Fibricium rude (P. Karst.) Julich
no common name
Uncertain
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
no common name
Uncertain
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Photograph
Species Information
Summary:
Features include 1) resupinate growth on wood, 2) a white or creamy white spore-bearing surface, the margin with small rhizomorphs, 3) spores that are narrowly elliptic to cylindric, smooth, and inamyloid, 4) cystidia that are tapering, obtuse, thin-walled, with or without a globular cap that dissolves in mounting media, and 5) a dimitic hyphal system, the generative hyphae with clamp connections.
Microscopic:
SPORES 4.5-5.5 x 1.2-2 microns, narrowly elliptic to subcylindric, smooth, inamyloid, acyanophilic; BASIDIA 4-spored, 12-17 x 3-5 microns, clavate; CYSTIDIA 45-60 x 5-7 microns, "obtuse, thinwalled, generally tapering, rarely cylindrical", apical part looks different from the basal part (especially in phase contrast, where apical part refractive), and may also have a globular cap of non-crystalline substance that is easily dissolved in KOH and other mounting media; HYPHAE dimitic: generative hyphae 2.5-3.5 microns wide, thin-walled, richly branched, with anastomoses and clamp connections, skeletal hyphae 1.5-2 microns wide, thick-walled, without branches or clamp connections, subhymenium "of densely joined generative hyphae, subiculum of generative hyphae mixed with skeletal hyphae", (Eriksson), SPORES 4-5.5 x 2-2.5 microns, short-cylindric; CYSTIDIA 55-85 x 5-7 microns, projecting to 50 microns, fusoid, (Martin)
Notes:
Fibricium rude has been found in BC, WA, ID, MB, NS, ON, AK, AZ, CO, MI, MT, NM, NY, and WI, (Ginns), as well as Europe including Scandinavia, (Eriksson).
Habitat and Range
SIMILAR SPECIES
Fibricium lapponicum is rare, and has larger spores and encrusted cystidia (cystidia of Fibricium rude may have a cap of non-crystalline substance that is dissolved in KOH), (Eriksson).Habitat
on coniferous wood and hardwood, (bark and wood; twigs; needles; slash), Abies balsamea (Balsam Fir), A. concolor, Alnus oblongifolia (Arizona alder), A. rubra (Red Alder), Amelanchier alnifolia (Saskatoon serviceberry), Juglans major (Arizona Walnut), Juniperus sp. (juniper), Picea engelmannii (Engelmann Spruce), P. sitchensis (Sitka Spruce), Pinus banksiana (Jack Pine), P. ponderosa (Ponderosa Pine), Populus sp., Pseudotsuga menziesii (Douglas-fir), Symphoricarpos occidentalis (western snowberry), Thuja plicata (Western Red-cedar), associated with a white rot, (Ginns), on "a wide variety of substrates but no doubt most common on coniferous wood", (Eriksson)