Kentucky Plant Atlas




Taxonomic distinction unclear    No county information
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Fabaceae <F-Thermopsideae> Baptisia cf. minor
Baptisia minor Lehmann ?
ALI: no HAB: 10,9?, n/a, C?, 5 ABU: g6?, s1?, -4
An old coll. from HOPK (Ky.-Agr) and a recent rediscovery in MCLE (N. Crawford, pers. comm) have suggested that distinct plants may have occurred in native grassland on submesic lowland terraces and toeslopes of the Innner Shawnee Hills, with non-calcareous soil. These colls. are mapped here provisionally with "cf. aberrans" but mature pods of the MCLE plant are much smaller than typical aberrrans or minor: ca. 27-31 mm long, excluding stipe and terminal bristle (versus ca. 30-50 mm), and ca. 10 mm wide, perpendicular to suture (versus ca. 15-30 mm). Based on F, Y and other sources, typical minor is generally shorter than typical australis (ca. 0.5-1 m versus 1-1.5 m), with divaricate (versus ascending) branches, shorter petioles (up to 1-4 mm versus 5-20 mm), smaller leaflets (mostly 1.5.-4 x 0.5-1 cm versus 4-6 x 1-3 cm), shorter bracts (ca. 7-9 mm versus 10-12 mm) and perhaps shorter racemes (ca. 1-4 dm versus 2-5 dm). But it also has larger flowers (ca. 27-30 mm long versus 25 mm), longer stipes (twice calyx versus about equalling), and thicker fruits (ca. 3-6 x 1.5-3 cm versus 3-4 x 1-1.5 cm), which tend to be more asymmetric in shape.