About Angelica lineariloba A.Gray
Angelica lineariloba is a species of the Angelica genus, commonly called poison angelica or Sierra angelica. It is native to the Sierra Nevada, as well as adjacent slopes and flats in California and western Nevada, where it grows at elevations between 6000 and 10,600 feet. This is a perennial herb with a taproot that grows an erect, hollow stem that reaches a maximum height of about 1.5 meters. Its large, feathery leaves are composed of many highly dissected leaflets, which range from linear to threadlike in shape. The inflorescence is a compound umbel that can have up to 40 rays holding clusters of small white to cream flowers. Papery sheaths form at the base of each petiole where it branches from the stem. This plant is generally similar in appearance to other large umbellifers: cow parsnip and swamp whiteheads. However, cow parsnip has large lobed but undivided leaves, while swamp whiteheads have pinnate leaves and individual dense, round flowerhead clusters.