Amanita fulva unsequenced specimens corral - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita fulva—unsequenced_specimens_corral
english name "American Orange-Brown Ringless Amanita"
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  • Amanita amerifulva, Sussex Co., New Jersey, U.S.A.Amanita amerifulva, Sussex Co., New Jersey, U.S.A.

    1. Amanita amerifulva, Sussex Co., New Jersey, U.S.A.

  • Amanita amerifulva, Bloomingdale Bog, Franklin Co., New York, U.S.A.Amanita amerifulva, Bloomingdale Bog, Franklin Co., New York, U.S.A.

    2. Amanita amerifulva, Bloomingdale Bog, Franklin Co., New York, U.S.A.

    • intro
    This page serves as a temporary repository for collections that cannot be sequenced or that have not yet been sequenced.

    At present, we expect most of the collections listed on this page to be placed in one of the following taxa: A. carolinensis, A. fulva—North_American, A. sp-amerifulva01, or A. sp-amerifulva02.
    cap The cap of A. amerifulva is 45 - 60 mm wide, fulvous to grayish orange to brownish orange to orange brown, slightly darker (dark fulvous) over disk, and unchanging when bruised or cut.  The cap is campanulate at first; it becomes convex and then planoconvex with a broad umbo.  The flesh of the cap is white to pale cream, sometimes with fulvous tint in the upper part or just near the cap's skin.  It is mostly unchanging when bruised or cut.  The cap margin is striate for one-third to one-half of the cap's radius, sometimes splitting, and nonappendiculate.  Volval remnants are almost always absent.
    gills The gills are free to occasionally narrowly attached to the stem, subcrowded to crowded, white to pale cream to cream to very pale orangish or yellowish cream when viewed in mass and white to off-white to pale cream to cream in side view, unchanging when cut or bruised, with their edges minutely decorated.  Short gills are truncate to subtruncate to truncate with attenuate tooth at pileus context, plentiful, of diverse lengths, unevenly distributed, and occasionally connected to stem rather than to the cap margin.
    stem The exannulate stem is 90 - 124 × 7 - 8 mm, white to cream to pale yellowish to very pale fulvous, occasionally darkening slightly from handling (especially with surface fibrils becoming fulvous or darker); the stem narrows from bottom to top, and may flare (but only very slightly) at the top.  The stem's flesh is white to off-white to slightly orangish white; and there may sometimes be rusty spots in the very base of the stem; it is hollow with a lining or occasional cross walls of white cottony fibrils.  The volva at the stem's base is saccate, membranous, soft, rather firm, and white; it develops ochraceous or rusty or grayish orange (6B6) tinges (at first in the upper part of the limb, then spreading downward) and occasionally becomes entirely grayish orange.
    odor/taste The odor is faintly fungoid or indistinct to absent.  The taste has not been recorded.
    spores The spores measure (8.0-) 9.2 - 12.0 (-14.0) × (6.8-) 8.8 - 11.2 (-12.5) µm, are globose to subglobose (occasionally broadly ellipsoid) and inamyloid.  Clamps are absent from bases of basidia.
    discussion This species is the one most commonly (and incorrectly) referred to Amanita fulva in Northeastern North America—it is very common throughout the eastern United States and southeastern Canada.

    It is found in many forest types.  Among its possible ectomycorrhizal associates are pine (Pinus), Canadian hemlock (Tsuga canadensis), birch (Betula), red oak (Quercus rubra), basswood (Tilia). American beech (Fagus grandifolia), and spruce (Picea).  Occasionally, mushrooms of this species are found in very rotten wood of old stumps through which the fungus has grown upward from surrounding soil.  Tolerance for wet conditions is indicated by one collection's having been collected in a cranberry bog.
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