Genus Lomatium Parsley Family (Apiaceae/Umbelliferae)
This is one of the largest and most common of the Lomatiums in our
area. It has many common names. I first learned it as "Wild Carrot",
because the book I was using at the time (Mountain Plants
of Northeastern Utah) called it that. The leaves look
very much like the carrot plants growing in your garden. They even
smell like carrots when crushed.
In other books this plant is called "Indian Parsley", "Giant
Parsley", "Indian Balsam", "Fernleaf Lomatium", "Carrotleaf",
and "Giant Lomatium".
The roots of this plant are edible. (The Lomatium genus is
often called "Biscuitroot" because many of its members were widely
used as food sources by the western Indian tribes.)
However, extreme care should be taken before eating any part of
a plant that resembles this one -- the leaves of the highly
poisonous plant Poison Hemlock look
very much like some of the Lomatiums.