Mapping here is provisional; see also notes under americana and biltmoreana. F. smallii was reported to range widely across eastern states south of the Great Lakes and New England (Nesom 2010c). Compared to biltmoreana, these trees usually have glabrous twigs, petioles and rachises (versus sparsely to densely hairy); Nesom reported that fruits tend to be smaller, but Campbell (2017) could find no significant difference. In Ky. leaflets are usually pubescent below, relatively large and bluish (like biltmoreana but unlike americana), but there is much variation in these characters. Although Nesom (2010c) indicated that "smallii" is tetraploid, recent testing with flow cytometry has shown that all submitted specimens so far are hexaploids, as in biltmoreana, and both taxa are often intermixed (Campbell 2017, Whittemore et al. 2018). It is thus reasonable to treat these trees as a relatively smooth variety of biltmoreana. Some mapping here is based on Nesom's data (triangles), pending further study. More uncertain records (open dots) are based on colls. without fruits but that generally match var. subcoriacea based on leaves and twigs. This taxon appears to be widespread in Ky., especially in warmer regions, and at least as frequent as typical americana. However, fruiting or flowering specimens form a smaller percentage of colls. (EKY, KY): ca. 10-20% versus 20-30% of americana.