Osmorhiza aristata is a biennial herb of 30-70cm in
height found on roadsides or in wastelands, leaves are of a bi- to
tri-pinnate compound leaf, and the leaflets are egg-shaped
lanceolate, finely cleft, with coarse, short hairs on both sides.
Branch tips emerge, and small umbels and white flowers set
themselves in them with 4-10 pedicels. Involucral bracts are
slender. Bloom time: May-July. |