Mtn beech forest, outcrop on top of knob.Sandstone or rhyolite ?
Specimen notes
Supplementary remarks:
Upper lamina and margins unistratose, weakly keeled.
Lower laminal cells quadrate, not oblate assymetric at base
capsule, immersed; peristome absent or nearly so; spores malformed in dissected capsule.
[Fife AJ]