Tall Tickseed is a native herbaceous perennial in
the Sunflower family. It can be found throughout much of Alabama.
Tall Tickseed grows along streams and rivers, in low pastures,
and in wet roadside ditches. It is a perennial with long rhizomes.
Stems are 3-6 feet in height, green in color, glabrous, often
glaucous, and unbranched below the inflorescence.
The leaves are cauline, opposite, sessile or short petiolate,
and 3 foliate. The leaflets are lanceolate to elliptic in outline,
entire, and glabrous.
The flowers are produced in heads that are arranged in
a diffuse corymb. Each head has 8-9 yellow ray flowers and 40-80
reddish disc flowers.
Fruit is an achene.