Poison Hemlock?

[No Imagination]

Good day everyone,

First off, I know its not very good etiquette for someones first post to be a "Can you please help me identify this" - but I am a bit stuck. I am a veterinary student, and one of our projects is to collect and identify toxic plants (I've gotten 32 so far). I've done pretty good so far, but I am a bit stuck on this one.

So far, I am certain I've collected both wild parsnip and wild carrot, but I've been trying desperately to get my hands on Hemlock, I think I found it - but it doesn't quite match the description from websites or the Petersons guide book I bought - but it is very close. Unfortunately, we are marked on accuracy.

This is one of those rare occasions I don't think the socratic method will work for me ;)

A) The flowers seem to have '5' petals
B) The stem is relatively hairless and 'hollow'
C) The leaves are fern like (actually, more fern like than any pictures i've found)
D) Sent is supposed to be 'musty', but its more bitter then musty I would think
E) The plant was a bit smaller then I think it should be (3-4 feet high)
F) I may be confusing this with another plant, but I seemed to recall 'purple blotches' in some descriptions, my specimen has none!

Pictures attached. Any help/assistance would be greatly appreciated! (I am attaching only 2 and trying to keep it small. If anyone requests I can post more and higher resolution)

[KarenZone3A]

Hi there.

I think this is achillea millifolium AKA wild yarrow. not sure if it is toxic but I do not think so.
K

[No Imagination]

Thank you Karen,

After you suggested it I googled it, and it seems you nailed it.

Oh well, I will keep trying! I will post a picture if I every actually do get some. Off to find myself some snake root!