Panaeolus semiovatus

Cortinarius husseyiKey to Gilled Mushrooms     Key
This is a key to gilled mushrooms, that is, mushrooms having a definite cap with a fertile surface consisting of gills. The fruiting body usually also has a stem, although that may be lateral or absent (usually, then, the mushroom is growing from wood). You can use this key to identify mushrooms that you find.

TricholomaAgaricales     Order
Fruiting body containing fibers (usually in the stalk)

Hypholoma capnoidesBlack Spored     Suborder
Spore print black, very dark brown, purplish black, or dark purplish brown, but not fitting the Gomphidiaceae
Gills usually light grey, becoming black from spores only when very mature

Panaeolus     Genus
Gills with a mottled appearance, since the spores mature (and hence darken the gills) in clumps, not evenly
Cap usually rounded, like half of an egg, and colored some shade(s) of gray and/or brown
Growing on manure or compost
Links from Look-alikes
Psathyrella     Genus
Psathyrella hydrophila
Cap up to 2" across; glabrous; often very fragile; some shade (or shades) of brown or gray; usually hygrophanous; sometimes wrinkled (as in the photo)
Spore print usually dark purplish brown
With a universal veil that usually persists as a few small, white fragments on the stem, cap, and hanging from the cap margin
On very well-decayed wood or enriched soil, sometimes in lawns, sometimes in large troops
Cap usually almost flat at maturity

Panaeolus semiovatus     (Sowerby: Fries) S. Lundell & Nannfeldt

Here are the characters that distinguish this species from the others in its group. For its more general characters, see higher up on the page.
If there's just a few words or a microscopic feature here, a more thorough description can be found above.


Microscropic Characters