Pseudosperma obsoletum

Occurring in various woodland types as well as in riparian zones under broadleaved trees, formerly known as Inocybe obsoleta, with a conical to expanded pileus bearing an acute umbo, 1.5 to 4.5 cm in diameter, cream-coloured, darker at the disc, radially rimose/fibrillose, adnate cream to greyish-brown lamellae, a solid cylindrical cream stipe with whitish longitudinal fibrils, faintly spermatic odour, and mild taste.

Pileipellis a cutis of parallel cylindrical hyphae 4 to 10 µm wide, containing pale brown intracellular pigment, septate with clamp connections.

Caulocystidia present particularly at the stipe apex, cylindrical to fusiform, with rounded apices.

Cheilocystidia abundant, clavate, cylindrical to lageniform, thin-walled, 25 to 50 µm long and 8 to 18 µm wide.

Pleurocystidia absent.

Basidia clavate, 35 to 40 µm long, 10 to 12 µm wide, clamped at the base, 4-spored.

Spores ellipsoidal, flattened on one side (phaseoliform), smooth- and moderately thick-walled, yellowish-brown under the microscope, 9 to 12 µm long, 5 to 6.5 µm wide, with an inconspicuous apiculus at one pole, containing oil droplets.

Herbarium material available: JTP2599/25.