Amanita anthracina - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita anthracina
name status nomen provisorum
author Tulloss & D. P. Lewis
english name "Coal Black Ringless Amanita"
images
  • Amanita anthracina, Big Thicket Nat. Preserve, Texas, U.S.A.Amanita anthracina, Big Thicket Nat. Preserve, Texas, U.S.A.

    1. Amanita anthracina, Big Thicket Nat. Preserve, Texas, U.S.A.

  • Amanita anthracina, Ha Ha Tonka St. Pk., Missouri, U.S.A.Amanita anthracina, Ha Ha Tonka St. Pk., Missouri, U.S.A.

    2. Amanita anthracina, Ha Ha Tonka St. Pk., Missouri, U.S.A.

    • cap The cap is 29 - 36 mm wide, dark gray, nearly black, sometimes virgate, sometimes shiny over the marginal striations, with its context white, unstaining, and about 2 mm thick above the stem.  The marginal striations take up about 40% - 55% of the cap's radius.  Usually, no volval material is present.
    gills The gills are free, close to crowded, whitish to off-white in side view, sometimes becoming grayish white with age, and about 2 mm broad.  The short gills are not plentiful, truncate, of diverse lengths, and unevenly distributed.
    stem The stem is 63 - 85 × 3 - 6 mm, white, becoming sordid from handling, pulverulent in the top 20 (appox.) mm, and, elsewhere, bears very fine raised fibrils (10× lens).  It is also exannulate.  The volva is white on the exterior, sack-like, membranous, barely attached at the stem's base, and sometimes easily and entirely separable from the stem.
    spores The spores measure (8.5-) 9.5 - 12.5 (-13.5) × (7.0-) 7.3 - 9.0 (-11.0) µm are broadly ellipsoid to ellipsoid (infrequently subglobose or elongate) and inamyloid.  Clamps are not to be found at the bases of basidia.
    discussion This species has been found from the sandy pine-oak woods of eastern Texas (USA) to as far north as Ha Ha Tonka St. Pk., Missouri(USA).  This species was formerly known as "Amanita sp-T10" on this site.—R. E. Tulloss
    brief editors RET

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