Fennel vs Dog Fennel

Is the fennel that keeps being suggested in guilds the same thing as dog fennel that we have in the south? When I hear fennel, I think of Dog fennel but it doesn't seem to describe the same thing.

I am interested in adding it to my guild but I can't figure out if this is a similar organism. Anyone know?

Dog fennel - http://pics.davesgarden.com/pics/2005/08/12/frostweed/92c7ae.jpg
Fennel image search - http://www.google.com/search?q=fennel&safe=active&rlz=1c1chfx_enus562us562&es_sm=93&source=lnms&tbm=isch&sa=x&ei=tlzeu-geo4ihsqscz4coba&ved=0cagq_auoaq&biw=1422&bih=730&dpr=0.9&surl=1

That "dog fennel" is not the fennel in the other pic 99% sure.
however it may still do a similar thing, does it have a tap root and smell of aniseed and have umbel flowers that hoverflies like?

Whelp. I have jumped in the deep end. I have no idea what you said. Does it smell like what and look like who? To be honest, I don't think I've seen it flower. I'll let it grow and make sure but I've never recalled a flower from these.

Dog fennel, or dogweeds as we called them growing up, have very many, very small flowers, but are not the anise/licorice tasting plant that I want in my garden. Butterflies or their younger incarnations love them and like to put cocoons on them... if my inner child remembers correctly.

Well.. I feel obligated to share something here... I spoke when I had no idea about fennel being added to guilds. I just saw a post on another forum where dog fennel had taken up residence in the walkways of a normally kempt garden and insect pests were not their usual pesty selves. Okay... now I'm interested in seeing if they keep squash bugs away from my squash. Next year I suppose.. unless I find a likely potential transplant victim that won't mind a severed tap root too much.

Dog fennel is very toxic, though tasty