IMG 2010-May22 at Portage Sandhills:  Plains prickly-pear-cactus (Opuntia polyacantha) with Pixie-cup lichen (Cladonia sp)
2010-May22 at Portage Sandhills:  Plains prickly-pear-cactus (Opuntia polyacantha) with Pixie-cup lichen (Cladonia sp)