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Created: 2008-10-11 08:08:06
By: Darvin DeShazer (darv)
Summary: East vs West material
Spore size does not match A. augustus, but it does fit A. subrufescens. Bessette, Bessette and Fischer as well as Smith and Weber have a photo that matches the cap AND the shaggy stipe. Dr. Rick Kerrigan says the stipe is “subglabrous above, covered below with short, erect, largely deciduous fibrils” and the “UV also leaving short, erect, deciduous fibrils on stipe from annulus to basal region”. However, his color photos (2) show a smooth stipe.
Like Nathan, I have grown this species from a kit and it had a smooth stipe. Both of Arora’s books show a smooth stipe, so maybe it is an East vs West characteristic. Smith’s guide to Western Mushrooms also shows a shaggy stipe, but he could have used a photo from a different location.
I think this was the original cultivated button mushroom a century ago and for some flavorless reason it was replaced with the button mushroom, A. bisporus. I also seem to recall that Kerrigan made it synonymous it with A. blazei and A. braziliensis, but I could not find the reference to reread the exact details. Maybe someone will know if it is true or not.
Arora, D. 1986. Mushrooms Demystified. Ten Speed Press, Berkeley, CA. 959p.
Arora, D. 1991. All That the Rain Promises, and More…A Hip Pocket Guide to Western Mushrooms. Ten Speed Press, Berkeley, CA. 259p.
Bessette, A., A. Bessette and D. Fischer 1997. Mushrooms of Northeastern North America. Syracuse University Press, Syracuse, NY. 582p.
Kerrigan, R. W. 1986. Agaricaceae. 62p. Thiers, H. D., editor. 1982-1997. The Agaricales (Gilled Fungi) of California. Mad River Press, Eureka, CA
Smith, A. H. 1975. A Field Guide to Western Mushrooms. Univ. of Michigan Press, Ann Arbor, Michigan. 280p.
Smith, A. H. and N. S. Weber. 1980. The Mushroom Hunter’s Field Guide: All Color and Enlarged. Univ. of Michigan Press, Ann Arbor, Michigan. 316p.
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