This description is based on several collections (many containing multiple specimens) that were sent to RET by Ellen Greer, who was then living in Kissimmee, Florida. Well-annotated collections of this taxon are sought by the editors.
The cap of Amanita sp-F14 is reported to be about 42 mm wide and yellow-orange, but not with the uniformity of tone familiar from A. flavoconia. The convex cap fades to tan in direct sunlight. Its margin is not radially grooved. The volva is often absent. When present it takes the form of scattered, scattered, easily crushed, yellow warts.
The gills are free, close, and white. There are plentiful short gills.
The stem of A. sp-F14 is repored to be about 65 × 8 mm, cylindric, and white. bulb ??; It bears a a small, white, skirt-like ring that sometimes has yellow volval remnants attached to its edge. Small, yellow, crushable volval warts may be found on the lower stem or bulb or in surrounding soil or litter.
Odor and taste have not been recorded for this species.
Spores of this species measure (6.1-) 7.0 - 9.5 (-10.0) × 4.5 - 6.0 (-6.5) μm and are ellipsoid to elongate (rarely broadly ellipsoid, rarely cylindric) and amyloid. Clamps are absent from bases of basidia.
Our material was collected in a lawn in Osceola County, Florida, U.S.A. in association with Laurel Oak (Quercus laurifolia).
This mushroom seems to belong in the "A. flavoconia group" and, within that group, with the taxa with narrower spores and caps not have their pigment arranged in fine radial lines (such as A. elongata and A. sp-36).—R. E. Tulloss and C. Rodríguez Caycedo
"Kissimmee Yellow Dust Amanita"
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The following material is based on collectors' notes and photographs and on original research of C. Rodríguez Caycedo and R. E. Tulloss.
42± mm wide, yellow-orange, fading to tan in direct sunlight, convex; context not recorded; margin nonstriate; universal veil absent or as scattered warts, yellow, flocculose, friable, detersile.
free, close, white; lamellulae plentiful.
65± × 8± mm, cylindric, white; bulb ??; context not recorded; partial veil white, ??, membranous, skirt-like, persistent, on edge bearing yellow universal veil material; universal veil as yellow, friable warts on lower stipe or bulb and in surrounding substrate.
Florida: At 16 m elev. In lawn near Quercus laurifolia.
FLORIDA—Osceola Co. - Kissimmee, Good Samaritan Village, Veteran's Park [28°15'53" N/ 81°26'53" W, 16 m], 7-11.vi.1994 Ellen Greer s.n. (RET 127-10), 25.vii.1994 E. Greer s.n. (RET 373-4), 30.vii.1994 E. Greer s.n. (373-5), 15.viii.1994 E. Greer s.n. (372-10), 16.viii.1994 E. Greer s.n. (RET 373-2), 17.viii.1994 E. Greer s.n. (RET 373-6), 22.viii.1994 E. Greer s.n. 22.viii.1994 E. Greer s.n. (RET 373-7), 29.viii.1994 E. Greer s.n. (RET 373-3), ? E. Greer s.n. (RET 373-5).
A similar probable taxon is A. sp-36. A rather similar possible species with almost identical spore size and shape is A. sp-N47.
The reader may also wish to compare A. fraterna Murrill, originally described from Florida. The brief description of that species mentions a pinkish color in the stipe flesh and describes cap pigmentation that could apply to A. sp-F14.
—R. E. Tulloss and C. Rodríguez Caycedo
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"Kissimmee Yellow Dust Amanita"
1. Amanita sp-F14, Osceola Co., Florida, U.S.A.
Ellen Greer - (1) Osceola County, Florida, U.S.A.
Spore data for collections provisionally identified as: Amanita sp-F14 Tulloss
Each spore data set is intended to comprise a set of measurements from a single specimen made by a single observer;
and explanations prepared for this site talk about specimen-observer pairs associated with each data set.
Combining more data into a single data set is non-optimal because it obscures observer differences
(which may be valuable for instructional purposes, for example) and may obscure instances in which
a single collection inadvertently contains a mixture of taxa.