J.H.Kirkbr. 1979 - Smith EB (1979) A New Variety of Galium Arkansanum (Rubiaceae) Endemic to the Ouachita Mountains of Arkansas. Brittonia 31(2): 279-283. doi: 10.2307/2806190.
There is no corrections for Raritebe palicoureoides subsp. dwyerianum yet.