80 mm wide, gray at first, taking on brownish tint, darkest over disc and over marginal striations, virgate, dull; context ??; margin tuberculate, striate (0.4R - 0.45R), nonappendicuate; universal veil absent.
49 × 5 - 6 mm, pallid, ??; context ??; exannulate; universal veil as saccate volva, with upper third of limb becoming gray, with limbus internus rather long and attached near point of limb's attachment to stipe.
Spot test for laccase (syringaldazine) - negative throughout (older) basidiocarp. Test voucher: Tulloss 8-31-94-D.
Solitary. At 2800 m elev. In dark loam of mixed forest dominated by Quercus spp. and including Pinus patula, Abies religiosa, Baccharis conferta, and Arbutus xalapensis.
Tlaxco - km 4-5 camino El Rosario a El Rodeo,
Cerro El Peñón [2800 m], 31.viii.1994 A. Estrada
Torres & L. Varela Fregoso s.n. [Tulloss 8-31-94-D]
(RET 135-8; TLXM); Parq. Nac. La Malintzi volcano
above IMSS Malintzi just below tree line on peak,
19.viii.1998 Paula J. Brooks s.n. [Tulloss 8-19-98-C]
(RET 292-8, nrITS & nrLSU seq'd.).
—R. E. Tulloss
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