Amanita barrowsii - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita barrowsii
name status nomen provisorum
author A. H. Sm. ex Tulloss
english name "Barrows' Ringless Amanita"
intro Amanita barrowsii is an unpublished name for a probably good species known from aspen or aspen-conifer forest at elevations of about 3000 m in some mountains of New Mexico.  At least four collections thought to represent this mushrom were made by Charles Barrows and are deposited in the herbarium at the University of Michigan, Ann Arbor.
cap The cap of A. barrowsii is 60 - 120 mm wide and orange, fading to dull orange, viscid when moist, with a metallic sheen [probably a result of drying], and unchanging when cut or bruised.  The mature cap is broadly bell-shaped to roughly flat (with an umbo) or broadly convex.  The color of the cap's flesh was not reported, but it is said to be unchanging when cut or bruised. The cap's margin is nonstriate or only very slightly striate (up to about 5 mm long) and nonappendiculate.  The cap usually lacks volval remnants.
gills The gills are free, close, white with a warm orange tone, and unchanging when cut or bruised.  Gill edges are pallid and crenulate.  No information has been reported about short gills.
stem The ringless stem is 100 - 180 × 10 - 20 mm, pallid to buff and drying slightly paler than the cap, narrowing upward, and having its base buried 50 - 80 mm in duff and soil.  Sometimes there is floccose material to be found near the top of the stem.  Nothing was recorded about the stem's flesh.  The volva is present as a thick sack that is tough, white on the outer surface, and dull orange on the inner surface.
odor/taste The odor of this mushroom was not reported.  However, Barrows said that the taste was sweet at first, but with a bitter aftertaste.
spores The spores measure (7.8-) 8.8 - 11.1 (-13.0) × (6.2-) 8.0 - 10.2 (-11.0) µm and are globose to subglobose to broadly ellipsoid and inamyloid.  Basidia probably have few if any clamps at their bases.
discussion This species occurs with aspen (Populus tremuloides) or in mixed aspen-conifer forest at altitudes of about 3000 m in the Sangre de Cristo Mountains or other mountains near the city of Santa Fe in New Mexico, U.S.A. RET doubts that he has seen this entity in fresh condition and knows it only from Dr. A. H. Smith's Ms. drafts on Amanita and from notes on herbarium material reviewed (partially) in 1992.
brief editors RET

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