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Polemonium pulcherrimum subsp. delicatum is in the phlox family Polemoniaceae. Commonly known as Jacob’s Ladder, it is native to the western United States. Jacob’s Ladder gets its common name due to the shape of its leaflets, which are stacked similar to the rungs on a ladder. This species is an herbaceous perennial found mostly in montane areas in the understory of spruce fir forests.