How to tell Spring pinkgill from Split fibrecap

Cap 1.5-5 cm across, bell-shaped or conical with a sharp umbo in the center, opening out with age. Color dark grayish-brown, chocolate-brown, with a characteristic metallic-gray tint in wet weather. The surface is hygrophanous (darker when wet, lighter in dry weather), fibrous, sometimes with tiny scales in the center. The cap margin often has fine radial striations.

Cap 2-7 cm across; in young mushrooms conical or bell-shaped with a pointed knob, later it opens out, but the knob stays. Color yellowish-ochre, straw-yellow, light brown in old mushrooms. The surface has a distinctive radially fibrous pattern, and when mature — deep radial cracks from the center to the edge (hence the species name rimosum — "cracked"). The margin is often split and upturned.

Gills. The gills are fairly sparse, notched where they meet the stem; in young mushrooms they are whitish-gray, with age pinkish-brown (the typical pink tone of Entoloma). Spore print pinkish-brown — the main feature of the genus.

Gilled hymenophore. Gills fairly crowded, notched where they meet the stem. In young mushrooms they are whitish-gray, turning olive-brown or tobacco-colored with age. Spore print tobacco-brown or tobacco-colored — typical of the whole genus Inocybe.

Stem 3-8 cm tall, 0.2-0.5 cm thick, thin, cylindrical, often wavy. Color grayish-brown to dark gray, paler toward the top, with a whitish mealy bloom. The surface is lengthwise-fibrous, with no ring. At the base — a faint white mycelial fuzz.

Stem 3-8 cm tall, 0.4-1 cm thick, cylindrical, even or slightly thickened toward the base. Whitish to yellowish, paler at the top. Surface lengthwise fibrous, no ring. Flesh of the stem firm, hollow in old mushrooms.

Flesh is thin, grayish, watery, almost translucent in wet weather. Does not change color when cut.

Flesh thin, whitish to yellowish, does not change color when cut.

Faint, mealy or mealy-musty — typical of the genus Entoloma. In old mushrooms it's sourish. The taste is mild, bland, like raw flour.

Distinctly spermatic or stale and musty — typical of the whole genus Inocybe. This is an important diagnostic sign: if an unknown brownish mushroom has this unpleasant smell, throw it away without hesitation. Some sources describe the smell as "stale flour". The taste is mild or slightly bitter — do NOT rely on taste.