name |
Amanita sp-McAdoo-358-1 |
author |
Tulloss nom. prov. |
name status |
cryptonomen temporarium |
GenBank nos. |
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|
intro |
Macroscopic description based on field notes of Buck McAdoo. The remainder of the following is based on original research of R. E. Tulloss. |
pileus |
50 - 95 mm wide, at first with sordid yellowish (sometimes slightly olivaceous) brown over disc and rather broad white zone at margin, in age largely sordid yellowish brown fading to tan-buff at margin, campanulate at first, then convex, concave in age, often with obtuse low umbo; context white, 10± mm thick above stipe; margin nonappendiculate, short striate (0.15-0.2R); universal veil absent or as small white fragment. |
lamellae |
free, crowded, white, with edge entire; lamellulae truncate to excavate, sometimes with tooth extending along undersurface of pileus context. |
stipe |
130 - 180 × 14 - 21+ mm, white, narrowing upward, with appressed white pruinosity on uppermost portion, with fine flattened squamules below (becoming pallid brownish tan with age and handling); context white, hollow, with central cylinder up to 15 mm wide: exannulate: universal veil saccatae, submembranous, fragmenting, fragile, pale gray in upper part of limb, whitish below, with cottony exterior, with inner surface smooth, moist, pale gray. |
odor/taste |
Odor and taste mild. |
macrochemical tests |
none reported |
basidiospores |
[20/1/1] (8.1-) 9.0 - 12.5 (-17.4) × 7.5 - 11.3 (-17.0) μm, (L = 11.0 μm; L' = ?? μm; W = 10.0 μm; W' = ?? μm; Q = 1.04 - 1.22 (-1.23); Q = 1.10; Q' = ??), hyaline, colorless, smooth, thin-walled, inamyloid, predominantly subglobose, occasionally globose or broadly ellipsoid; apiculus sublateral, cylindric; contents predominantly monoguttulate ("oil drop" type); off-white (whitish buff) in deposit. |
ecology |
Subgregarious. Ca. sea level. In soil and conifer duff of old growth forest including Pseudotsuga menziesii, Thuja plicata, and Tsuga sp. |
material examined |
U.S.A.:
WASHINGTON—Whatcom Co. - ca. Bellingham, Stimpson Nature Reserve, 21.x.2004 Buck McAdoo page358#1 (RET 456-8). |
discussion |
At present, this entity is known only from a single location. |
citations |
—R. E. Tulloss |
editors |
RET |
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