R.Van Buren & K.T.Harper (L.D.Benson) 1948 - Buren RV, Harper KT, Andersen WR, Stanton DJ, Seyoum S, England JL (1994) Evaluating the Relationship of Autumn Buttercup (Ranunculus acriformis var. aestivalis) to Some Close Congeners Using Random Amplified Polymorphic DNA. American Journal of Botany 81(4): 514. doi: 10.2307/2445501.
There is no corrections for Ranunculus aestivalis yet.