Amanita huijsmanii - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita huijsmanii
name status nomen acceptum
author F. Massart & Rouzeau
english name "Huijsman's Ringless Amanita"
images

  • 1. Amanita huijsmanii, Serra de Montejunto, Portugal.   (RET 650-10)

  • Amanita huijsmanii, southwestern France.Amanita huijsmanii, southwestern France.

    2. Amanita huijsmanii, southwestern France.



  • 3. Amanita sp-ITAL03, Pistoia, TOSCANO, ITALY.  (RET 658-9)


  • 4. Amanita sp-ITAL03, Pistoia, TOSCANO, ITALY.  (RET 658-9)


  • 5. Amanita sp-ITAL03, Pistoia, TOSCANO, ITALY.  (RET 658-5)

  • cap The cap of A. huijsmanii is 45 - 60 mm wide, subcampanulate at first, then convex, with a distinct broad umbo in some specimens, dry, with a strongly striate margin (25±% of the radius); the cap is metallic gray, occasionally slightly darker in the disc. The volva is usually absent.
    gills The gills are free, not too close, white with a flesh-cream tone in mass in mature specimens, and rounded at the cap margin. The short gills are truncate at a right angle or at a slight slant.
    stem The stem is 55 - 120 × 7 - 10 mm, white, narrowing slightly and evenly upward, ornamented with fine white fibrils, and exannulate. The flesh is white and hollow. The volva is membranous, white, and often completely lacking an internal limb.
    spores The spores measure (8.5-) 10.1 - 12.8 (-15.0) × (6.5-) 7.0 - 9.8 (-10.9) µm and are inamyloid and broadly ellipsoid to ellipsoid (infrequently subglobose, infrequently elongate, rarely cylindric). Clamps are rare or absent at bases of the basidia.
    discussion Amanita huijsmanii was originally described from France. It is known from Europe—at least from Portugal to Croatia and north to Germany.

    For comparison, see A. argentea Huijsman, A. mairei Foley, and A. supravolvata Lanne.—R. E. Tulloss
    brief editors RET

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