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Species Information
Summary: Features include minute whitish fruiting bodies like tall tubular cups growing in colonies on rotting coniferous and hardwood wood and bark, with fleeting subiculum, and microscopic characters including basidia.
Henningsomyces candidus is found in BC, WA, OR, ID, and also NS, ON, PQ, AZ, CA, CO, CT, DE, FL, GA, IA, KY, LA, MA, ME, MI, MO, NC, NH, NJ, NM, NY, OH, PA, SC, TN, TX, VA, VT, and WA, (Ginns), and Bermuda, Jamaica, Panama, Trinidad, Brazil, Ecuador, Chile, Austria, Czechoslovakia, France, Germany, Hungary, Italy, Latvia, Macedonia, Netherlands, Poland, Portugal, Sweden, United Kingdom, Sri Lanka, Japan, Turkey, Algeria, Morocco, Sierra Leone, Tunisia, Australia, New Zealand, Philippines, and Tristan da Cunha, (Cooke).
Upper surface: 0.02-0.05cm in diameter, 0.02-0.08(0.3)cm tall, like a tall tubular cup, margin inrolled when dry, free to confluent, when confluent not separating without damage, (Cooke), fruitbodies "developing as individual tubes, gregarious, closely packed but easily separated"; white; 0.06-0.072cm long and 0.018-0.024cm wide, (Gilbertson), 0.05-0.1cm long and 0.02-0.04cm wide, tubular; spore-bearing surface lining the tubes white and smooth, (Buczacki)
Underside: white at first, then cream color in some specimens when dry, (Cooke), exterior farinaceous to finely tomentose under at 30x lens, (Gilbertson), "outer surface smooth to slightly roughened" (Buczacki)
Stem: appearing sessile at first (with no stem), with a stem-like base that may be half as long as the ''cup'' at maturity; with a fleeting subiculum (underlying mass of hyphae) which may not be present in some specimens, (Cooke)
Microscopic: spores 3.5-6.0 x 3.0-5.0 or 3-6 x 3-6 microns, round to nearly round, or oval, smooth, apiculate, hyaline; basidia 14.5-21 x (4-5)-7-8 microns, 2-4-spored; ''cup'' covered with a fine network of clamped hyphae 1-2 microns in diameter, finely branched, forming a dichophysoid (repeatedly dichotomously branched) pellicle dichophysoid hyphae 10-25(50) x 0.5-1.0(1.5) microns; a palisade of dichophyses around margin of ''cup'', colorless, dichotomously branched, 1-2 microns in diameter, with slender tips, (Cooke), spores 5-7 x 4-5 microns, nearly round to broadly elliptic, smooth, colorless, inamyloid; basidia 2-4 spored, 13.5-20 x 5.5-7 microns, clavate; cystidioles 18-25 x 4-6 microns, fusiform; hyphal system dimitic, generative hyphae 2-3.5 microns wide, thin-walled, with obscure clamp connections, skeletal hyphae 1-2 microns wide, making up outer tomentum, slender, nonseptate, with frequent branching, often dendritic, (Gilbertson), spores 4.5-6 x 4-5 microns, nearly round, smooth, inamyloid; basidia 4-spored, 15-20 microns, clavate; cystidia absent; hyphal system monomitic; marginal hairs "white, smooth, very finely branched", (Buczacki)
Spore Deposit: white (Buczacki)
Habitat / Range
on rotting coniferous and hardwood wood and bark (Cooke), on hardwood and conifer wood: bark and wood, barkless and decaying wood, rotten wood, twigs, dead branches, rotten logs, old plank; associated with a white rot, (Ginns), single "or in densely tufted or trooping groups" on rotting wood of hardwoods, all year, (Buczacki), spring, summer, fall, winter
Similar Species
Henningsomyces puber has dichophytic hairs except at the extreme margin, whereas H. candidus is almost bald with dichophytic hairs only in the region near the extreme margin, (Reid(4)).
