Botryohypochnus isabellinus
Svensk bot. Tidskr. 52(1): 2. 1958.
Common Name: none
Synonym: Botryobasidium isabellinum (Fr.) D.P. Rogers
For descriptions see Bernicchia & Gorjón & 'California Mushrooms'.
Forming small patches on wood of conifers (Douglas fir); fruiting from fall through winter, distribution unknown.
Unknown.
Botryohypochnus isabellinus can be recognized in the field by cream-colored, felted, crust-like fruitbodies that cover small patches of conifer bark or wood, often Douglas fir. Under the microscope, unclamped hyphae that branch at right angles, spiny, globose spores on 4-spored basidia, and a lack of cystidia are distinctive. Similarly textured, white to grayish white fruitbodies may represent Botryobasidium species, but they have smooth, ellipsoid to fusiform spores usually formed on 8-spored basidia.
Bernicchia, A. & Gorjón, S.P. (2010). Corticiaceae s.l. Edizioni Candusso: Alassio, Italy. 1008 p.
Breitenbach, J. & Kränzlin, F. (1986). Fungi of Switzerland. Volume 2: Non-Gilled Fungi. Verlag Mykologia: Luzern, Switzerland. 412 p.
Burt, E.A. (1916). The Thelephoraceae of North America. VI. Hypochnus. Ann. Missouri Bot. Gard. 3: 203-241. (PDF)
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Ginns, J. (1998). Genera of the North American Corticiaceae Sensu Lato. Mycologia 90(1): 1-35.
Jülich, W. & Stalpers, J.A. (1980). The resupinate non-poroid Aphyllophorales of the temperate northern hemisphere. North Holland Publishing Company: Amsterdam. 335 p.
Larsson, K.-H. & Ryvarden, L. (2021). Corticioid Fungi of Europe - 1 - Acanthobasidium - Gyrodontium. Fungiflora: Oslo. 266 p.
Stalpers, J.A. (1993). The Aphyllophoraceous fungi I Keys to the species of the Thelephorales. Studies in Mycology 35: 1-168.
