In the Company of Plants and Rocks

Big toes! Huge bird!! Along the rim of Bull Canyon, on the north slope of the La Sal Mountains in southeast Utah, my field assistant and I f...

"It is worth clarifying that these plants are not clovers ." (Photo by  Bill Dodd ). For July, South Dakota's fern-of-the-mont...

Castle Valley, 20 miles east of Moab, UT; Round Mountain rises from the valley floor on the right. The Colorado Plateau is a thick block of ...

Left,  Polypodium saximontanum , leaves to 25 cm long ( Matt Berger ); right,  P. virginianum , leaves to 40 cm long. For May, the South Dak...