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1 Style glabrous; corolla 7-12 mm long; [FL peninsula, or historically on ballast in s. AL]. |
..2 Corolla 10-12 mm long; leaflets 4-5× as long as wide; [historically on ballast, s. AL] |
..2 Corolla 7-11 mm long; leaflets 4-20× as long as wide; [natural habitats, c. and s. peninsular FL]. |
....3 Plant finely villous or canescent; leaflets 4-7× as long as wide |
....3 Plant minutely strigose; leaflets (2.5-) 4-20× as long as wide. |
......4 Leaflets 10-20× as long as wide, without reticulate venation |
......4 Leaflets (2.5-) 4-8× as long as wide, the broader with reticulate venation interconnecting the ascending secondary veins. |
........5 Stipules 1-3 mm long; flowering in fall |
........5 Stipules 4-8 mm long; flowering in spring |
1 Style barbellate; corolla 8-20 mm long; [collectively widespread, including FL peninsula]. |
..........6 Corolla bicolored, the standard yellow and the wings pink; racemes terminal; stems erect; stamens monadelphous; leaves with (9-) 13-23 (-37) leaflets. |
............ 7 Inflorescence reduced, foliose, flowers solitary or in small clusters overtopped by leaves; plants < 25 cm tall; leaflets generally < 10 mm long and < 5 mm wide; [restricted to the West Gulf Coastal Plain of sw. GA, adjacent FL and westward] |
............ 7 Inflorescence terminal, not foliose and overtopped by leaves; plants > 25 cm tall; leaflets generally > 10 mm long and > 5 mm wide; [widespread in our area] |
..........6 Corolla unicolored, initially white or pink, darkening in age to a dark maroon or purple; racemes opposite the leaves (the uppermost appearing terminal); stems decumbent or ascending; stamens diadelphous or submonadelphous (see below); leaves with (3-) 5-23 (-27) leaflets. |
............ ..8 Upper stamen fused with the staminal sheath for part or most of its length (submonadelphous); leaves with (9-) 13-23 (-27) leaflets; [plants from s. AL westward] |
............ ..8 Upper stamen either completely separate from the staminal sheath (diadelphous) or the upper stamen fused with the staminal sheath for part or most of its length (submonadelphous) ( Tephrosia lindheimeri of TX); leaves with (3-) 5-17 (-19) leaflets; [plants collectively widespread in our area]. |
............ ....9 Upper stamen fused with the staminal sheath for part or most of its length (submonadelphous); [ec. and s. TX southwards and westwards] |
............ ....9 Upper stamen completely separate from the staminal sheath (diadelphous); [w. LA eastwards]. |
............ ......10 Inflorescences with 1-several reduced leaves; inflorescences mainly borne terminally on the principal axis or branches |
............ ......10 Inflorescences lacking leaves (sometimes with 1 reduced leaf); inflorescences mainly borne leaf-opposed. |
............ ........11 Petiole (1-) 2-4× as long as the lowest leaflets of the leaf; peduncle and rachis of inflorescence strongly flattened (2-angled, or rarely, 3-angled) in cross-section; leaflets averaging 25 mm long and 12 mm wide |
............ ........11 Petiole 1/3-1× as long as the lowest leaflets of the leaf; peduncle and rachis of inflorescence terete or inconspicuously 2-4-angled in cross-section; leaflets averaging smaller. |
............ ..........12 Stem and fruit finely pubescent with hairs < 0.5 mm long; leaves with (3-) 5-11 (-13) leaflets; petiole 0-5 mm long. |
............ ............ 13 Leaflets 5-7 (-9); upper leaflet surfaces glabrous; [of e. and s. GA, s. AL, s. MS, and FL] |
............ ............ 13 Leaflets (7-) 9-11 (-13); upper leaflet surfaces tawny-hirsute (use at least 10× magnification); [of c. peninsular FL] |
............ ..........12 Legume and stem coarse pubescent (villous) with hairs 1.0-1.5 mm long; leaves with (7-) 9-17 (-19) leaflets; petiole 2-15 mm long. |
............ ............ ..14 Inflorescence with 1-3 (-5) nodes; plants inconspicuously pubescent with gray hairs (the hairs appressed or spreading, short to fairly long); leaflets (3-) avg. 5-6 (-7) mm wide, mostly acute; [plants of the Coastal Plain of NC and SC] |
............ ............ ..14 Inflorescence with 2-20 nodes; plants conspicuously tawny long-pilose with rusty brown hairs; leaflets (6-) avg. 8 (-12) mm wide, mostly obtuse; [plants widespread in our area] |