Details about map content are available here Click on the map dots to view record details.
Species Information
Summary: Features include 1) an irregularly hemispheric-cushion-shaped, brain-like fruitbody that is white to pinkish brown, yellowish brown, or yellowish, 2) base with a hard white core, 3) growth on dead conifer wood in association with Stereum sanguinolentum, and 4) microscopic characters. According to Bandoni, the core of the fruiting body consists of transformed hyphae of Stereum sanguinolentum, (Breitenbach).
It is found in BC, OR, NS, ON, PE, PQ, MA, NC, NH, NY, PA, VT, and WI, (Ginns). It has been reported from WA by Andrew Parker (pers. comm.), Distribution also includes North America, Europe, and Asia, (Breitenbach), Germany (Zugmaier), Estonia, Georgia, and Russia (Raitviir), and Argentina (Lowy).
Fruiting body: irregularly hemispheric-pulvinate [hemispheric - cushion-shaped], appressed flat on substrate, upper spore-bearing surface tuberculate-undulating and furrowed, +/- cerebriform [brain-like], margin sharply bounded, fruiting body "in section through the center of the base with rather hard white core which is surrounded by gelatinized material"; "white to yellowish, ocherish or pale pink-brownish"; smooth, dull to shiny, sometimes rather opalescent, (Breitenbach), 1-6cm, flesh-colored to brownish, (Arora), usually 0.3-1cm across and up to 0.5cm high, sometimes larger, pulvinate to subspherical, firm-gelatinous, fleshy-fibrous within, subsessile; dingy yellow-brown, drying dull cinnamon to natal brown, white within; plicate-rugose [pleated-wrinkled], (Martin), 0.3-1.5cm, almost spherical, sinuous-wrinkled, ocher-yellow to muddy-yellow-brown with white fleshy-leathery core and gelatinous outside layer, (Raitviir), spore deposit white (Buczacki)
Microscopic: spores 9-11 x 7.5-9 microns, round to short-elliptic, smooth, inamyloid, colorless, with distinct blunt apiculus, sometimes with droplets; hypobasidia 13-20 x 13-18 microns, nearly spherical, longitudinally septate, with 2 long epibasidia; hyphae of gelatinized layer 1.5-2.5 microns wide, septa with clamp connections, hyphae from core 2.5-4 microns wide, thick-walled, septa without clamp connections, (Breitenbach), spores 8-10 x 7-9 microns, nearly round; probasidia 12-15 x 12-5 microns, spherical, becoming cruciate-septate, (Martin), basidia 2-spored or 4-spored; hyphidia abundant in hymenium close to substrate, (Chen, C.-J.)
Habitat / Range
Stereum sanguinolentum, but typically reported on Abies, Pinus, Pseudotsuga, Quercus, (Ginns), single to gregarious on dead conifer wood, always in association with Stereum sanguinolentum, (Breitenbach), dead coniferous wood, less commonly hardwood, (Martin), all year (Buczacki)
Similar Species
Tremella foliacea is larger and reddish cinnamon to brown, vinaceous brown, or tinged purple, (Arora).
