Exidia zelleri Lloyd
no common name
Auriculariaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
no common name
Auriculariaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Photograph
Species Information
Summary:
The distinctive feature of Exidia zelleri is that the basidia are only embedded in a thin surface layer. Other features include gyrose to thin flat form, pale purplish gray color, and few scattered rounded papillae.
Microscopic:
spores (14.5)16-19(21) x 5-6 microns, cylindric-curved, colorless, white in mass, capable of germinating by repetition; basidia "arising as clavate structures subtended by clamp connections, proliferating through the clamp connections to form cymose clusters", probasidia becoming obovate to ellipsoid, (11)13.5-20 x 8-11microns, "becoming longitudinally to obliquely septate into 4 cells", hypobasidia mostly ellipsoid, 13.5-17.5-20 x (8.5)10-12.5 microns, epibasidia 2-2.5 microns wide at bases, 3.5 microns wide at tips; hyphae 2-4 microns wide, thin-walled, "with numerous, conspicuous clamp connections varying from closed to keyhole to looplike, often spurred", fertile hyphae occasionally up to 5.5 microns wide, (Klett), spores 20 x 8 microns, curved or rarely straight, colorless; basidia 12-14 microns, globose, colorless, embedded in a thin layer, close to the surface, (Lloyd)
Notes:
It is found in OR and CA (Ginns). There are multiple collections from BC by R. Bandoni deposited at University of British Columbia.
Habitat and Range
SIMILAR SPECIES
Tremella violacea of Europe is close but Exidia zelleri is larger with papillae that are not present on T. violacea, and with larger spores, (Lloyd). Exidia glandulosa lacks violaceous tints in the fresh fruiting bodies, and has smaller spores, (Klett). Exidia iteinos nom. prov., described on willow from WA, BC, and AK, 1) lacks violaceous tones, 2) has surface that is smooth to finely asperulate (instead of being marked by conic papillae), and 3) has generally larger spores ((17)18.5-22.5(25) x 5-6 microns), (Klett).Habitat
growing on Sambucus glaucus (Lloyd), Quercus agrifolia (Ginns), Acer, Populus, ?Sambucus, (Klett)
Status Information
Synonyms
Synonyms and Alternate Names:
Dasyscypha occidentalis G.G. Hahn & Ayers
Lachnella occidentalis (G.G. Hahn & Ayers) Seaver