Amanita insinuans - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita insinuans
name status nomen provisorum
author Tulloss & Kudzma
english name "Baton Rouge Ringed Ringless Amanita"
images

  • 1. Amanita insinuans, showing absence of pronounced umbo in mature mateiral, Baton Rouge, East Baton Rouge Parish, Louisiana, U.S.A.  (RET 685-8)



  • 2. Amanita insinuans, Baton Rouge, East Baton Rouge Parish, Louisiana, U.S.A.  (RET 685-8)


  • 3. Amanita insinuans, showing annulus-like structure on upper stipe, Baton Rouge, East Baton Rouge Parish, Louisiana, U.S.A.  (RET 685-8)

    • odor/taste Odor and taste have not been reported for this species.
    spores The spores of A. insinuans measure (9.0-) 9.8 - 13.0 (-15.0) × (6.3-) 6.4 - 8.4 (-9.6) μm and are inamyloid and ellipsoid to elongate (infrequently broadly ellipsoid).  The basidia lack basal clamps.
    discussion To date, this species is only known in association with Pecan (Carya illinoiensis from Baton Rouge, Louisiana.  It is the first reported taxon from North America with a weakly structure (but fairly persistent) skirt on its stem.  This character has been previously reported on a very few taxa from Africa.  So this critter is a rare bird.  Like all other known "ringed Ringless Amanitas," this species can be assigned to the provisional [subsection Penetratrices] stirps Strobilaceovolvata.—R. E. Tulloss
    brief editors RET

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