Cyathus striatus

Scientific name:  Cyathus striatus (Huds.) Hoffm.
Derivation of nameStriat- means "finely furrowed" or
"lined" (striate) in reference to the grooved inner surface. 
Synonyms:  
Common name(s):  Splash cups; Fluted bird's nest.
Phylum:   Basidiomycota
Order:   Agaricales
Family:   Nidulariaceae
Occurrence on wood substrate: Saprobic; clustered on
wood chips, bark, fallen branches; summer through fall.   
Dimensions: Vase-shaped cups are up to 2 cm tall and
1cm wide.    
Sterile nest surfaces: Exterior surface dark or grayish-
brown and covered with shaggy or wooly hairs; interior
surface distinctly grooved; shiny; pale gray or grayish-brown;
young vases are covered by a whitish membrane.
Fertile tissue: Gray peridioles ("eggs") occupy the bottom
of the vase-shaped cups; each egg is attached by a thread-
like cord (funiculus) to the inner cup wall.
Edibility: Not edible.
Comments: When an egg is ejected, the trailing cord
(funiculus) helps it adhere to an object it encounters.
  
More information at MushroomExpert.com:   
More information at TomVolkFungi.net:



Figure 1. Typical view of splash cups on decaying wood
substrate. Photo © Larry Grand


Figure 2. Splash cups clustered on rotting wood.
Photo © Gary Emberger.


Figure 3. Bird's nest fungi love tanbark mulch.
Photo © Gary Emberger.


Figure 4. A closer view of some of the "nests" in Figure 3.
The eggs (peridioles) of Cyathus striatus are described as
gray or dark. Note in the specimens above that the eggs
may initially be covered by a whitish material.
Photo © Gary Emberger.


Figure 5. These specimens, darker than those in Figure 4,
show some of the color variation in the species.
Photo © William Roody.


Figure 6. Forces resulting from a drop of water striking
the inside of the "splash" cup eject the eggs from the cup.
Photo © Pam Kaminski.


Figure 7. The hairy outside, grooved inside, and gray
peridioles make this a distinctive fungus.
Photo © Gary Emberger.


Figure 8. The nests on the right still have membranes or
remnants of membranes around the rim of the nest.
Photo © Gary Emberger.

 

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