Summary:
{See also Dacrymyces Table.} Fruitbodies are orange to light yellow, and cushion-shaped to cup-shaped or slightly convoluted. Characteristic features are the presence of arthrospores in chains (spores derived from the disarticulation of a vegetative branch), thickened spore walls, size and 3-septa of basidiospores, and clampless hyphae, (Breitenbach 1986). In collections where arthrospores are absent D. stillatus can be distinguished by the 3-septate spores with thickened walls and septa, absence of conspicuous dikaryophyses, and lack of clamp connections, (McNabb 1973). "Often two forms appear together in same habitat, namely the lighter and yellower basidiospore-producing form and the darker, orange one which produces arthrospores (oidia)", (Breitenbach). Thick walls and septa of spores seem to be an inconstant feature since it may vary considerably in spores from different fruitbodies in the same collection, it also seems that septation occurs after discharge and prior to germination while the spores are trapped on the surface of the fruitbody, as 3-septation was not in a yellow spore deposit, (Reid). There are many collections from BC at the University of British Columbia.

Microscopic:
spores 14-17 x 5-6 microns, elliptic-cylindric, slightly curved, smooth, inamyloid, thick-walled, colorless, with 3 septa when mature, also arthrospores (oidia) 9-12(16) x 3-4 microns, in chains, colorless; basidia up to 50 microns, fork-shaped; cystidia not seen; hyphae 2-3 microns wide, without clamp connections, (Breitenbach), spores (9)10.5-16(17.5) x 3.5-6 microns, "curved cylindrical, occasionally ovate to subpyriform, becoming thick-walled with thick septa, tinted, apiculate", becoming 3-(4)-septate at maturity, germination by colorless, spherical to nearly spherical conidia and/or by germ tubes; probasidia 25-53 x 3-4.5 microns, cylindric-subclavate, with basal septa, becoming bifurcate; hymenium consisting of basidia and occasionally simple, cylindric dikaryophyses; internal hyphae thin-walled, smooth or roughened, septate, clamp connections absent; clamp connections not seen in any specimens by McNabb and Kennedy, but presence recorded by Brasfield, Martin and Olive; outer layers of arthrospore stage composed of chains of arthrospores, (1)-2-celled, 8-16 x 2.5-5.5 microns, arthrospores often present in separate fruitings or occasionally mixed with basidia, (McNabb), spores 15-25 x 6-9 microns, plump-allantoid, becoming 3-7(9)-septate, and producing subspherical to ovoid conidia up to 4 x 2.5 microns, (Martin)

Notes:
Distribution includes WA, OR, ID, NF, NS, NT, ON, AK, AL, AZ, CA, CO, GA, IA, LA, MO, NC, NJ, NY, OH, SC, TX, VT, and WI, (Ginns), Austria, Finland, France, Germany, Italy, Netherlands, New Zealand, Norway, Sweden, Switzerland, and the United Kingdom, (McNabb who says it is generally common), Panama, Bolivia, and also reported from Japan and South Georgia of Antarctica, (Reid), and USSR throughout (Raitviir). The records of Martin and Lowy are dubious since they report clamp connections, (Reid).

Synonyms and Alternate Names:
Dacrymyces abietinus (Pers.) J. Schroet.
Dacrymyces deliquescens (Bull. ex St. Amans) Duby sensu auct.
Sclerotium cocos Schwein.
Wolfiporia extensa (Peck) Ginns