Screenshot coming soon.
Arrowhead is an herb in the Herbology set, entry 11 of 33, and it isn't tied to one region. Its main use is selling at a camp kitchen for credits and Trust.
No single region is listed for it, so pick it up as you come across patches. Hawkeyed marks plants on the minimap, which helps a lot.
Agoseris
Agoseris is a small herb in the Herbology set, entry 10 of 33, and it grows in the Belknap region. Its main use is selling at a camp kitchen for credits and Trust.
Bearberry
Bearberry is a dwarf berry shrub in the Herbology set, entry 1 of 33, and it grows in the Lost Lake region. Pick it for stamina cocktails or sell it at a camp kitchen.
Beargrass
Beargrass is a plant in the Herbology set, entry 12 of 33, and it grows in the Iron Butte region. Its main use is selling at a camp kitchen for credits and Trust.
Bistort
Bistort is a plant in the Herbology set, entry 13 of 33, and it grows in the Crater Lake region. Its main use is selling at a camp kitchen for credits and Trust.