About Senecio integerrimus Nutt.
Senecio integerrimus Nutt. is a species of flowering plant in the aster family, with the common names lambstongue ragwort and tall western groundsel. It is native to western and central North America, where it grows in grassland, forest, and other types of habitat. This plant is a biennial or perennial herb that grows one or a few erect stems between 20 and 70 centimeters (8 to 27 and 1/2 inches) tall. It grows from a caudex with fleshy, shallow roots. Most of its leaves are basal, ranging in shape from linear to lance-shaped or triangular, with leaf blades that can reach up to 25 centimeters (10 inches) long. The above-ground plant tissue ranges from slightly hairy to woolly or cobwebby in texture. Its inflorescence holds several flower heads in a cluster; the middle, terminal head is often the largest and sits on a shorter peduncle, which gives the cluster a flat appearance. Each flower head contains many disc florets, and usually 8 or 13 ray florets that range in color from yellow to cream to white. Some flower heads do not have ray florets.
