• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Cacti - Bigroot Pricklypear

Bigroot Pricklypear - Opuntia macrorhiza
Bigroot Pricklypear - Opuntia macrorhiza
NPS Photo by Jim Pisarowicz
 
The name macrorhiza means large root.

Did You Know?

Blue Flax

Blue Flax is often considered a subspecies of the Eurasian L. perenne which is very similar. The plant is named after Meriwether Lewis. More...