Photo: © Steve Trudell

Inocybe calamistrata
(Fr.) Gill

Pileus: 1 - 2.5 cm broad; conic at first then convex to planar at maturity; margins inrolled at first then straight and crenulate at maturity, at times with veil remnants; surface dry, disc with recurved scales (squamulose), scales becoming more appressed towards margins; colour shades of brown, disc on young fruiting bodies yellowish brown to dark brown, fading to light brown towards margins, disc on mature fruiting bodies dark brown, fading to pale brown towards margin; context fleshy, yellowish to light brown, unchanging, thin, 3 - 4 mm at junction of stipe; taste mild; odour oily to fishy.

Lamellae: Ascending, average to distant, ventricose, 1.0 cm broad; edges even at first then minutely serrate, marginate with pallid colours; pallid to yellowish white when young, becoming yellowish grey to brownish orange when mature, mottled with dark brown colours; with 1 - 3 lamellulae.

Stipe: 4 - 6 cm long X 0.3 - 0.6 cm wide at apex, 0.3 - 0.8 cm wide at base; equal to tapering upwards; surface dry, firm, pruinose to scabrous, at apex becoming scabrous to lanuginose at base; when young yellowish grey on apex, dark brown on base, when mature evenly light to dark brown with dark blue green colours on base; context solid at first then becoming hollow, when young pallid, evenly darkening to light brown when mature, unchanging.

Microcharacteristics: Spore print brown; spores 8.1 - 11.1 X 5.2 - 5.9 µm, subellipsoid to cylindric, smooth; hymenial cystidia club shaped and thin walled.

Comments: This species is easily recognized by its scaly cap and dark brown stipe with the greenish blue colour at its base. Its odour is typically fishy. While this species is reported to have pinkish vinaceous colours when bruised on the context of the stipe, this characteristic has not been observed in specimens collected in these forests.

Further Reading:

Kuyper, T.W. 1986. A revision of the genus Inocybe in Europe. I. Subgenus Inosperma and the smooth-spored species of subgenus Inocybe. Rijksherbarium, Leiden, Nederlands. pp 247.