PlantsFlowering PlantsLegumesPapilionoidae — Subfamily Papilionoidae
Leaves alternate, once-pinnately compound or palmately compound. Flowers bilaterally symmetrical. 3 separate petals and 2 fused petals.

Habit
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Shrubby Jointvetch —  Aeschynomene evenia [1]
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Camelthorn —  Alhagi maurorum [1]
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White Moneywort —  Alysicarpus vaginalis [1]
False Indigo
False Indigo — Genus Amorpha
Leaves odd-pinnately compound with many leaflets.
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Southern Hog-peanut —  Amphicarpaea bracteata [1,2]
Vine. Leaves pinnately compound with 3 leaflets. Margins entire. Flowers white to purplish. Flowering May-Sep.
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Groundnut —  Apios americana [1,2]
Vine. Leaves pinnately compound with 5-7 leaflets.
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Peanut —  Arachis hypogaea [1,2]
Leaves pinnately compound with usually 4 leaflets. Flowers yellow.
Turkey-pea
Astragalus — Genus Astragalus
Leaves odd-pinnately compound, entire. Flowers whitish or yellowish or pink to purple. 10 stamens.
Blue Wild Indigo
Wild Indigo — Genus Baptisia
Shrub. Leaves alternate, palmately compound with 3 leaflets. Flowers yellow or blue-violet.
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Littleleaf Greentwig —  Brongniartia minutifolia [1]
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Jackbean — Genus Canavalia
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Spurred Butterfly Pea —  Centrosema virginianum [1,2]
Vine. Leaves pinnately compound with 3 leaflets. Flowers lavender to violet-blue.
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Pigeonwings — Genus Clitoria
Flowers bluish.
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Cologania — Genus Cologania
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Crown-vetch —  Coronilla varia [2]
Leaves odd-pinnately compound with 9-25 leaflets. Leaf margins entire. Flowers pink. 5-15(-20) flowers per umbel. Flowering May-Jul.
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Texas Babybonnets —  Coursetia axillaris [1]
Shrub.
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Rattlebox — Genus Crotalaria
Herb or shrubby herb. Flowers yellow with 10 stamens.
Black Prairie Clover
Dalea — Genus Dalea
Leaves odd-pinnately compound with 3-9 leaflets. Flowers purple, pink, white, or yellow.
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Tick-clover — Genus Desmodium
Leaves compound with 3 leaflets, entire. Flowers white or pink to purple.
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Boykin's Clusterpea —  Dioclea multiflora [1]
Vine.
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Redcardinal —  Erythrina herbacea [1,2]
Tree or shrub.
Texas Kidneywood
Kidneywood — Genus Eysenhardtia
Tree or shrub.
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Milkpea — Genus Galactia
Leaves pinnately compound with 3 (or 5) leaflets. Flowers pink, rosey, or lavender.
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Brushpea —  Genistidium dumosum [1]
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American Licorice —  Glycyrrhiza lepidota [1]
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Utah Sweetvetch —  Hedysarum boreale [1]
Coastal Indigo
Indigo — Genus Indigofera
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Kummerowia — Genus Kummerowia
Leaves palmately compound with 3 leaflets.
Rough-pea
Pea — Genus Lathyrus
Leaves pinnately compound, each with a tendril instead of a terminal leaflet.
Chinese Bush-clover
Bush-clover — Genus Lespedeza
Leaves pinnately compound with 3 leaflets. Margins entire. Flowers purple, or white to cream.
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Trefoil — Genus Lotus
Texas Bluebonnet
Lupine — Genus Lupinus
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Bushbean — Genus Macroptilium
Black Medick
Bur-clover, Medick — Genus Medicago
3 leaflets. Flowers yellow or purple.
White Sweet-clover
Sweet-clovers — Genus Melilotus
Leaves pinnately compound with 3 leaflets. Flowers yellow or white.
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Broadsepal Yellowhood —  Nissolia platycalyx [1]
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Leather-root — Genus Orbexilum
Leaves pinnately compound with 3 leaflets.
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Twining Bluehood —  Oxyrhynchus volubilis [1]
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Locoweed — Genus Oxytropis
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Pediomelum — Genus Pediomelum
Leaves pinnately compound with 3-7 leaflets. Leaf margins entire. Flowers red/pink/purple/blue. 10 stamens.
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Rush Peteria —  Peteria scoparia [1]
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Bean — Genus Phaseolus
Vine/herb.
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Scurfpea — Genus Psoralidium
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Broom Dalea —  Psorothamnus scoparius [1]
Shrub or shrubby plant.
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Kudzu —  Pueraria montana [1,2]
Vine. Leaves pinnately compound with 3 leaflets, very long petioles. Margins entire. Flowers purple. Flowering summer-fall.
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Locust — Genus Robinia
Tree or shrub.
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Snoutbean — Genus Rhynchosia
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Crownvetch —  Securigera varia [1]
Vine/herb.
Coffee-bean
Sesbania — Genus Sesbania
Leaves even-pinnately compound. Margins entire. Flowers yellow or orange-yellow.
Texas Mountain Laurel
Necklacepod — Genus Sophora
Tree, shrub, or herb. Leaves alternate, compound.
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Alkali Swainsonpea —  Sphaerophysa salsula [1]
Shrubby herb.
Amberique-bean
Fuzzybean — Genus Strophostyles
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Pencilflower — Genus Stylosanthes
Eve's-necklace
Eve's Necklace — Genus Styphnolobium
Tree. Leaves alternate, pinnately compound. Leaflets 12-18, oval, 1". Flowers white to pink. Flowering Apr-May.
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Hoarypea — Genus Tephrosia
Leaves odd-pinnately compound with many leaflets.
White Clover
Clover — Genus Trifolium
Palmately compound with 3 leaflets. Flowers white or red.
Common Vetch
Vetch — Genus Vicia
Leaves pinnately compound, each with a tendril instead of a terminal leaflet. 4-18 leaflets. Flowers white/pink/purple/violet.
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Cowpea — Genus Vigna
Vine/herb.
American Wisteria
Wisteria — Genus Wisteria
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Zornia — Genus Zornia
Evidence that species is found in Texas:
  1. USDA Plants Database, advanced search for Texas plants from the United States Department of Agriculture.
  2. Shinners & Mahler's Illustrated Flora of North Central Texas, George M. Diggs, Jr., Barney L. Lipscomb, and Robert J. O'Kennon, Botanical Research Institute of Texas (BRIT), Fort Worth, Texas, 1999. An invaluable resource for identifying Texas plants. Excellent glossary.