Plant identification

Hi,
I've been exploring plant identification with a focus on native species.  Now that I'm starting to see flowering plants coming up on my property I'm trying to identify some of them.  I'm in Eastern Douglas County, Colorado.  I think I'm starting with a pretty hard one, but not much else is in bloom yet ... so here goes.  Pictures attached.

Given the compound umbel I'm thinking it's in the parsley family, which could make it really toxic.  Valerian also seemed like a possibility.  I see five white petals with some purple, no easily identifiable sepals, no visible pistils, and what appears to be between 1 and 3 purple stamens.  The leaves appear to be in a basal and opposite configuration.  The stem and leaves both appear fuzzy, and the stem is purpleish.  

I don't have any intention of eating this plant, being so inexperienced at this ... but it does grow in my dog run, so that concerns me a bit.  Anyone have any ideas?

Thanks!

Hi Jason,

I agree with you about the compound umbel and it being in the parsley family. After spending about 20 minutes looking at various photos online, I'm stumped. Nothing I can find seems to fit the bill. The purple stamens are what throw me off.

Now I want to know the answer too! Hopefully someone with more experience that me will chime in!

I couldn't give up!

Is this it!? http://www.americansouthwest.net/plants/wildflowers/orogenia-linearifolia.html

Is this it!? http://www.americansouthwest.net/plants/wildflowers/orogenia-linearifolia.html

The flowers look really similar, but the leaves in the pictures look pretty different.  I like that website though, thanks for the link.  That lead me to this one: http://www.americansouthwest.net/plants/wildflowers/lomatium-nevadense.html

The leaves are still a little different.  I looked in a list of plants found in Colorado to see if Lomatium Nevadense is there and didn't see it, but found Lomatium Orientale (Northern Idaho Biscuitroot).  This looks a lot like it:
http://navigate.botanicgardens.org/weboi/oecgi2.exe/INET_ECM_DispPl?NAMENUM=29575
http://www.easterncoloradowildflowers.com/Lomatium_orientale.htm
https://www.minnesotawildflowers.info/flower/northern-idaho-biscuitroot

Seems like a pretty good match to me, but I'm still pretty new at this.

That looks like a perfect match! Good work!

http://www.easterncoloradowildflowers.com/Lomatium_orientale.htm

Got a plant for you all to try to identify. One of my colleagues found this at a site we monitor. It is a shrub and seemed to be spreading. I'm afraid I don't have too much info about since I was not at the site.

Daphne mezereum

Thanks!