E-Flora BC: Electronic Atlas of the Flora of British Columbia

Cyathus striatus (Huds.) ex Pers.
ribbed splashcup

Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.

Introduction to the Macrofungi

© Rosemary Taylor  Email the photographer   (Photo ID #21835)

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Distribution of Cyathus striatus
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Species Information

Features include 1) an inverted cone-shaped, shaggy brown cup with setae on the edge, 2) strongly radially striate, brownish gray interior covered at first by a whitish membrane, and 3) slightly triangular dark eggs attached by a cord. The sides of the cup are angled so that raindrops falling into the mushrooms dislodge the spore sacs (eggs), (Lincoff(2)). In the air the cord attached to the egg acts like a whip, enabling the egg to become attached to blades of grass, (Lincoff(1)). Cyathus striatus is found in WA, AL, CO, CT, GA, IA, IN, MT, NY, OH, PA, WI, Puerto Rico, and Mexico, (White). It is very widespread in the temperate world, Canada including BC and AB, United States, Mexico, India, China, Japan, (Brodie(1)). It also occurs in Europe (Courtecuisse). The University of British Columbia has collections from BC and Thailand, the University of Washington has collections from WA, IA, and VA, and Oregon State University has collections from OR, OH, and PA.
commonly 0.7-1cm high, and 0.6-0.8cm wide at top but variable, commonly narrowly obconic, but varying to widely obconic, slender in lower part but flaring outwards in upper third; some shade of brown but varying from gray buff to deep chocolate, brown or
Outer Surface:
faintly to strongly pleated, irregular shaggy or woolly tomentum, often with some downward pointing hairs, (Brodie(1)), cinnamon-brown to grayish brown or dark brown, (Arora), covered with hairs externally, (Lincoff(1)), brownish orange to dark brown; str
Inner Surface:
inside markedly pleated and smooth, shiny, (Brodie(1)), radially grooved, brownish gray, (Courtecuisse), lead-colored; shiny, (Lincoff(1), but photo shows brown interior)
spores 18-20 x 8-10 microns, elliptic, slightly narrower at one end, thick-walled, with a notch or apiculus at one end, (Brodie(1)), 18-22 x 8-12 microns, elliptic, white, (Lincoff(1)), spores 15-22 x 8-12 microns, elliptic, notched at one end, smooth, (Phillips)

Habitat / Range

in open woodland on small twigs and woody leaf mould, occasionally in gardens, (Brodie(1)), can grow in manure, but more common on sticks and other vegetable matter, (Arora), scattered or in groups on dead wood or vegetable debris in open woods, July to October, (Phillips), on dead wood, bark, twigs, and wood chips, in open woods, (Lincoff(2)), "on decaying plant materials such as wood chips, small branches, and needles", (Trudell)

Synonyms and Alternate Names

Cyathus griseus Pers.
Cyathus hirsutus (Schaeff.) ex Quel.

Taxonomic and Nomenclatural Links

Additional Range and Status Information Links


no (McKnight)

Additional Photo Sources

Related Databases

Species References

Brodie(1), Brodie(2), White, V.S.(1) (as Cyathia hirsuta Schaeff.), Arora(1), Phillips(1)*, Lincoff(2)*, Lincoff(1)*, Schalkwijk-Barendsen(1)*, Courtecuisse(1)*, McKnight(1)*, Miller(14)*, Trudell(4)*, Bacon(1)*, Buczacki(1)*

References for the fungi

General References