Treatment remains tentative; this taxon appear generally intermediate between typical barbinode and var. angustifolium. It probably occurs mostly in the Interior Low Plateaus and Ozark region. However, it has become combined by some authors with var. chapmanii or var. angustifolia. It is possible that one or more of these variants deserves species (or subspecies) status, but initial analysis of DNA at Univ. Tenn. did not reveal clear support for a simple division (B.E. Wofford & D. Estes, pers. comm.) All three of these variants differ from typical barbinode as follows (Coulter & Rose 1900, Floden 2019; F; W; M. Brock, pers. comm.): flowers creamy-white when fresh (versus sulphur-yellow), but often drying to an indistinct yellowish-brown in all taxa; leaves generally more divided (2-3 ternate versus 1-2); leaflet blades generally smaller, the largest mostly 3-5 x 1-2 cm (versus 5-8 x 2-5 cm), often proximally cleft at least half way to midrib (versus rarely so), less deep glossy green and sometimes less pubescent (but needing more careful description); plants averaging taller, up to 1-1.5 m (versus 0.5-1 m). Mature fruits average 4-6 mm long (versus 3-5 mm), with bodies becoming brownish to black (versus just dark green). Umbels tend to be wider than subtending leaves (versus as wide or less), mostly 5-7 cm wide (versus 3-5 cm). Var. garmanii typically occurs on calcareous soils in subxeric or submesic woods, usually under thin canopy or along edges. Floden (2019) and B.E. Wofford & D. Estes (pers. comm.) would group these plants under T. chapmanii (Coult. & Rose) Small. However, var. chapmanii was originally described from nw. Fl., adjacent Ga. and perhaps Ala.; (Sm); those somewhat disjunct plants appear slightly different from garmanii in foliar patterns, with generally smaller leaves and leaflets (to be described in detail). Although the degree of distinction in garmanii from chapmanii or angustifolium remains uncertain, it is clearly distinct from typical barbinode within Ky. and probably deserves species status. Distinction is especially convincing within mixed or adjacent populations, e,g. along East Fork of Indian Creek in MENI and along Jessamine Creek in JESS. Both taxa flower here mostly during mid-May to early June.