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—R. E. Tulloss
Tulloss & K. W. Hughes
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The following material is based on original research of R. E. Tulloss.
?? mm wide, Cream Color at first, rounded conic at first; context white, with Vinaceous Russet staining in larval tunnels, ?? mm thick above stipe; margin nonappendiculate, ??; universal veil as friable warts, yellow to strongly yellow (recorded in materials annotated as juvenile as well as full maturity material), becoming Walnut Brown.
?? mm, white at first, bruising Vinaceous Russet, sometimes becoming shaggy; bulb only apparent as slight basal swelling of stipe, ??; context ??, white, bruising as in pileus; partial veil ??, membranous, skirt-like, sometimes entirely white, ??, sometimes with underside yellow and remaining so in mature specimen, ??; universal veil ??.
RET: [40/2/2] (6.8-) 7.8 - 9.5 (-11.6) × (5.0-) 5.6 - 6.6 (-7.2) μm, (L = 8.2 - 9.0 μm; L' = 8.6 μm; W = 5.8 - 6.0 μm; W' = 5.9 μm; Q = (1.27-) 1.31 - 1.69 (-1.78); Q = 1.37 - 1.56; Q' = 1.46), colorless, hyaline, thin-walled, smooth, inamyloid, ellipsoid to elongate, rarely broadly ellipsoid, usually adaxially flattened; apiculus sublateral, cylindric, small; contents granular or mono- or occasionally multiguttulate with or without additional small granules; color in deposit not recorded.
Solitary. New Jersey: In typical Quercus-Pinus rigida barrens or in mixed deciduous forest (including Acer, Betula, Carpinus caroliniana, Carya ovata, Fagus grandifolia, Liquidambar styraciflua, and Quercus spp.). Rhode Island: In sandy soil of forest dominated by Pinus spp. and scrub Quercus spp.
ONTARIO—Norfolk Co. - unkn. loc.,
2014 Eva Skific s.n.
(RET 639-5, nrITS & nrLSU seq'd.).
CONNECTICUT—Tolland Co. - Hebron,
The Hemlocks Nature Educ. Ctr. [41°37’11” N/
72°23’22” W], 1.ix.2013 COMA foray participant
s.n. [TFB 14343] (TENN
??, nrITS seq'd.).
MASSACHUSETTS—Dukes Co. - Tisbury,
Vineyard Haven, 13.viii.2014 William McAdoo s.n.
(RET 657-5, nrITS & nrLSU seq'd.).
NEW JERSEY—Mercer Co. - Washington
Crossing St. Pk. [40°18’00”N/74°52’03”W],
5.viii.1996 Britt Carlson & R. E. Tulloss
8-5-96-B (RET 230-3, juvenile–nrITS &
Monmouth Co. - Shark River Co. Pk., 19.viii.2011
Lilian K., Mary A., Owen C. & R. E.
Tulloss & Cristina Rodríguez Caycedo [Tulloss
8-19-11-D] (RET 485-7, nrITS seq'd.).
Warren Co. - Stephens St. Pk., lower picnic area,
4.viii.1996 Vinnie Tamurri s.n. [Tulloss 8-4-06-E]
(RET 228-10, nrITS & nrLSU seq'd.).
PENNSYLVANIA—Luzerne Co. -
Moon Lake Park [41.2530° N/ 76.0470° W, 240-400 m],
14.vii.2013 David Wasilewski s.n. [mushroomobserver
(RET 550-1, nrITS & nrLSU seq'd).
RHODE ISLAND—Washington Co. - Exeter,
ca. Arcadia Wildlife Management Area [41.5776° N/
71.7095° W], 20.vii.2014 Linas V. Kudzma 14159 (in
herb. L. V. Kudzma, nrITS & nrLSU
This species has strongly yellow universal veil
material in young specimens and, at least sometimes,
at maturity. Sometimes, the underside of the
partial veil is yellow. Another somewhat
similar taxon with yellow on the partial veil is
The taxa with temporary code names of the form
"sp-amerirubescens0X" (where "X" is an integer)
were originally treated on this site as a single
amerirubescens." The latter taxon
page is maintained on the site and references
collections still not divided among the temporary
—R. E. Tulloss
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