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Species Information
Summary: Features include a saucer-shaped to shallow cup-shaped fruiting body with a red orange spore-bearing upper surface that becomes yellowish or brownish when old, the cup exterior with hairs of two types (far-projecting ones particularly at the margin and shorter, stellate ones toward the base of the cup), lack of a stem, growth on dung, and microscopic characters.
Cheilymenia stercorea is found in BC, WA, OR, ID, and also CA, CO, and NV, (Larsen), and BC, CA, CO, MT, NY, and OH, (Denison).
Upper surface: 0.05-0.3cm, saucer-shaped to shallow cup-shaped, red orange, becoming yellowish or brownish when old, (Denison), 0.1-0.3cm, conic with flat disc, spore-bearing upper surface orange; margin "ciliated with far-projecting light brown hairs", (Breitenbach)
Underside: hairs of two types: bristle-like rooting hairs at margin, mingled in lower part with stellate hairs, (Denison), paler than spore-bearing surface, "loosely set with long, pointed, upright, bristly, brownish hairs, somewhat felty toward the base with mostly short hairs", (Breitenbach)
Stem: none (Denison)
Microscopic: spores (12)14-18(19) x (6)8-10(11) microns, elliptic, smooth, without oil droplets; asci 175-220 x 9-12 microns, cylindric, not blueing in iodine; paraphyses slender, narrowly clavate in upper part, 3-5 microns broad at top, simple or sparingly branched in lower part, with a few widely spaced septa, [presumably when fresh there are granules or droplets of yellow to red pigmented material]; rooting hairs 100-300 microns long, 12-24 microns wide near base, medium brown, "heavy-walled, 5-12 septate, unbranched, with a number of bulbous rootlike processes at base"; stellate hairs "pale yellow to medium brown, consisting of a swollen basal cell from which project several (2-5) pointed, septate, stiff arms, the arms highly variable in length", (Denison), spores 17.5-19 x 8-9 microns, elliptic, smooth, colorless, without droplets, uniseriate; asci 8-spored, 225-230 x 12-13 microns, inamyloid; paraphyses slender, septate, forked; hairs on the margin and upper part of the fruitbody to 700 x 10-20 microns, "straight, ending in a point, multiply septate, base with multiply forked to lobed roots, brownish"; hairs toward the base of fruitbody "stellate, multiply forked and septate, also brownish", (Breitenbach)
Habitat / Range
scattered to gregarious on dung, (Denison), single or gregarious on cow and deer manure, perhaps on dung of other animals, (Breitenbach)
Similar Species
Cheilymenia fimicola is larger, with hairs that differ microscopically, (Denison). Cheilymenia theleboloides has scattered inconspicuous hairs that differ microscopically, (Denison). Scutellinia crucipila has similar basal hairs but is larger, grows on soil, is not ciliated with bristles, and has punctate spores under oil immersion, (Breitenbach).
