tree ID (Pics of leaves added) ACTUAL ANSWER!!!

[Kountry83]

Its probably this : Salix orestera is a species of willow known by the common name Sierra willow, or gray-leafed Sierra willow. It is native to the Sierra Nevada of California and western Nevada, where it grows in moist areas in high mountain subalpine and alpine climates. It can also be found in Oregon

Hope that helps 

[Acutus]

sierra willow is more of a tree

Oops got distracted as I was posting this I meant more of a shrub not a tree.

[Almostpighunter]

Wow, well I spoke with the landscaping company that put it in when we first moved into the house. The tree is AFRICAN SUMAC. Geez, they really go far and wide to find trees that will survive here in the desert. I have no idea if this is any kind of derivitive of willow or pepper tree but at least we have an answer. It seems REALLY hard to split/cut but that doesn't necessarily mean its any good for bow wood. Still, I'm cutting that one trunk down and as I don't like to waste wood an attempt will be made. Let you know my progress. - Mike

[Pat B]

Mike, did they give you a botanical name. Common names are not reliable for ID purposes.

[Acutus]

Guess that's why my books never showed it! LOL I agree with Pat though. A scientific name would allow you to find out more about it.

[DarkSoul]

Rhus lancea is the botanical name. It seems to match the Google pics I can find. I never thought it would be a sumac species, so it surprises me!

The wood is hard, tough and durable with a reddish brown colour, close grained and heavy (air-dry 1040kg/m3)

Sounds good

[Almostpighunter]

Just looked up the scientific name and found that Darksoul beat me to it  . Also found out it is a relative (or in the same tree species group) as Cashew. Things might be looking up for bow making.