Conocybe rostellata (Velen.) Hauskn. & Svr?ek

Diagnosis fuente:   
     Pileus 5.0–20.0 mm, at fi rst conical-campanulate to almost hemispherical, later conical-convex, conical-applanate to plano-convex, sometimes slightly umbonate, smooth, ochraceous-brown, yellowish brown to light brown, paler at margins, hygrophanous, translucently striate up to 1/2 radius and more, on drying becoming light ochraceous to greyish ochraceous. Lamellae narrowly-adnate to almost free, rather distant (L = 17–20, l = 1–3), ventricose, up to 2.0 mm wide, at fi rst pale ochraceous, later ochraceous-brown to rust-brown, with concolorous fi nely fl occulose edge. Stipe30.0–55.0 × 1.0–2.0 mm, cylindrical with clavate, often slightly swollen (up to 3.0 mm) base, hollow, longitudinally pubescent-striate, at fi rst whitish or pale ochraceous, later darkening from base upwards to pale brown or light brown, at base up to reddishbrown. Flesh in pileus up to 1.5 mm broad, whitish with ochraceous-brown tinge, in stipe darker, pale brownish, at base up to light reddish-brown. Taste and smell indistinct. Spore-print rust-brown.
      Spores 7.0–9.0 × 4.5–5.5 μm (n = 40), Q = 1.44–1.70; av. Ls = 8.2±0.59 μm, av. B= 5.2±0.32 μm, av. Q = 1.57±0.06; in front view ellipsoid-ovate, narrowly ellipsoid and ellipsoid, in side view ellipsoid, slightly fl attened ventrally, sometimes nearly amygdaloid, germ-pore central, up to 1.0–1.5 μm wide, rather thin-walled, pale brownish yellow in water, germ-pore central, up to 1.0–1.5 μm wide, rather thin-walled, pale brownish yellow in water, yellow-brown in alkali. Basidia 15.0–24.0 × 6.0–8.0 μm, clavate, 4-spored. Cheilocystidia17.0–21.0 × 6.5–7.5 μm, lecythiform, neck up to 3.5 × 2.0 μm, head 3.5–4.5 μm wide. Pleurocystidia absent. Pileocystidia hair-like, up to 36.0 × 2.5–4.0 μm, rather numerous. Caulocystidia of two types: a) ellipsoid, globose-clavate, clavate, utriform and lageniform, 7.0–36.0 × 5.0–7.0 μm; b) hair-like, up to 50.0 × 1.5–2.0 μm. Pileipellis hymeniform, consisting of spheropedunculate and pyriform elements 10.0–35.0 μm wide. Clamp connections present. Ammoniacal reaction negative.
Habitat and distribution. Solitary or in small groups on soil, mainly in grasslands(meadows, pastures, from spring to autumn.