Dermea grovesii J. Reid & Piroz.
no common name
Dermateaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
no common name
Dermateaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Photograph
Species Information
Summary:
Features include tiny, circular, dark reddish brown to black, slightly furfuraceous fruitbodies with the spore-bearing surface black and flat to convex, the margin at first raised; consistency leathery to horny (fleshy-leathery when moist); erumpent growth on spruce; and microscopic characters.
Microscopic:
spores 16.5-21.5 x 6-8 microns, elliptic, straight to somewhat curved, colorless, but containing a yellowish-brown pigment in the droplets, 0-2-septate but mainly with one median septum, not constricted; asci 8-spored, 65-120 x 13-15 microns, cylindric-clavate, tapering in lower part into a short stem; paraphyses filiform, colorless, "septate, simple or branched, slightly swollen and glued together at their tips through gelatinization"; conidia 60-95 x 6.5-8 microns, "straight to usually curved, falcate", at first colorless and continuous [aseptate], becoming yellowish brown and 6-septate to 10-septate; phialides 33-55 x 2.5-4 microns, "with a minute collar, simple, cylindric, with 1 or 2 septa", colorless to nearly colorless at their base; microconidia not seen
Notes:
Dermea grovesii was described from ON. There are 2 collections from BC at the Pacific Forestry Centre determined by A. Funk.
Habitat and Range
SIMILAR SPECIES
Dermea piceina Groves, described from Ontario on spruce, has slightly longer asci and slightly shorter spores, but the most significant difference is that the conidial fruitbodies of D. piceina are almost spherical and 0.01-0.03cm in diameter and the conidiophores lining the cavity are simple to branched and produce 1-celled to 4-spored conidia only 22-40 x 3-5 microns, (Reid, J.). See also SIMILAR section of Dermea balsamea and Dermea pseudotsugae.Habitat
"erumpent, scattered to gregarious, separate or sometimes two to four in a cluster" on Picea glauca (White Spruce); conidial fruitbodies "erumpent, scattered, single, or clustered in groups of two to five and then united at their base", arising from a spherical to irregularly shaped basal stroma, (Reid, J.), BC specimens were also on Picea glauca
Synonyms
Synonyms and Alternate Names:
Hydnum radula Fr.
Hyphoderma radula (Fr.) Donk