Mapping is tentative, and includes records of colorea (mostly Appalachian) pending deeper revision. O. florida is a widely scattered variable southeastern species, especially on sandy soils of the Coastal Plan, but it has often been confused with other taxa. It is close to colorea, which appears somewhat transitional from florida to macrantha (W; Nesom 2009, Nesom et al. 2014). Nesom et al. (2014) noted: "Intermediates apparently occur where the ranges of eastern ... florida and ... colorea come into contact." Typical florida appears close to stricta but usually less robust (mostly 8-30 cm tall versus 20-60 cm), with smaller leaflets (mostly 4-15 mm long versus 8-30 mm), and with fewer flowers per cyme (mostly 1-3 versus 5-7). Seeds are brown (as usually in stricta), without paler ridges as in most related species (Lovett-Doust et al. 1985). Also, florida is sparsely covered with non-septate hairs or glabrous (versus hairy or glabrous, usually with some septate hairs in stricta), and it develops taproots (W), "often producing lignescent stolon" (versus "herbaceous to lignescent rhizomes" in stricta). Nesom et al. (2014) did not cite colls. of typical florida from Ky., but they did map it from nearby in Mo. and Tenn. Records mapped here are from varied sources, sometimes with synonyms. There are reported colls. from CARL, GRAV, HICK, LYON and ROWA, mostly under the synonym O. filipes Small or related combinations (Gm, B, M). There are also colls. from BOYD (SMU), MENI (APSC) and WHIT (T. Romano, pers. comm.) that have been referred to colorea. Nesom et al (2014) noted that O. florida (excluding colorea) "is a species of the Atlantic states and Gulf coast but it also occurs in Texas, Louisiana, southwestern Mississippi, Arkansas, and Missouri, apparently disjunct westward from its main range. The eastern and western expressions of O. florida perhaps are different evolutionary entities. Plants ... in the western segment of the range apparently range in habit to more robust than those of the east and often appear to differ from typical O. dillenii only in vestiture."