a solitary specimen growing in grass, cap 30mm across - stipe 50mm
i think its a Panaeolus sp but not at all sure, it has that mottled look to the gills that Panaeolus have, which makes me think it is a Panaeolus sp,
any pointers in the right direction would be a great help,

the spore print appears a more reddish brown than the photo shows
apologies for the poor quality of the pic of the spores, im still wrestling with the scope, and its the best i can do as yet

)