got a pic?
If you used a spore syringe, then it contained millions of spores that could all produce random genetics. "strains" are pretty much a load of BS unless you have cloned the tissues of an isolate and inoculate your spawn material with an agar wedge. However, genetics from a species collected from a certain location tend to have similar growth patterns and genetic expectations for the first few generations - but mutation and adaptation will alter genetics of a "strain."
Spores are like sperm and eggs - though there is genetic coding from the parents, and some traits will pass through, there are millions of potential chances that the genes will not be identical to the parents. Just as each of your sperm or eggs will have a slight variation and produce different genetics in your offspring. Mushrooms are quick to adapt to their new environments. Grow a certain set of genes enough in captivity, and they will loose the wild traits if you use a multispore syringe for each inoculation.