Mycena clavicularis (Fr.) Gillet
no common name

Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.

Introduction to the Macrofungi


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E-Flora BC Static Map

Distribution of Mycena clavicularis
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Species Information

(0.5)1-2cm across, "convex to obtuse when young, rarely obtusely conic", becoming broadly convex or with a low obtuse umbo when old, sometimes becoming depressed on disc; not hygrophanous, dark to light gray, often bluish gray at first, margin pale gray; fading slowly to dingy yellowish or whitish; moist or lubricous but not viscid, pruinose becoming bald and wrinkled to grooved, faintly translucent-striate when moist, (Smith), 1-2cm across, "dry but readily becoming lubricous when moist", (Maas Geesteranus), dark gray to dark brown in the center, (Trudell)
thin, pliant, cartilaginous; grayish or pallid
bluntly adnate to slightly arcuate, sometimes with decurrent tooth, subdistant to distant, 15-20 reaching stem, 2-3 tiers of subgills, gills narrow to moderately broad (about 0.2cm); white when young, becoming dingy pale gray, edges pallid; edges even, (Smith), attached to somewhat decurrent; pale grayish or brownish, (Trudell)
2-5cm x 0.1-0.15cm, equal, but the base narrowed slightly or enlarged slightly, elastic, cartilaginous; bluish black to fuscous when young and fresh, usually cap-colored or paler when old, becoming slightly tinged with yellowish gray; pruinose in upper part when young, soon bald, viscid, glutinous in wet weather, some mycelium at base, (Smith), "about the same color as the cap", (Trudell)
not distinctive
not distinctive
Microscopic spores:
spores 7-8.5(9) x 3-4 microns, elliptic, amyloid, [presumably smooth]; basidia 4-spored or rarely 2-spored, 28-33 x 5-6 microns; cheilocystidia and pleurocystidia similar, scattered to numerous, (22)30-38 x 9-12(14) microns, broadly clavate, enlarged part covered with short obtuse projections, colorless; "gill trama pale vinaceous brown in iodine, subhymenium not gelatinous and gill edge not gelatinizing"; cap trama with thin, adnate, nongelatinous pellicle, hypoderm sharply differentiated, its cells 20-40 x 15-25 microns and occupying nearly half the thickness of the cap, the remaining tissue floccose and filamentous, all except the pellicle faintly vinaceous brown in iodine, (Smith), hyphae of cap cuticle 2.5-4.5 microns wide, clamped, embedded in gelatinous matter, covered with simple to branched, cylindric excrescences 0.9-20 x 0.9-1.8 microns, forming very dense masses that tend to dissolve when old, (Maas Geesteranus)
Spore deposit:
white (Phillips)

Habitat and Range

Mycena pseudoclavicularis has smooth cheilocystidia; Mycena latifolia has dry stem and the fusoid-ventricose cheilocystidia have short projections that are generally limited to the widest part; Roridomyces roridus also has dry cap and glutinous stem, but tends to be smaller, and microscopic structure of cap cuticle is different; Mycena vulgaris has different cheilocystidia and tends to fruit later in the season, after the start of colder weather
gregarious in large numbers under conifers, spring, summer and fall