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Species Information
Summary: Section Nolanea. Nolanea hebes is recognized by size, a dark brown cap, a slender stem with scant basal mycelium, a rancid-farinaceous odor, and spores with average length in a given collection less than 10.0 microns and average width less than 7.4 microns. The description is derived from Largent(1) except where noted. Nolanea hebes is common in the western United States.
Collections were studied from BC, WA, ID, CA, and MT, (Largent). It is also found in Europe.
Cap: 1-2cm across, convex, acutely umbonate, margin incurved then decurved [downcurved]; hygrophanous, dark gray brown to almost fuscous, remaining so on disc and elsewhere fading to medium brown, with the hygrophanous areas near orangish white to brownish orange; dull, bald, margin "entire then somewhat and minutely fringed in some", translucent-striate to the disc
Flesh: up to 0.075cm near gill attachment; colored as cap surface
Gills: "adnexed, subdistant, moderately broad to broad", 0.25-0.5cm broad; pallid to pale brown, [presumably becoming pinkish], edges lighter to colored as faces, (Largent), grayish (Courtecuisse)
Stem: 3.5-6cm x 0.15-0.3cm, equal, round in cross-section, not fragile; near orange brown then turning dark brown from base upward; "hardly to slightly longitudinally striate", basal mycelium absent to very scarce, (Largent), brownish silvery gray, base white, (Courtecuisse)
Microscopic spores: spores 8.1-11.5 x 5.1-8.3 microns, 5-6 sided, somewhat indistinctly angular, [smooth, inamyloid], average length in a given collection 9.2-10.0 microns, average width in a given collection 6.2-7.2 microns; basidia 4-spored, 27.6-39.0 x 6.8-11.7 microns; pleurocystidia absent, cheilocystidia "abundant and nearly forming a sterile layer", 24.1-37.4 x 2.8-8.7 microns, cylindroclavate, somewhat strangulated, and subcapitate; pigmentation intracellular and often granular in outer parts of suprapellis of cap, coarse, strong, and incrusted externally on more slender hyphae throughout subpellis and cap trama as well as on some of broad hyphae in subpellis; clamp connections absent in cap cuticle, "present and often difficult to see at base of basidia and cheilocystidia"
Spore deposit: pink (Buczacki)
Habitat / Range
"solitary to scattered in humus or in grass near or under various conifers, specifically Douglas Fir and Coast Redwood as well as near or under Red Alder", (Largent), fall (Buczacki)
Similar Species
Nolanea hirtipes is larger, with abundant basal tomentum, and has larger spores with an average length in a given collection greater than 10.0 microns and average width in a given collection greater than 7.4 microns, and abundant basal mycelium, (Largent). Nolanea pseudohirtipes of California has a fuscous cap that is translucent-striate only at margin, a larger stem 4.5-12cm x 0.3-0.6cm at the top, and larger spores with average spore length in a given collection greater than 10.0 microns and average spore width in a given collection greater than 7.2 microns, (Largent), Nolanea obscurata lacks cheilocystidia and has intracellular and weakly incrusted pigmentation, (Largent).
