It's Juniperus occidentalis is I believe. Ishi preferred it to yew for making bows, though I'm guessing that might have been due to the ease of working with it rather than its properties as a bow. I think the Indians usually backed it with sinew. I'm happy to find it, because it can be worked green. I have a buttload of yew thanks to friends and family allowing me to harvest the select best candidates. If you've never hunted for yew for bows, only one in several hundred is really ideal, plus the oddball branch to be found bow and then. But then it takes a year or more to season it before it can be worked, or you'll end up with an inferior bow. But juniper not only CAN be worked green, many bowyer's say it's BEST worked green and THEN set aside to season. This gives me something to work on while I wait for the yew to dry.
Hmm it's about time I make a tillering tree.