Rudbeckia hirta var. hirta T. V. Moore, Perdue
R. hirta var. angustifolia Linnaeus
R. hirta var. pulcherrima Farwell
Asteraceae (Composite Sunflower) Family
Plant is an upright, many branched, hairy perennial or biennial with a long taproot. Its preferred habitat is prairies, roadsides and woodland edges. Distribution is throughout the Escambia region.
Leaves are alternate; margins smooth to toothed; tapering to the tip; widest at the center, or ovate to lance-like; base is wedge-shaped or rounded.
Flowers are terminal; a single head per stalk; symmetrical in shape. Disc flowers contains both stamens and pistils (bisexual) and are dark brown. Ray flowers are yellow. Flowers occur in the summer.
Seed is an achene in which the outer layer is fused to it.
This native biennial forms a rosette of leaves the first year. Flowers are produced in the second year of growth. Black-eyed Susan is the state flower of Maryland.