Nidula niveotomentosa

Nidula niveotomentosa

Nidula niveotomentosa is a fungi in the family Agaricaceae, and is a bird's nest fungi. Nidula niveotomentosa is easily recognized when young by its pubescent, white, cylindrical fruiting bodies and small brown peridioles embedded in mucilaginous gel. Older specimens may be matted, pale-grey to brown, leading to confusion with Nidula candida. The latter, despite the species name which means "white," is actually greyish to brown, and shaggy to finely squamulose when young. Nidula candida is also larger, up to 15 mm tall, 8 mm broad, and has a fruiting body that flares broadly at the mouth. Both species are common, but Nidula candida is more northern in distribution. Species of Cyathus and Crucibulum also bear a resemblance to Nidula tomentosa but can be distinguished by peridioles that are attached to the cup wall by a thin cord (use hand lens) rather than embedded in a mucilaginous gel.
A Closer Look... ... at the Bird’s Nest Fungi, Nidula niveotomentosa.      Canada,Geotagged,Nidula niveotomentosa,Winter,Wooly Bird’s Nest Fungi


Fruiting body 4-6 mm tall, 4-5 mm broad, cylindrical, if flaring, abruptly at the apex; outer surface, white, pubescent when young, becoming buff to pale-grey, matted when senescent; mouth fringed, the opening covered by a thin, white, evanescent, cottony membrane (epiphragm), when lost, revealing a glabrous, tan interior and small, brown, peridioles (eggs), 0.5-1.0 mm in diameter, embedded in a mucilaginous gel.
A Bird’s Nest Montage A collection of four photos showing the maturation of the fruiting body of Nidula niveotomentosa. The upper left photo shows the fruiting body with the epiphragm (lid) inact. The photo on the top right shows that the epiphragm has ruptured exposing the jelly like material within while the photo on the lower left shows the exposed peridium (nest). Finally, the photo on the lower right is a closeup of the peridioles (eggs) which contain the spores. Canada,Geotagged,Nidula niveotomentosa


Scattered to clustered on sticks, wood chips, and other woody debris, both coastal and montane; fruiting from mid to late winter, old fruiting bodies persisting for months; common.


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SpeciesNidula niveotomentosa