Back at the bog, as Rose Pogonia blossoms began to wither, the bud-topped stalks of White-fringed Bog-orchid (Platanthera blephariglottis) were rising to the occasion. By the following week, many long-spurred, fringed-lower-lip flowers had opened, with many more on the way. Often living alongside Sphagnum moss, this acidic soil specialist prefers moist sites.
Identifying this plant was straight-forward using Newcomb's Wildflower Guide (Flower type: Irregular Flowers; Plant type: Wildflower with Alternate Leaves; Leaf type: Leaves Entire) and Go Botany's simple key to New England Orchids. You can find more photos of this white-flowered beauty at Go Botany. (To view the following images in full-size, click here.)