Habitat: It can be common in gardens where woody materials have been added to the planting beds.
Substrate: Cyathus striatus occurs in a number of different habitats on decaying plant materials such as wood chips, small branches, and needles.
Conservation Status: Not of concern
The species name “striatus” refers to the vertical grooves on the inside of the mature gray-brown cups. The exterior of the cups is densely covered by rust brown to dark brown hairs and tomentum. The lens-shaped peridioles are whitish gray in color. C. stercoreus (Schweinitz) de Toni is a very similar but has non-grooved cups and usually grows in dung.
PNW Herbaria: Specimen records of Cyathus striatus in the Consortium of Pacific Northwest Herbaria database
CalPhotos: Cyathus striatus photos