a	Filaments all free from base upwards, occasionally shortly and ± equally connate at base only Anthers usually uniform in size and shape
	b	Filaments partly or almost wholly united to one another, either monadelphous in a closed tube, or diadelphous with the vexillary (adaxial) filament often free or partly so

	a	Calyx entire in bud Stamens 9-numerous Petals 0-9, not much differentiated	Tribe Swartzieae (103)
	b	Calyx lobes apparent or corolla markedly papilionoid Stamens (5-)10(-30) Petals generally 5, rarely 1 or 0

	a	Leaves digitately foliolate or simple, very rarely pinnate or reduced to scales	Tribe Podalyrieae (092)
	b	Leaves pinnately foliolate or of only 1 leaflet and then with distinct pulvinus at apex of petiolule	Tribe Sophoreae (099)

	a	Anthers distinctly dimorphic, alternately basifixed and shorter dorsifixed Leaves simple, 1-foliolate or digitately 3(-many)-foliolate, if compound, leaves generally pulvinate or with a raised leaf base, rarely distichous, never glandular-punctate Fruit never jointed
	b	Anthers ± uniform at least in size, some sometimes aborted, or if dimorphic (in Aeschynomeneae , Psoraleeae and a few Phaseoleae , by abortion in Teramnus ) then leaves pinnate or glandular punctate

	a	Upper 2 calyx lobes joined higher than lower ones, sometimes enlarged Lowermost (carinal) calyx lobe generally longer or narrower than upper ones Flowers mostly in heads or clusters Style glabrous Seeds arillate	Tribe Liparieae (062)
	b	Calyx lobes variously united, but not as below, or subequally lobed Lowermost lobe often much shorter and narrower than upper ones Flowers in terminal, rarely leaf-opposed, spikes, racemes, or heads, rarely axillary Seeds rarely arillate

	a	Filaments fused into a sheath open on upper side	Tribe Crotalarieae (031)
	b	Filaments fused into a closed tube	Tribe Genisteae (054)

	a	Leaves with pulvinus 0 (stipules often adnate to petiole base) or reduced, often with a stipular ridge forming an abaxial commissure, generally distichous or crowded Inflorescence axillary Herb or small softly woody shrub
	b	Leaves pulvinate, mostly free from stipules if present

	a	Leaflets ± toothed Nerves extending to ± toothed margin of leaflets Stipules adnate to petiole base	Tribe Trifolieae (114)
	b	Leaves not toothed (except some Psoraleeae ) Nerves looped within the margin (except some Galegeae )

	a	Leaves generally paripinnate, ending in a tendril or bristle, rarely imparipinnate Stipules free from petiole, generally foliaceous Fruit 2-valved Seeds lenticular to globose with ± linear hilum and no radicular lobes Herb	Tribe Vicieae * Vicia
	b	Leaves generally ending in a leaflet or a spine, less often in a bristle Stipules generally small and/or adnate to the petiole Seeds with a small round hilum generally below a radicular lobe

	a	Filaments of all or alternate stamens dilated apically Flowers 1 or 2 from axils, in heads or more often umbellate, sometimes subtended by a foliar bract Compound leaves generally with at least 3 terminal leaflets conjugate, lowermost pair sometimes stipule-like, sometimes with a glandular stipule
	b	Filaments not dilated upwards

	a	Fruit not jointed, generally dehiscent if long-exserted	Tribe Loteae Lotus
	b	Fruit jointed or elongated with thickened margins and hooked tip	Tribe Coronilleae * Ornithopus

	a	Ovules 2-many Fruit not both 1-seeded and glandular Racemes or fascicles simple with flower bracts only	Tribe Galegeae (050)
	b	Ovule 1 Fruit 1-seeded, glandular Inflorescences compound, with more than 1 series of bracts Foliage ± glandular-punctate or pustulate	Tribe Psoraleeae (095)

	a	Petals 5, all similar, ribbon-like or spathulate Fruit drupaceous or flat and curved, eglandular 1(-2)-seeded, indehiscent	Tribe Dalbergieae (046)
	b	Petals differentiated, papilionoid

	a	Stamens 9 Leaves paripinnate Flowers in pseudoracemes (pedicels several at a rachis node) or axillary fascicles Pods elastically dehiscent, with brown to brightly coloured seeds	Tribe Abreae Abrus
	b	Not as above

	a	Anthers apiculate or appendaged Petals usually reddish and caducous Biramous hairs present (often among others) Normally leafy	Tribe Indigofereae (059)
	b	Anthers not appendaged (if petals caducous)

	a	Anther thecae confluent above Perennial herb with astragaloid flowers, ± glandular foliage and minute peltate scales Fruit several-seeded, dehiscent or not, often muricate or bristly	Tribe Galegeae (050) (subtribe Glycyrrhizinae )
	b	Anther thecae separate, sometimes reduced to terminal pores (then plant woody)

	a	Fruit 1-seeded, often nutlet-like, small, generally glandular, with marcesent calyx Foliage glandular-pustulate or -punctate Never twining or large tree Inflorescence axillary Leaves (1-)3(-5)-foliolate	Tribe Psoraleeae (095)
	b	Fruit more pod-like, eglandular or woody Glands, if present, generally on surface or small internal punctae

	a	Fruit transversely jointed, sometimes of only 1 article, or less often opening down one suture (then tertiary venation of leaflets scalariform) Seeds with radicular lobe longer than cotyledonary lobe Lower petals generally withering and caducous after explosive pollen release Inflorescence generally compound with more than 1 series of bracts Leaves pinnately 3(-11)-foliolate, generally stipellate Stipules and bracts often striately nerved	Tribe Desmodieae (047)
	b	Fruit not jointed, or if so ( Aeschynomeneae ), seeds more symmetrical Lower petals more retractible or little interconnected and differentiated

	a	Style straight or curved away from standard Standard with a median gutter Leaves digitately 3-foliolate	Tribe Crotalarieae (086)
	b	Style curved towards standard

	a	Hypanthium 0 Intrastaminal disc generally present Vexillary filament often connate medially, but free, arched and thickened to form openings at base Flowers generally in pseudoracemes, sometimes in extensive panicles or clustered in axils Leaves generally imparipinnate, 3-many-foliolate, leaflets generally strictly opposite and stipellate, occasionally alternate, sometimes 1-foliolate or simple
	b	Hypanthium present, short to long Intrastaminal disc generally lacking Vexillary filament not flared at base of staminal tube Flowers almost always arising singly if inflorescence extended Leaves variously paripinnate to imparipinnate Leaflets alternate to opposite, with or without stipels, sometimes 1-3-foliolate

	a	Leaves (1-)3-foliolate, the laterals usually markedly asymmetrical and regularly stipellate, occasionally 5-9-foliolate Twining prostrate or erect herb, sometimes a shrub, liane or tree Inflorescences often in many axils	Tribe Phaseoleae (066)
	b	Leaves 1-many-foliolate, if 3-foliolate the lateral leaflets only slightly asymmetrical Tree, shrub or liane with hard wood, less often a subshrub or herb ( Tephrosia generally have closely parallel nerves extending to leaflet margins, but easily confused with Phaseoleae subtribe Ophrestiinae ) Inflorescences aggregated towards branch ends	Tribe Tephrosieae (104)

	a	Fruit jointed or geocarpic	Tribe Aeschynomeneae (025)
	b	Fruit not jointed, nor geocarpic

	a	Ovules 1-4 Fruit indehiscent, the seeds generally in separate seed chambers with hard endocarp Keel petals generally overlapping abaxially or, if margins adnate, flowers usually secund on the rachis, ± free from wings Stamens often shortly and/or irregularly joined	Tribe Dalbergieae (101)
	b	Ovules generally more numerous Fruit generally more pod-like even if flat and indehiscent

	a	Flowers in axillary racemes (occasionally with 1 or 2 branches if on leafless shoots) or rarely strictly leaf-opposed or in axillary clusters Keel petals abaxially joined (shortly in some bird-flowers) Stamens three-quarters joined except some bird-flowers Pods usually dehiscent, often septate internally	Tribe Robinieae (098)
	b	Flowers in terminal panicles, sometimes with supplementary axillary racemes, rarely all axillary Stamens very rarely joined so high and keel petals usually overlapping abaxially Fruit generally indehiscent	Tribe Sophoreae (099) and Tribe Tephrosieae (104)

Tribe Aeschynomeneae
	a	Conspicuous pellucid or pustular glands on leaves, calyx, etc. or, if obscure, flowers sessile in many paired bracts Pedicels without joints or bracteoles Fruit without strong longitudinal nerves on sides Articles several, quadrate, often ornamented with glands, crests or bristles	Subtribe Poiretiinae Zornia
	b	Pellucid or pustular glands lacking Pedicels almost always articulate and/or bracteolate

	a	Flowers sessile or subsessile in axils or on a common axis (bracts and 2 bracteoles then adjacent) Receptacle longer than broad, sometimes tubular Ovary sessile or nearly so Fruit with strong continuous longitudinal nerves on sides	Subtribe Stylosanthinae (030)
	b	Flowers pedicellate Receptacle broader than long or 0 Ovary generally stipitate

	a	Leaves almost always imparipinnate Fruit (unless globular or covered by bristles) with strong continuous nerves on sides Ovary septa formed late 3 lower calyx lobes discrete Stamens variously united but tending to split on vexillary side first, deflexed after anthesis	Subtribe Ormocarpinae Ormocarpum
	b	Leaves paripinnate, subimparipinnate or occasionally imparipinnate Articles reticulately veined Ovary septa generally formed by anthesis 3 lower calyx lobes discrete or largely joined in a lip Stamens tending to split on carinal side first, usually 10 or 5 + 5, usually lying above the fruit	Subtribe Aeschynomeninae (028)

Subtribe Aeschynomeninae
	a	Fruit exserted from the calyx	Aeschynomene
	b	Fruit enclosed within the calyx

	a	Stipules spurred at base Spur bilobed, with one side linear and longer than the other Leaflets opposite, 1-nerved	Smithia
	b	Stipules not spurred at base Leaflets alternate, with 2-7 basal nerves	Kotschya

Subtribe Stylosanthinae
	a	Leaflets 3 Fruit not maturing below the soil Petals arising in throat of calyx tube	Stylosanthes
	b	Leaflets 2 or 4 Fruit maturing below the soil, reticulate Petals and stamens arising at the apex of the calyx tube	* Arachis

Tribe Crotalarieae
004	a	Stipules 0 or inconspicuous Anthers often dimorphic
	b	Stipules conspicuous, free from each other and from leaf

	a	Leaves simple
	b	Leaves compound, rarely reduced to a single leaflet

	a	Calyx lobes subequal Leaves with 3-several parallel nerves Vexillum villous Fruit linear, compressed Shrub or shrublet, glabrous or sparsely villous	Aspalathus
	b	Calyx lobes unequal, the lower smaller and narrower than the upper Leaves usually with 1 main nerve and several lateral nerves

	a	Fruit lanceolate or linear Shrub or shrublet, ± glabrous and often glaucous Leaves from orbicular to linear, sessile or subsessile	Rafnia
	b	Fruit ovate, turgid Perennial herb, villous Stems prostrate from a woody rootstock Leaves lanceolate	Lotononis

	a	Calyx ± regularly 5-toothed
	b	Calyx not regularly 5-toothed

	a	Fruit linear Leaves petiolate, 3-foliolate or simple or reduced to scales	Lebeckia
	b	Fruit semi-ovate or lanceolate, obliquely acute or obliquely rhomboid Leaves in threes or fascicles, not petiolate	Aspalathus

	a	Calyx with 4 upper lobes ± united in pairs, the lowest free Anthers dimorphic
	b	Calyx 2-lipped

	a	Keel and style curved Mostly a shrublet	Lotononis
	b	Keel and style straight Mostly a herb	Pearsonia

	a	Calyx with trifid lower lip (lateral sinuses deeper than the lower ones) Fruit subtorulose, linear, flat Keel longer than the vexillum	Dichilus
	b	Calyx without trifid lower lip (lateral sinuses may be wider than the lower ones, but not deeper) Fruit winged along the upper or both sutures, flat and indehiscent, ovate or oblong	Wiborgia

	a	Stipules fused with the petiole and forming a cylindrical sheath around the stem	Polhillia
	b	Stipules not sheathing the stem

	a	Calyx equally 5-toothed or -lobed
	b	Calyx not equally 5-toothed or -lobed

	a	Anthers uniform, all bearing anthers Leaves digitately 3-foliolate or only the upper 1-foliolate	Rothia
	b	Anthers alternately longer (basifixed) and shorter (dorsifixed)

	a	Stipules small Flowers in terminal, often unilateral racemes Fruit linear	Lebeckia
	b	Stipules conspicuous, sometimes foliaceous and toothed Peduncles leaf-opposed

	a	Beak of keel not spirally coiled	Crotalaria
	b	Beak of keel and genitalia spirally coiled	Bolusia

	a	Calyx with the 4 upper teeth ± united in pairs, the lower one free	Lotononis
	b	Calyx bilabiate Anthers alternately dissimilar Fruit linear, compressed, often tortulose	Melolobium

Tribe Dalbergieae
007	a	Wing petals not much broader than keel, not crimped, white or cream-coloured Anthers basifixed, with apical dehiscence Some branches modified as spines or climbing aids	Dalbergia
	b	Wing petals broadly expanded, ± crimped, bright yellow or orange-yellow Anthers dorsifixed with longitudinal dehiscence Branches not modified as spines or climbing aids	Pterocarpus

Tribe Desmodieae
	a	Plants with characteristic uncinate hairs Tertiary venation ± scalariform Stipels present Flowers chasmogamous, with an explosively dehiscent pollination mechanism Vexillum with hardly or slightly inflexed auricles Ovary (1)-many-ovulate	Subtribe Desmodiinae (048)
	b	Plants without uncinate hairs Tertiary venation reticulate Stipels 0 Flowers chasmogamous, not explosively dehiscent, often mixed with cleistogamous flowers Vexillum with inflexed auricles more persistent than most Desmodiinae Ovary 1-ovulate	Subtribe Lespedezinae * Lespedeza

Subtribe Desmodiinae
	a	Calyx glumaceous, striate, deeply divided, persistent and often partially enclosing the fruit Fruit held erect, usually consisting of a number of 'stacked' terete or subterete articles Leaves 1-foliolate	Alysicarpus
	b	Calyx often membranous, not glumaceous or striate, shallowly divided, usually inconspicuous in fruit Fruit mostly held away from erect Leaves (1)3(5)-foliolate

	a	Stipules stramineous, striate, erect or spreading but never sharply recurved and velutinous Fruit distinctly jointed, breaking up into individual articles	Desmodium
	b	Stipules mostly sharply recurved, dark brown adaxially, silver-velutinous abaxially Fruit splitting into 2 valves	Pseudarthria

Tribe Galegeae
007	a	Style bearded (sometimes just a tuft of hairs below stigma on one side) Claws of keel largely joined Pods generally inflated (sometimes bladdery), if compressed, generally membranous, with sutures intruding or not, but without a longitudinal septum	Subtribe Coluteinae (053)
	b	Style glabrous, but stigma sometimes penicillate (short, uniform hairs all round) Pods not as below

	a	Pod nerves oblique, closely parallel, raised at maturity, confluent towards placental margin Vexillary filament connate with others Keel blades not auriculate Leaflet nerves extending to margin	Subtribe Glycyrrhizinae * Glycyrrhiza
	b	Pod nerves transverse, confluent over middle part of valves, fine or inconspicuous Vexillary filament generally free Keel blades generally auriculate Leaflet nerves usually looped within the margin or inconspicuous	Subtribe Astragalinae (052)

Subtribe Astragalinae
	a	Perennial herb Unarmed Leaflets many	Astragalus
	b	Rigid much-branched shrub Armed with axillary spines Leaves 1-foliolate	* Alhagi

Subtribe Coluteinae
	a	Style bearded with hairs on the upper (adaxial) face Fruit membranous-bladdery, inflated	Sutherlandia
	b	Style bearded around the stigma Fruit membranous, slightly inflated or compressed	Lessertia

Tribe Genisteae
	a	Leaves 5-17-foliolate, palmate, or leaves simple and large (most over 30 × 10 mm) Keel strongly beaked Wings generally adnate at apex	Subtribe Lupininae * Lupinus
	b	Leaves 1-3-foliolate or leaves simple and smaller Keel obtuse, rarely slightly beaked Wings free at apex	Subtribe Genistinae (055)

Subtribe Genistinae
	a	Plant spiny	* Ulex
	b	Plant not spiny

	a	Leaves simple or 1-foliolate, sometimes very small
	b	Leaves 3-foliolate

	a	Calyx split to the base adaxially	* Spartium
	b	Calyx not split to the base	* Cytisus

	a	Calyx nearly as long as the keel Plant often herbaceous	Argyrolobium
	b	Calyx with short teeth and not as long as keel Plant always a shrub	* Cytisus

Tribe Indigofereae
	a	Pods 3-5 mm wide, erect, longitudinally ridged Leaflets often dentate Vexillary (adaxial) stamen completely united with others into a closed tube Corolla darkly veined when dry	Cyamopsis
	b	Pods less than 3 mm wide, erect, patent or reflexed, not as above Leaflets never dentate Vexillary (adaxial) stamen free from others or united with them only at base Corolla not darkly veined when dry

	a	Keel (and usually dorsal surface of standard) hairy Upper margin of the keel with a fringe of hairs Standard mostly broad at the base, tapering suddenly to a short claw Keel with lateral spurs, not prolonged-rostrate at the apex	Indigofera
	b	Keel (and usually dorsal surface of standard) glabrous Standard narrow at the base, tapering gradually to the claw Keel with lateral pockets (spurs 0), often prolonged-rostrate at the apex

	a	Style short, thick Stigma discoid Fruiting pedicels mostly over 2 mm long, ± patent Pods often held at ± a right angle Bracts persistentI Inflorescence lax in bud	Microcharis
	b	Style narrow, tapering to an oblique or capitate stigma Fruiting pedicels rarely over 2 mm long, reflexed (as are pods) Bracts caducous Inflorescence dense in bud	Indigastrum

Tribe Liparieae
	a	Leaves digitately 3-foliolate Stamens in a closed tube Bracteoles present	Hypocalyptus
	b	Leaves simple Stamens in an open sheath Bracteoles 0

	a	Keel petals not laterally appendaged Flowers mostly yellow Anthers ± equal in length Flowers in terminal heads or clusters
	b	Keel petals gibbous on one side or with spur Anthers dimorphic Flowers small

	a	Calyx lobes unequal, lowest petaloid and large Keel narrow, slightly falcate, with a forwardly directed beak Leaves completely sessile	Liparia
	b	Calyx lobes subequal, not petaloid Keel obtuse or with an upwardly directed beak Leaves with a short petiole	Xiphotheca

	a	Vexillary stamen free, joined part of the stamen usually longer than the free part	Amphithalea
	b	Vexillary stamen joined with others, the free part usually longer than the joined part	Coelidium

Tribe Phaseoleae
	a	Leaflets and calyx generally with yellowish gland-dots Bracteoles 0 Style slender below, hardened and a little thickened distally, glabrous Inflorescence not nodose	Subtribe Cajaninae (072)
	b	Leaflets and calyx eglandular

	a	Style with distinctive expansion, flattening, coiling or specialised hairs, or if rarely unbearded as well as terete then petals elaborate with appendages on standard and keel petals adaxially joined Hila usually covered with spongy tissue	Subtribe Phaseolinae (082)
	b	Style generally terete and unbearded (sometimes a few hairs below the stigma), occasionally coiled in Erythrininae , sometimes bearded or flattened in Clitoriinae but then petals less complex Hila rarely covered with tissue

	a	Flowers generally resupinate Calyx naked inside Style narrow or expanded to naked, penicillate or bearded in distal part Petals often hairy Leaflets 3, 1 or 5-9, with minute hooked hairs	Subtribe Clitoriinae * Clitoria
	b	Flowers not resupinate or, if so, then differing in other respects

	a	Standard silky hairy outside, rather small, without appendages inside Seeds smooth, with a prominent aril Inflorescence not or slightly nodose	Subtribe Ophrestiinae Ophrestia
	b	Standard glabrous, or if hairy then inflorescence generally nodose or flowers much modified

	a	Flowers mostly adapted to pollination by birds or bats, the petals generally unequal in length, the fertile parts loosely housed or exserted, sometimes with small bee-type flowers but then either style coiled or flowers in extensive panicles and pod samaroid	Subtribe Erythrininae (078)
	b	Flowers mostly adapted to pollination by bees or, if bird-flowers, then petals subequal in length

	a	Inflorescence generally nodose, occasionally paniculate or axillary and few-flowered Seeds diverse, with short to long hilum	Subtribe Diocleinae (077)
	b	Inflorescence not or scarcely nodose (sometimes branched in Pueraria) Seeds smooth, granular or rough, with short hilum	Subtribe Glycininae (079)

Subtribe Cajaninae
	a	Ovules 4 or more Arils often prominent
	b	Ovules 2, rarely 3 Arils usually inconspicuous

	a	Fruit ± compressed, acuminate, marked between the seeds with oblique, depressed lines	* Cajanus
	b	Fruit turgid, without depressions	Bolusafra

	a	Calyx lobes enlarged and membranous or scarious after flowering, the lowest largest Sruit falcate-ovate, enclosed by the calyx	Rhynchosia
	b	Calyx lobes not enlarged after flowering

	a	Fruit turgid Leaves digitately 3-foliolate or 1-foliolate Flowers spicate-racemose or paniculate	Flemingia
	b	Fruit compressed Flowers usually several in racemes

	a	Stems usually twining or trailing Funicle of the seed attached in the middle of the hilum	Rhynchosia
	b	Stems usually stiff and erect Funicle of the seed attached at the end of the linear hilum	Eriosema

Subtribe Diocleinae
	a	Calyx not strongly 2-lipped Upper calyx lobes completely united (calyx appears 4-lobed) Fruit narrowly linear, straight or curved, many-seeded Usually a herb or subshrub, prostrate, climbing or erect	Galactia
	b	Calyx 2-lipped, the upper lip large, entire or 2-lobed, the lower lip small Fruit large, linear-oblong to oblong, usually with longitudinal ribs close to upper margin Usually a woody climber or liane	Canavalia

Subtribe Erythrinae
	a	Carina shorter than vexillum Anthers uniform Fruit glabrescent, often moniliform Stipels glandular or, rarely, coriaceous Usually a tree or shrub	Erythrina
	b	Carina exceeding vexillum Anthers alternately dorsifixed and basifixed, the shorter often bearded Fruit with indumentum of irritant hairs Stipels nonglandular Woody liane or climber	Mucuna

Subtribe Glycininae
	a	Stamens alternately aborted Persistent style of the fruit turned up into a hook	Teramnus
	b	Stamens all fertile Pod without a hook

	a	Claws of the wings and keel longer than the blade Seeds with a smooth surface without a scarious flap Calyx thin and glabrous on the inside, translucent Upper calyx lobes united	Dumasia
	b	Claw of the wings and keel shorter than the blade Seeds usually with a rough surface Hilum often with a scarious flap Calyx lobes often distinct

	a	Vexillary stamen usually united with the others Flowers small, white Inflorescence lax, 20-150-flowered Upper calyx teeth united	Neonotonia
	b	Vexillary stamen free below but connate above with the rest Flowers usually purple Inflorescence elongate, with the groups of flowers arising from very conspicuous nodes Upper calyx teeth distinct	* Pueraria

Subtribe Phaseolinae
	a	Stigma lateral, oblique Style filiform, coiled with 3-5 or more revolutions	Vigna
	b	Stigma terminal

	a	Stigma bilabiate Stamens monadelphous	Otoptera
	b	Stigma not bilabiate Adaxial stamen usually free

	a	Pollen grains tuberculate or spinulose, zonitriporate Style tenuous throughout or slightly widened above Standard with narrow, elongated appendages Wings very narrow, flowers mostly yellow or orange Ovary 3-9-ovulate	Macrotyloma
	b	Pollen grains not spinulose or, if somewhat granulate, then other characters not as above Flowers often shades of red, violet, purple or blue

	a	Style not narrowed into a thin waist
	b	Style of two parts, an upper, incrassated part and a basal, tenuous part

	a	Style conspicuously flattened throughout and blade-like, slightly less than at right angles to the ovary Staminal appendages 2
	b	Style not conspicuously flattened throughout

	a	Style 2-winged, glabrous Stigma ± penicillate Keel somewhat rounded	Alistilus
	b	Style not winged, with a line of hairs along inner margin Stigma not penicillate Keel sharply angled in middle Pods usually verrucose along margins	Lablab

	a	Style with apex flattened into a tenuous, spatulate portion, stigmatose along the terminal edge	Sphenostylis
	b	Style not flattened (except in Dolichos junodii )

	a	Style strongly curved near base and apex in same direction, the middle part gently curved in opposite direction	Dipogon
	b	Style not so complicatedly curved

	a	Style with a distinct, bulging, eccentric callus at its junction with the ovary	Neorautanenia
	b	Style without prominent callus at junction with ovary Stigma terminal, usually ringed with hairs	Dolichos

	a	Keel not so strongly curved Stigma terminal, scarcely penicillate Flowers on a nodulate rachis	Dolichos
	b	Keel incurved through 180-360° Stigma terminal, penicillate, with simple or branched hairs Flowers in axillary fascicles, usually precocious	Decorsea

Tribe Podalyrieae
	a	Leaflets many Flowers in extended racemes	Virgilia
	b	Leaflets 1-3 Flowers 1 or 2(-4)

	a	Leaves digitately or palmately 3-foliolate Calyx lobes longer than tube, imbricate Flowers solitary, axillary Wings with a transverse fold Fruit oblong, compressed	Cyclopia
	b	Leaves simple or unifoliolate Calyx lobes longer than tube Flowers 1-2(3-4)-nate on axillary peduncles Wings with curved, linear claw Fruit ovoid or oblong

	a	Flowers purple, pink or white Style base glabrous	Podalyria
	b	Flowers yellow Style base pubescent	Stirtonanthus

Tribe Psoraleeae
007	a	Flower pedicel subtended by a distinctive, lobed cupulum
	b	Flower pedicel never subtended by a distinctive, lobed cupulum

	a	Calyx lobes covered with black stubby hairs on inner surface, tube prominently ribbed and encrusted with glands Internal secretory cavities present in leaflets	Psoralea
	b	Calyx lobes not covered with black stubby hairs on inner surface, tube weakly ribbed and sparsely glandular Internal secretory cavities 0 in leaflets	Hallia

	a	Fruit ovoid, with conspicuous black glandular warts when mature	Cullen
	b	Fruit never with black glandular warts	Otholobium

Tribe Robinieae
	a	Hard-wooded tree and shrub Stipules spinescent, usually paired Seeds not in distinct compartments	* Robinia
	b	Upright herb, rarely tall and subshrubby Stipules not spinescent Fruit septate	Sesbania

Tribe Sophoreae
001	a	Leaves reduced to 1 leaflet (unifoliolate) Fruit linear or falcate	Baphia
	b	Leaves with 2 or more leaflets

	a	Fruit or pod moniliform, stalked Flowers white, yellow or rarely blue-violet, in racemes or leafy panicles	Sophora
	b	Fruit not moniliform

	a	Fruit broadly linear, ± winged or margined Flowers yellow	Calpurnia
	b	Fruit not winged Flowers mainly blue and pink

	a	Vexillum much broader than other petals Racemes simple, pendulous Flowers blue Fruit linear to oblong, compressed	Bolusanthus
	b	Vexillum only slightly broader than other petals Racemes paniculate Fruit stalked, drupe-like	Xanthocercis

Tribe Swartzieae
	a	Petals 0 Leaflets (7)11-28 per leaf, with many pellucid glands Stamen filaments confluent basally with the hypanthium (calyx tube)	Cordyla
	b	Petals 1, large Leaflets (3)5-11 per leaf, without pellucid glands Stamen filaments free or nearly so Disc and hypanthium 0 (filaments arising around base of gynophore or ovary)	Swartzia

Tribe Tephrosieae
020	a	Herb or undershrub, never scandent
	b	Robust shrub or tree, sometimes scandent

	a	Legume contorted, membranous, subindehiscent Leaves digitately foliolate Stipules small or 0 Flowers 2 or 3 in leaf axils	Ptycholobium
	b	Legume coriaceous or rigid

	a	Legume 2-few-seeded Leaves usually pinnately trifoliolate	Tephrosia
	b	Legume 1-seeded Leaves unifoliolate Leaflet obcordate	Requienia

	a	Leaves imparipinnate, stipulate Leaflets opposite
	b	Leaves imparipinnate, stipulate Leaflets alternate or subopposite

	a	Leaflets stipellate	Millettia
	b	Leaflets not stipellate

	a	Fruit winged along the upper or both sutures Calyx truncate or with very short or obsolete teeth	Derris
	b	Fruit not winged, flat and compressed, membranous or coriaceous

	a	Flowers white, pink or purple, in dense panicles, with most flowers reaching maturity	Lonchocarpus
	b	Flowers orange, in terminal pseudoracemes, with only one flower per node reaching maturity	Tephrosia

	a	Fruit woody, soon dehiscent	Craibia
	b	Fruit coriaceous or membranous, never woody, indehiscent or tardily dehiscent

	a	Wing petals free from keel Keel petals free from each other Flowers in terminal panicles Fruit margined with a wing on each side	Xeroderris
	b	Wing petals adnate to keel

	a	Leaves sometimes only pinnately 3-foliolate or rarely 1-foliolate Fruit broadly ovate to linear-oblong	Lonchocarpus
	b	Leaves with 6 pairs of leaflets, silvery pubescent Fruit linear	Mundulea

Tribe Trifolieae
	a	Petals becoming dry and persistent after flowering Filaments mostly dilated upwards Fruit indehiscent	Trifolium
	b	Petals falling after flowering Filaments not dilated

	a	Flowers in slender racemes Ovules few Fruit indehiscent or tardily 2-valved	* Melilotus
	b	Flowers in heads or short racemes or rarely solitary

	a	Fruit straight or curved, mostly linear	Trigonella
	b	Fruit mostly spirally coiled, scarcely dehiscent, mostly prickly	* Medicago