Granulobasidium vellereum (Ellis & Cragin) Julich
no common name
Cyphellaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
no common name
Cyphellaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Photograph
Map
Distribution of Granulobasidium vellereum
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Species Information
Summary:
Features include 1) resupinate growth on hardwood, 2) soft wax-like membranous patches attached tightly to wood, colored whitish with a rose tint, the surface smooth to powdery or mealy, and the margin fibrillose when young but often not differentiated when mature, 3) spores that are round, irregularly uneven, inamyloid, cyanophilic, and thick-walled, with many chlamydospores usually also present, 4) long tubular basidia with a tapering base and comparatively short sterigmata, 5) cystidia lacking, and 6) a monomitic hyphal system, the hyphae with clamp connections.
Microscopic:
SPORES 6-8.5 x 5.5-7.5 microns, nearly round, "with fine roughening on surface", inamyloid, colorless, cyanophilic, thick-walled, containing droplets; BASIDIA 4-spored, 45-65 x 4.5-5.5 microns, "cylindric-clavate, somewhat sinuous", with basal clamp connection; CONIDIA (chlamydospores) 9-10 x 5.5-6 microns, elliptic, smooth, cyanophilic, thick-walled, with droplets, some germinating; CYSTIDIA not seen; HYPHAE monomitic, 2-5 microns wide, thin-walled, with clamp connections, (Breitenbach), SPORES round, irregularly uneven (may look echinulate), inamyloid, cyanophilic, thick-walled, usually containing one droplet, mostly 7-8 microns in diameter; BASIDIA 4-spored, 40-60 x 5-6 microns, "tubular, somewhat sinuous, tapering towards the base", with basal clamp connection, sterigmata small; CONIDIA (chlamydospores) "usually present, often in large quantities", 8-10 x 6-8 microns, "formed apically or intercalary" on thin-walled hyphae, about 2 microns wide, apical conidia rounded or pear-shaped, "intercalary ones more or less fusiform", conidial wall much thickened, strongly cyanophilic and also dextrinoid, protoplasm mostly with one oil droplet; CYSTIDIA none; HYPHAE monomitic, 3-5 microns wide, "with thin or somewhat thickened walls", with clamp connections; "subiculum of densely interwoven hyphae with predominantly vertical hyphal direction", (Eriksson)
Notes:
Granulobasidium vellereum has been found in BC, WA, ID, AB, MB, NB, NS, ON, PQ, AL, CA, GA, IL, KS, MA, MI, MO, MN, MT, NH, NY, OH, PA, SD, TX, VT, and WI, (Ginns). The distribution also includes Europe including Denmark and Sweden, (Eriksson), and Switzerland (Breitenbach).
Habitat and Range
SIMILAR SPECIES
Other Hypochnicium species do not have the combination of reddish fruitbody, round, not quite smooth spores, usually many chlamydospores, long tubular basidia with a tapering base, and a lack of cystidia, (Eriksson).Habitat
on dead wood of hardwoods, especially Ulmus (elm); winter half of the year, (Breitenbach), on hardwood (e.g. Ulmus), usually near ground, but when weather is mild and humid may be found on trunks several meters above the ground, (Eriksson), Acer rubrum (Red Maple), Acer saccharum (Sugar Maple), Betula alleghaniensis (Yellow Birch), Celtis occidentalis (Hackberry), Fagus grandifolia (American Beech), Malus sp. (apple / crabapple), Populus balsamifera (Balsam Poplar), Populus tremuloides (Quaking Aspen), Populus trichocarpa (Black Cottonwood), Thuja plicata (Western Red-cedar), Ulmus pumila (Siberian Elm), (Ginns), on rotting bark and sometimes wood of hardwood trees; usually winter, (Buczacki)