I've got a strain that looks like that. It's probably an indica dominant. Short and bushy; could even be an auto; only time will tell though. This kind of plant structure is desireable because you'll be able to train it into a nice canopy; it's basically a Low Stress Trained plant but w/o actually LST'ing it. Nice.
Side note: I'm flowered for 5 weeks under MH and switched to HPS to finish; these buds are smaller but sooo frosty. MH INCREASES CANNABINOIDS DURING IN FLOWER