A. Cornette and D. Dourson (pers. comm.) have observed some distinct plants of Clintonia on a NE-facing slope below sandstone cliffs above Clear Branch in POWE, intermixed with a large population of typical umbellulata. These plants have unusually short, broadly ovate to suborbicular leaves (versus oblong to ovate-elliptic), with largely glabrous margins (versus with 2-4 mm long cilia) and usually purplish-striped bases (versus green); stems are glabrous (versus pubescent). Its petals have strongly purple-tinged apices (versus white or slightly purple-tinged), stigmas are slightly more exerted; fruits may be generally black. Flowers appear in mid-May (ca. 16th to 23rd ), one to two weeks later than typical umbellulata. These plants might suggested a transition to the more northern C. borealis (Ait.) Raf., which also has relatively short rounded leaves but yellow flowers and blue berries (versus black or dark blue). However, there is no definitive evidence of intergradation between umbellulata and borealis (FNA 26). Some borealis has 2n = 32 reported, in addition to 2n = 28; in all other Clintonia species of North America, reported 2n =28.