Macroscopic features

  Closed pileus up to 18 x 12 mm, dirty red-brown, cinnamon, ochre to rather pale (yellow-)brown (Mu. 7.5 YR 3/2, 4/6, 10 YR 5/3, 5/6, 6-8/6 to 2.5 Y 5/4, K. & W. 6D6, 5D5, 4A4) at centre, paler towards margin (Mu. 7.5 YR 6/5, 10 YR 5/5, 6/2-3, 7/3, 5/2, 2.5 Y 7-8/4, 6/2, K. & W. 6C4-5, 5D6-7 to 3-4, 5B3, 4B4, 4A3); up to 35 mm wide when expanded. Lamellae free, white to blackish; L= 18-36, l= 0-3. Stipe 50-120 x 1-3, white to greyish-white, with base up to c. 4 mm wide, pubescent.

Microscopic features

  Spores [220,11,11] 9.3-13.1 x 5.7-7.4 µm, av. L= 10.3-12.1, av. B= 6.1-6.9 µm, Q= 1.50-1.95, av. Q= 1.65-1.90, ellipsoid to ovoid; germ pore weakly to rather strongly eccentric, c. 1.8 µm wide. Basidia 14-38 x 8-10 µm, 4-spored. Pseudoparaphyses 4-6 per basidium. Cheilocystidia globose and 20-50 µm in diam., to ellipsoid and 20-60 x 15-40 µm. Pleurocystidia absent. Pileocystidia 60-150 (-200) x 6-25 µm, lageniform with 4-8 (-10) µm wide, tapering neck. Sclerocystidia usually present. Clamp-connections present.

Habitat

  Terrestrial, usually at or near wood fragments, particularly on paths covered with wood chips. (Sub)fasciculate. Common.

Remarks

  In the Netherlands C. callinus is a common species, especially on paths covered with wood-chips. In this habitat the species is often abundant and grows in distinct fascicles.
  The colour of the pileus is in general not very dark and does not have much red in its colour. Usually the colour is yellow-brown to ochre-brown or cinnamon. The tapering pileocystidia together with the presence of sclerocystidia, which are usually present, sometimes even numerous, and the spores with a length between 10 and 13 ćm, are the most important characters of this species.