ca/council/matchmaker.htm)
Miller, Pictorial Key to Mushrooms of the Pacific Northwest (version 2.2.155) (2017)
Mushroom Observer https://mushroomobserver.org/
Niskanen et al. (2018): Identifying and naming the currently known diversity of the genus Hydnum with an emphasis on European and North American taxa, Mycologia, DOI: 10.1080/00275514.2018.1477004
Norvell, PNWMS Technical Report: 1998–2005 Green Peak Density Management Fungal Community Study: 2017 updated summary (pdf available on ResearchGate)
Siegel & Schwarz, Mushrooms of the Redwood Coast (Ten Speed Press 2016) (http://www.redwoodcoastmushrooms.org)
Trudell & Ammirati, Mushrooms of the Pacific Northwest (Timber Press 2009)
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Questions?
Thanks for listening!