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Species Information
Summary: Features include 1) resupinate growth on wood, 2) a fruitbody that is whitish to pale ochraceous, the surface netted to floccose or granular, the margin indistinct to fibrillose, and the subiculum often with rhizomorphs, 3) spores that are small, nearly round, thick-walled, and cyanophilic, 4) basidia that are short, with cyanophilic granules (in young basidia), and 5) a monomitic hyphal system, the hyphae short-celled with clamp connections.
It has been found in in BC, ON, PQ, IA, and WI, (Ginns(5)). It also occurs in Europe including Switzerland, (Breitenbach), and all forested parts of N. Europe (Eriksson).
Fruiting body: resupinate, loosely attached and of soft consistency; whitish to pale ochraceous; reticulate [netted], floccose to grandinioid [granular], shrinking on drying and then more or less porose; margin "indeterminate to irregularly fibrillose"; "in periphery, subiculum and substrate often with thin, ochraceous rhizomorphs", (Eriksson), resupinate, forming thin patches several centimeters across, loosely attached, consistency membranous and soft; white to cream; smooth to finely reticulate [netted] and slightly verrucose [warty]; margin filamentous, with rhizomorphs in subiculum, (Breitenbach), spore deposit white (Buczacki)
Microscopic: SPORES 3.5-4.5(5) x 3-4 microns, oboval to nearly round or round, with small apiculus, thick-walled, illustrated as smooth, strongly cyanophilic, inamyloid, mostly with one droplet when fresh; BASIDIA normally 4-spored, 15-25 x 5-7 microns, subclavate to subcylindric, with oil droplets, with basal clamp connection; CYSTIDIA none; HYPHAE monomitic: hyphae 2-7 microns wide, thin-walled, "mostly shortcelled, with clamps at all septa", (Eriksson), SPORES 3.5-4 x 3-3.5 microns, nearly round, smooth, inamyloid, colorless, thick-walled, cyanophilic; BASIDIA 4-spored, 16-24 x 5-6.5 microns, cylindric, contents with cyanophilic granules, with basal clamp connection; CYSTIDIA none; HYPHAE monomitic: 2-6 microns wide, thin-walled, relatively short-celled, septa with clamp connections, (Breitenbach), SPORES 4-4.5 x 3-4 microns, (Lindsey)
Habitat / Range
on decayed wood of hardwoods, sometimes of conifers, sometimes on burnt wood, (Eriksson), on hardwoods, associated with a white rot (Ginns(5)), on dead hardwood, more rarely on conifer wood, summer to fall, (Breitenbach), on rotting wood and woody debris of hardwoods and conifers, "also on leaf litter and underlying soil, herbaceous debris, old polypore fruitbodies and other organic remains", (Buczacki)
Similar Species
Cristinia eichleri has a yellow raduloid rather than a buff grandinioid surface, and spores are larger, (Lindsey). C. eichleri has a raduloid to irpicoid hymenial surface and spores 5-7 microns in diameter, whereas Cristinia helvetica has a granulose spore-bearing surface, and ovoid to round spores 3.5-4.5(5.0) x 3-4 microns, (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 two mixed species with one part being a Hyphodontia species and the other seeming to be a Radulodon species, (Hjortstam(7)).
