are there any species similar to it?
L. echinatum
Lycoperdon echinatum
"Lycoperdon pulcherrimum" closely resembles "L. echinatum", but its spines are stouter, do not turn brown in age, and the surface of the fruit body underneath the spines is smooth, not pitted. 
what is lycoperdon echinatum? A type of puffball mushroom. where is it found? Africa, Europe, Central America, and North America
wiki:6198690
Lycoperdon echinatum [SEP] Similar species
echinatum", but the former has a smooth outer surface when mature, and has spores attached to a pedicel (a narrow extension of the basidium on which the sterigmata and spores are formed) that is about 4–5 times as long as the spore. "Lycoperdon compactum", found only in New Zealand, also resembles "L. echinatum" in appearance, but differs in having smaller spores, capillitia that are hyaline (translucent) and septate (with partitions that divide the capillitia into compartments).