This rather poorly known species mostly occurs in woods on base-rich soils from the upper midwest to central Appalachian regions (FNA 23; W); it has just recently been discovered in Mo. (Thomas 2017). In Ky. it is largely restricted to low slopes and terraces in the northern Cliff Section and adjacent Knobs, within the Licking Rv. watershed and creeks to the north. Variation in woodii and distinction from related species may need clarification; reported 2n = 44 and 52. The coll. from BATH (KY) has been redetermined as meadii by R. Naczi, but it appears somewhat transitional to woodii.