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1 Leaflets 1; [e. TX southwestwards] |
1 Leaflets 3-9; [collectively widespread in our region]. |
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....3 Leaflets 5-9, leaflets in a conventionally pinnate arrangement; flowers white, 3-11 in a terminal inflorescence; [Coastal Plain of FL, GA, and SC] |
....3 Leaflets mostly 5 (3-7 per leaf, most on a plant 5), the 4 non-terminal leaflets at a single node at the summit of the petiole; flowers pink, solitary and axillary; [TX] |
..2 Leaflets 3; flowers white, pink, red, or purple. |
......4 Stems erect (not prostrate, trailing, or twining), with 4-6 (-8) leaves, usually alternately bent at nodes; inflorescence subsessile, 1-6-flowered |
......4 Stems prostrate, trailing, or twining, with numerous leaves (except in depauperate plants), not bent at nodes; inflorescence pedunculate, 1-flowered if sessile or subsessile. |
........5 Stems climbing or sprawling, twining. |
..........6 Corollas 11-14 (-15) mm; stems loosely strigose with short, loosely appressed, retrorse hairs, strongly lignescent |
..........6 Corollas 7-11 mm; stems strigose to hirsute or hirsute-pilose, herbaceous to weakly lignescent or ( G. striata) strongly lignescent. |
............ 7 Banner striped with white lines; [c. and s. FL peninsula, coastal and near-coastal] |
............ 7 Banner not striped; [collectively widespread]. |
............ ..8 Fruits falcate; flowers 1-5, solitary and pedicellate or 2-5 on an inflorescence axis 1-4 (-40) mm long; [TX] |
............ ..8 Fruits straight; flowers 1-8 (-16), solitary and pedicellate or 2-8 (-16) on an inflorescence axis 10-150(-280) mm long; [collectively widespread]. |
............ ....9 Stems strigose with antrorse hairs; leaflets linear-oblong to narrowly oblong or narrowly elliptic, 2-4 (-6) mm wide; [s. FL only] |
............ ....9 Stems strigose to hirsute or hirsute-villous with spreading-deflexed to retrorse hairs; leaflets oblong to elliptic or lanceolate, 5-21 (-25) mm wide; [more widely distributed]. |
............ ......10 Leaflets narrowly oblong to oblong-lanceolate, 6-14 mm wide; fruits 35-65 mm long, seeds 12-15 per fruit; [TX] |
............ ......10 Leaflets various (see below), 5-21 (-25) mm wide; fruits 20-52 mm long; seeds 5-11 per fruit; [collectively widespread]. |
............ ........11 Leaflets mostly elliptic to broadly elliptic, (5-) 10-21 (-25) mm wide, usually widest at the midpoint; stems moderately to densely hirsute to hirsute-villous with spreading-deflexed hairs; corollas 7-10 mm; leaflets thick in texture, not glaucous below |
............ ........11 Leaflets mostly ovate to lanceolate, 5-15 (-17) mm wide, widest below the midpoint; stems moderately to sparsely strigose with tightly to loosely appressed, retrorse hairs, sometimes glabrate; corollas 9-14 mm; leaflets thin in texture, usually glaucous below |
........5 Stems procumbent at least proximally and variously twining, weakly twining, or not twining towards the tip. |
............ ..........12 Stems gray retrorse-strigose; leaflets roundish, 1-1.3× as long as wide; stems 'rooting' at nodes, producing rhizomes; inflorescences of 2 types: 1) aerial inflorescences with chasmogamous flowers, and 2) single, subterranean, cleistogamous flowers that develop into 1-seeded legumes; [TX and southwards] |
............ ..........12 Stems variously hairy to glabrous, but not gray retrorse-strigose; leaflets elongate, > 1.5× as long as wide; stems not rooting at nodes; inflorescences all aerial with chasmogamous flowers; [LA and eastwards] |
............ ............ 13 Calyx lobes brown to reddish brown on inner surface when dry; corollas distinctly dark reddish when dry, persisting after withering, sometimes still present when fruit is mature |
............ ............ 13 Calyx lobes greenish-yellow to tan on inner surface when dry; corollas light whitish to blue, pinkish, or purplish when dry, not persisting after anthesis. |
............ ............ ..14 Leaflets subcoriaceous to coriaceous, venation raised on both surfaces. |
............ ............ ....15 Leaflets mostly linear-oblong or narrowly oblong, 2-8 (-11) mm wide; [c. and s. peninsular FL only] |
............ ............ ....15 Leaflets elliptic, oblanceolate-elliptic, oblong-elliptic, elliptic-lanceolate, or broadly lanceolate, (4-) 7-25 (-32) mm wide; [mainly Coastal Plain, s. NJ south to s. FL, west to s. MS] |
............ ............ ......16 Several to most internodes (especially those toward the base) longer than the largest leaflet of adjacent nodes, hairs on the stem 0.1-0.8 mm long; leaflets (4-) 10-25 (-32) mm wide; flowers (3-) 5-15 (-25), rarely 1-2 |
............ ............ ......16 Internodes only a little longer to usually shorter than the largest leaflet of adjacent nodes, hairs on stems 0.05-0.25 mm long; leaflets (4-) 7-10 (-18) mm wide; flowers solitary and axillary or 2-4 |
............ ............ ..14 Leaflets herbaceous, venation not raised. |
............ ............ ........17 Leaflets (14-) 20-55 × (10-) 15-35 mm; flowers 5-12 (-25) |
............ ............ ........17 Leaflets 8-30 × 5-20 mm; flowers solitary and axillary or 2-6. |
............ ............ ..........18 Inflorescence axis 10-20 mm; calyces 3-4 mm; corollas 6-7 mm; [Panhandle FL and adjacent s. AL] |
............ ............ ..........18 Inflorescence axis (5-) 20-60 (-90) mm; calyces 6-7 mm; corollas 12-15 mm; [s. FL] |
1 Tendrils present on plant; leaves modified into tendrils (leaflike structures present clearly interpretable as stipules); [tribe Fabeae]. |
..2 Legume 4-7 mm wide; corolla 10-13 mm long |
..2 Legume 12-20 mm wide; corolla 18-25 mm long |
1 Tendrils absent; leaves or stipules present on plant and interpretable as leaves with 1 leaflet. |
....3 Leaflet blades roundish, 0.6-1.5× as long as wide. |
......4 Leaves with a well-developed petiole, > 0.5 cm long. |
........5 Leaflet margins dentate; corollas white to pink; [tribe Psoraleeae] |
........5 Leaflet margins entire; corollas yellow; [tribe Phaseoleae] |
......4 Leaves sessile, subsessile, or perfoliate. |
..........6 Corolla bright or creamy yellow; stamens separate; leaves all 1-foliolate; leaflet blades perfoliate or sessile; [tribe Thermopsideae] |
..........6 Corolla violet to blue (drying pale); stamens diadelphous; leaves 1-foliolate and with some leaves 3-foliolate or 2-foliolate; leaflet blades cuneate, subsessile; [tribe Psoraleeae] |
....3 Leaflet blades elongate, 1.5-15× as long as wide. |
............ 7 Leaves basally disposed. |
............ ..8 Leaflet blades elliptic, widest near the midpoint of the blade; flowers pink, rose, or purplish; legume straight; [native of the Coastal Plain, se. NC south to s. FL, west to e. LA]; [tribe Genisteae] |
............ ..8 Leaflet blades oblanceolate, widest well past the midpoint of the blade; flowers yellow; legume coiled; [rare waif]; [tribe Loteae] |
............ 7 Leaves all or primarily cauline. |
............ ....9 Leaves long-petioled, the petiole > 2 cm long. |
............ ......10 Petiole winged its entire length; leaflet blade 2-4× as long as wide, sagittate at the base; foliage not glandular; [tribe Phaseoleae] |
............ ......10 Petiole not winged; leaflet blade 8-15× as long as wide, cuneate at the base; foliage glandular-punctate; [tribe Psoraleeae] |
............ ....9 Leaves sessile, subsessile, or short-petiolate, the petiole < 1.5 cm long. |
............ ........11 Stamens monadelphous; corolla yellow, 8-30 mm long; [tribe Crotalarieae] |
............ ........11 Stamens diadelphous; corolla purple, lavender, or cream, 5-15 mm long. |
............ ..........12 Corolla 11-15 mm long, purple; [se. and s. TX]; [tribe Diocleae] |
............ ..........12 Corolla 5-7 mm long, lavender or cream; [widespread in our area] |
............ ............ 13 Flowers solitary in leaf axils; [tribe Loteae] |
............ ............ 13 Flowers in racemose inflorescences; [tribe Desmodieae] |