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Species Information
Summary: Features include 1) resupinate growth on hardwood, 2) yellow fruitbodies, the surface with sparse teeth up to 0.5cm with various shapes, the margin fringed, often with rhizomorphs in the periphery, 3) spores that are round, smooth, inamyloid, cyanophilic, and thick-walled, and 4) hyphae that are richly branched and cyanophilic, with clamp connections.
It has been found in in BC and PQ, (Ginns(5)), and Europe (reported from Denmark, Germany, France, Sweden, and the United Kingdom, but rare), (Eriksson).
Fruiting body: resupinate, loosely attached; sulphur yellow, in herbarium pale ochraceous; "with mostly rather sparse teeth of variable size and shape, from cylindrical and rather blunt (raduloid) to flattened (irpicoid) or even confluent in a merulioid manner", teeth 0.2-0.5cm long, apically pilose by projecting hyphae, surface between the teeth smooth, continuous; margin fringed, often rhizomorphs in periphery and sometimes also in the wood, (Eriksson), spread out up to 15cm, soft, easily separable; lemon yellow drying cream; with scattered coarse cylindric to flattened teeth with fimbriate [fringed] apices; spore-bearing surface discontinuous showing patches of white floccose subiculum; margin thinning, white, and floccose to arachnoid [cobwebby], (Lindsey), spore deposit white (Buczacki)
Microscopic: SPORES mostly 5-6 microns in diameter, round or nearly round, with prominent apiculus, inamyloid, cyanophilic, colorless under the microscope but yellowish in mass, thick-walled, illustrated as smooth; BASIDIA 4-spored, 25-35 x 6-8 microns, "subclavate to almost cylindrical, often slightly constricted or sinuous", illustration indicates cyanophilic granulation; CYSTIDIA none; HYPHAE monomitic: hyphae mostly 4-5 microns wide, (in subiculum somewhat wider), thin-walled, (in subiculum somewhat thickened), cyanophilic, richly branched and anastomosed, with clamp connections at all septa, (Eriksson), SPORES 5-6 x 4-5 microns, nearly round to oval, inamyloid, colorless, cyanophilous, thick-walled; BASIDIA 4-spored, 25-35 x 7-8 microns, clavate, often with median constriction, with basal clamp connection; CYSTIDIA 15-35 x 4-6 microns, projecting up to 25 microns, cylindric, thin-walled, with basal clamp connection; apices of teeth completely covered with projecting hyphal ends; HYPHAE monomitic, SUBICULAR HYPHAE 3-5 microns wide, colorless, thin-walled, "abundantly nodose-septate, with frequent branching", (Lindsey), SPORES 5-7 microns in diameter (Ginns(23))
Habitat / Range
on decayed hardwood, (Eriksson), on Alnus sp. [alder], Populus sp., Ulmus sp. [elm], (Ginns(5)), aspen (Lindsey), on rotting hardwood, "typically on old stumps in woodland but also on old leaf litter, soil and woody debris and old polypore fruit bodies"; summer, fall, (Buczacki)
Similar Species
Cristinia helvetica has a buff, grandinioid rather than yellow raduloid surface, and smaller spores, (Lindsey). C. helvetica has a granulose spore-bearing surface, and ovoid to round spores 3.5-4.5(5.0) x 3-4 microns, whereas Cristina gallica has a raduloid to irpicoid hymenial surface and spores 5-7 microns in diameter, (Ginns(23)). Cristinia sonorae Nakasone & Gilb., [found in Arizona according to Ginns(5)], has a grandinioid to strongly hydnoid spore-bearing surface, ovoid to elliptic spores 4.5-5.5 x 3.5-4 microns, and leptocystidia, (Ginns(23)). However, the holotype of Cristinia sonorae Nakasone & Gilb. is said to be 2 mixed species with one part being a Hyphodontia species and the other seeming to be a Radulodon species, (Hjortstam(7)).
