280 days of Urbpandemonium #208
Almost identical to the gem-studded puffball, but smoother and with a greater taste for wood, is the pear-shaped puffball Lycoperdon pyriforme*. It's generally found as seen here, in its hundreds on a big fallen tree. These are at peak puffability, with large open pores at the center already discharging spores.
* Pear-shaped wolf fart.