Roadside Yucca "woodland" west of Maxwell Scenic Road. Images scanned from 35mm slides.
This yucca was about the only prairie plant surviving in the full shade here.
Not familiar with this sp. Soft marble seed or Hellers (?)
trunk like base which then extends to the leaves, long green leaves surrounded by sharp edges that resemble a serrated knife or dagger, leaves can also have a pale-yellow color, leaves grow in an outward direction giving it a shaggy round look, can be around 10ft tall.