Trichoglossum walteri
Trichoglossum walteri spore
Trichoglossum walteri
This earth tongue is covered with setae;
bristle-like cells that provide protection to the
spore producing cells.
See Mushrooms of Northeastern
North America
, Alan E. Bessette, et
al., 1997, pp. 505-506
Trichoglossum walteri setae
The mature spores of Trichoglossum walteri are
60-125 microns long and are mostly 7 septate.  
An ascus, blue tipped cell, lies below the protection
of the large, pointed setae.  (Melzer's mount.)
Most sources make clear that a microscope is required for
accurate identification of Trichoglossum and Geoglossum
species.  Another critical requirement is fresh fruiting bodies
from which to obtain a spore print.  Spores obtained from a
spore print provide mature spores that are needed for
accurate spore measurement and septa count.  
See Trichoglossum hirsutum at
George Barron's Website on Fungi