Observation 342387: Inocybe sensu lato (Site ID) (Inocybaceae)

When: 2018-11-03

Collection location: Stockbridge, Henry Co., Georgia, USA [Click for map]

Who: Chris Cassidy (cmcassidy)

No specimen available

Notes:
Under oak. Macro: Cap slightly sticky (or tacky?), but not viscid, rimose to somewhat fibrillose; gills adnate to sinuate, some with a slight decurrent tooth at the stipe apex, whitish/pallid at first, becoming buff to olivaceous, ultimately brownish; stipe smooth, pruinose at apex, equal to nearly equal, somewhat appressed fibrillose, with bulbous base Odor spermatic, and kind of similar to Russula sect. Ingratae (fishy?). Deposit brownish; Micro: Spores irregularly nodulose, around 7-9 distinct nodules, oblong, pale brownish in water, amber yellow in KOH/NH4OH and slightly dextrinoid in Melzer’s, ~ 7.0 – 10.3 × 5 – 7 (8) μm, (L’ = 8.3 μm; W’ = 6.3 μm; Q = 1.13 – 1.57; Q’ = 1.3); All cystidia metuloid; Pleurocystidia frequent, sublageniform with rounded apices to widely utriform to somewhat subpyriform, apices with encrustations, with thick walls (~ 3-4 μm near upper half and about 2 μm around mid portion and bottom half), clamps present at bases, ~ 50 – 65 × 23 – 36 μm, (L’ = 57.9 μm; W’ = 29.7 μm; Q = 1.7 – 2.4; Q’ = 1.97); Cheilocystidia abundant, sublageniform to utriform with thick walls, apices encrusted, ~ 40 – 55 × 19 – 22 μm, (L’ = 47.1 μm; W’ = 21.1 μm; Q = 1.82 – 2.53; Q’ = 2.2); Caulocystidia very similar to hymenial cystidia, present throughout entire stipe, though a bit more slender/shorter in the upper portion of the stipe, cauloparacystidia also present, generally clavate, ~ 37 – 50 × 12 – 22 μm, (L’ = 42.2 μm; W’ = 18.3 μm; Q = 1.85 – 3.42; Q’ = 2.4); pileipellis a cutis, elements brownish, some hyphae with a slight ornamentation/encrustations, ~ 6 – 8 μm wide.

Images

Caulocystidia
Caulocystidia
Caulocystidia
Caulocystidia
Caulocystidia
Caulocystidia
Cheilocystidia
Cheilocystidia
Cheilocystidia
Pleurocystidia
Pileipellis
Pileipellis

Proposed Names

57% (1)
Recognized by sight
29% (1)
Recognized by sight
Used references
Based on microscopic features
29% (1)
Recognized by sight

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