|Meadow of Rudbeckia californica flowers|
Habitat and range
It is an erect perennial herb growing from a thick rhizome, its stem exceeding one meter in maximum height and sometimes approaching two meters. It usually has no branches.
Most of the large leaves are basal, with a few alternately arranged along the stem. The leaves can be up to 30 centimeters long and are lance-shaped to oval, smooth-edged or lobed.
Inflorescence and fruit
The inflorescence is a usually solitary sunflower-like flower head with a base up to 6 centimeters wide lined with several ray florets, each of which are 2 to 6 centimeters long. The yellow ray florets extend outwards and then become reflexed, pointing back along the stem. The disc florets filling the button-shaped to conical to cylindrical center of the head are greenish yellow.
|This Heliantheae article is a stub. You can help Wikipedia by expanding it.|