Conocybe sp.

The fruitbody is a mushroom, with a cap atop a central stem. The mushrooms are mostly small and fragile, with caps typically less than 2 centimetres in diameter, smooth, dry, conical and white(ish) to brown. The gills are light brown. The stem may grow to several centimetres lung but is only a few millimetres wide and is white(ish) to brown, smooth and dry.

 Spore print: reddish-brown.

 There is neither a partial nor a universal veil.

 The mushrooms may appear in a variety of habitats and are often seen in lawns, playing fields and the like.   

 Look-alikes

The mushrooms are nondescript. However, if you see such a small, fragile mushroom in a lawn it is very likely a species of  Conocybe. Bolbitius is a related genus that also appears in grassy areas, but it has a slimy cap and the commonly seen Bolbitius titubans has a yellow cap.