The spores measure 9.8 - 11.6 (-11.9) × (8.4-) 8.8 - 10.5 (-11.6) µm and are subglobose to broadly ellipsoid and inamyloid. Clamps are probably absent at bases of basidia.
—R. E. Tulloss
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The following text is derived from original research of R. E. Tulloss.
?? - 84 mm wide, warm
brown (7.5YR 3/4) over disc, elsewhere light to
moderate orange-brown to orange-tan, planar,
with pronounced umbo, dry, matte, somewhat like kid
leather; context pale brown under pileipellis,
else pale cream, unchanging when cut or bruised,
4.5 mm thick at stipe, thinning evenly to margin;
margin striate (0.1R), nonappendiculate;
universal veil absent.
free with faint decurrent line on stipe, ??, tan with orange tint in mass, cream and partially watersoaked in side view, unchanging when cut or bruised, 7 mm broad, marginate here and there (apparently with margin concolorous with pileus); lamellulae truncate, unevenly distributed, of diverse lengths, plentiful, attached at stipe as well as at margin.
?? - 115 × ?? - 10 mm, dingy cream, becoming brownish from handling, narrowing upward, not flaring at apex (even in age), finely fibrillose (10× lens), with fibrils concolorous with ground color, striatulate below; context pale cream to whitish, with grayish tints in stipe base, hollow above, stuffed in base with white cottony fibrils, with larva tunnels orange-brown (only noted as damage in upper central cylinder), with central cylinder 4 mm wide and running from pileus context to very base of stipe; exannulate; universal veil as saccate volva, membranous, white on exterior, with inner surface concolorous with pileus, with orange-rusty stains on exterior, moderately smooth, ?? × ?? mm, less than 1 mm thick; limbus internus not discerned in revised material (old).
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