1. Amanita sp-T03, Lance Rosier Unit, Big Thicket Nat. Pres., Hardin Co., Texas, U.S.A.
The white cap of this mushroom is about 37 mm wide, planoconvex to planoconcave at maturity, and stains reddish brown when injured. The flesh is white and stains similarly. The cap margin is not striate.
The gills are close and white and stain as the cap does. No data was recorded about the short gills.
The white stem of the sole specimen known was 70 × 7 mm, with a rooting bulb measuring 25 × 11 mm. It bruises as the cap does. Its flesh is white. The stem has a white, skirt-like, superior ring that collapses on the stem with age. No volval material was observed on the stem.
The fruiting body had a very distinct odor of pear or apple. No taste was recorded.
The spores of this mushroom measure (6.6-) 7.0 - 8.4 (-8.7) × 4.5 - 5.9 μm, are predominantly ellipsoid to elongate (occasionally broadly ellipsoid), and amyloid. Because of its placement in sect. Validae, it is probable that the basidia of this species have no clamp connections at their bases.
At present, this entity is known only from the Big Thicket Nat. Pres. in eastern Texas, U.S.A. The soil is sandy and the area in which this mushroom was collected was described as dominated by oak (Quercus). It is very likely that pine (Pinus) was also present.—R. E. Tulloss
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Olive text indicates a specimen that has not been
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where data is missing or uncertain.
The following material not directly from the protolog of the present taxon and not cited as the work of Dr. Z. L. Yang or another researcher is based upon original research by R. E. Tulloss.
37 mm wide, white, bruising/staining reddish brown where injured; context white, staining like surface; margin nonstriate, nonappendiculate; universal veil absent in specimen reviewed.
??narrowly adnate??, close, white, staining like pileus; lamellulae ??.
70 × 7 mm, white, stain like pileus, subsinuate, flaring at apex; bulb 25 × 11 mm, radicating; context white; partial veil superior, white, skirt-like, collapsing on stipe; universal veil not evident in material examined.
Odor distinctly of pear or apple. Taste not recorded.
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.