G.W. Martin 1963
SPORANGIA:stalked, scattered, umber brown, obovate to obconical, flattened above, 0.5 - 1.5 mm broad, 0.8 - 1.5 mm tall.
STALK: short, usually less than half the total height of the sporangium.
PERIDIUM: sharply delimited as a basal cup and an operculum, the cup membranous, more or less furrowed, umber brown, shining, the operculum flattened, dull.
CAPILLITIUM: abundant, brownish ochraceous, yellow by transmitted light, the filaments uniformly 7 - 8 µm in diameter, except at the tips, bearing 4 or 5 prominent spirals with few or no spines, the tips long-tapering, the filaments often bent in the middle and the two halves spirally twisted about each other.
NOTES: This species is the only member of the genus Trichia to have a clearly discernible preformed operculum.
SPORES: globose or ovoid, yellow in mass, pale yellow by transmitted light, warted, 11-12 µm in diameter.
HABITAT: Decaying wood.
DISTRIBUTION: Rare, Known from Auckland and Mid Canterbury.