The cap of the single known specimen was recorded as 98 mm wide, rich brown, especially dark over disc, progressively somewhat paler toward margin, campanulate at first, and having a marked umbo. The cap's flesh
is 7 mm thick above the stem, off white except gray in the umbo, and brownish gray in areas of insect damage. The cap's margin is striate.
The gills are free, brownish white in mass, white in side view, 6.5 mm broad, marginate (with pale brown margin). The short gills are truncate or truncate with a tooth at the point at which the truncate edge meets the cap's flesh, unevenly distributed, of diverse lengths, and plentiful.
The stem is 172 × 11 mm, pale brownish gray, with the surface breaking up into gray fibrils here and there on a pallid ground, and very finely striate lengthwise. The stem lacks annuluas. The volva at the stem's base is sack-like, about 41 mm tall, membranous, and white on both inside and outside surfaces.
Not yet measured.
This taxon is known only from eastern Texas.—R. E. Tulloss
Tulloss & D. P. Lewis
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The following material not directly from the protolog of the present taxon and not cited as the work of another researcher is based on original research by R. E. Tulloss and David P. Lewis.
98 mm wide, rich brown, especially dark over disc, not staining/bruising observed, progressively somewhat paler toward margin, campanulate at first, with marked umbo; context 7 mm thick over stipe, off white except gray in umbo, brownish gray in insect damage, thinning evenly for two-thirds of radius, then membranous to margin; margin striate (??R); universal veil absent.
free, without decurrent line on upper stipe, brownish white in mass, white in side view, no bruising/staining observed, 6.5 mm broad,, broadest at two-thirds to three-quarters radius, marginate (pale brown); lamellulae truncate or truncate with tooth at context, unevenly distributed, of diverse lengths, plentiful.
172+ × 11 mm, pale brownish gray, with surface breaking up into gray fibrils on pallid ground here and there, longitudinally striatulate, narrowing upward, not flaring at apex; context white streaked with brown, dark brown in insect tunnels, hollow, with central cylinder 4 mm wide; exannulate; universal veil as saccate, membranous, persistent volva, ca. 41 mm tall, membranous, over 1 mm thick, smooth on surfaces, white on inside and outside surfaces.
Odor indistinct; taste not recorded.
Solitary. In sand of river bottomland hardwood forest.
TEXAS—Hardin Co. - BTNP, Jack Gore Baygall Unit, 16 km N of Silsbee, 10.vi.2000 Arlene R. Bessette s.n. [Tulloss 6-10-00-M] (RET 313-6); BTNP, Neches R. Corridor Unit, at Hwy. 96 bridge 8 km E of Silsbee, 7.vi.2000 David P. Lewis s.n. [Tulloss 6-7-00-A; NAMA 2000-043] (F; RET ??).
Note: My duplicate of the material in F has been requested 13.ix.2010.—R. E. Tulloss
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