Clintonia borealis   Here’s a beautiful mountain wildflower that I’ve found growing in sheltered places beneath the rocky slopes of Bald Knob on Salt Pond Mountain.  The leaves of Yellow Clintonia (or Blue-bead Lily) somewhat resemble robust orchid leaves; they are 6 to 10-inches long, elliptical, and shiny. Each individual plant bears two to five of these large basal leaves. In…