Yellow Lady's Slipper Orchids

 

Every spring I make a pilgrimage into the New Jersey Pine Barrens to see pink lady's slipper orchids. It took a walk in the hardwood forest around New Hope, Pennsylvania, to find yellow ones. Click to enlage.

These are the first wild yellow lady's slippers I've ever seen. They are not just a yellow version of pink lady's slippers; they are a different species. 

Aside from the color difference, they grow in different settings. The pink ones prefer dry, acidic habitats like pine forests. Yellow lady's slippers are found in richer, moist hardwood forest understories. Note the long spirally twisted lateral petals. And the puffy pouch. Folklore says that squirrels wear lady slipper orchids for shoes. The bunch I found had exactly four blossoms -- a perfect set.