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Family leguminosae (fabaceae) sub family papilionoideae (legume family)

The Fabaceae or Leguminosae, commonly known as the legume, pea, or bean family, are a large and economically important family of flowering plants.

DISTRIBUTION: Cosmopolitan in distribution, except in artic region. This subfamily consists of 425 genera and 12150 species.

HABITAT: Terrestrial, wild or cultivated for pulses and oil.

HABIT: Annual or perennial herbs, climbers (Lathyrus), shrubs(Sesbania) ,or trees(Dalbergia)

ROOT: Tap root with nodulated, root nodules consisting of symbiotically associated nitrogen fixing bacteria Rhizobium 

STEM: Aerial, erect, climbers supported by tendrils (Pisum), branched, cylindrical or quadrangular (Vicia faba) , herbaceous or woody (Dalbergia) , solid ,fistular (Vicia faba) 
, glabrous or pubescent.

LEAF: Cauline and ramal , alternate or opposite or whorl , stipulate (foliaceous stipule ), petiolate , pulvinous petiole (Glycine max) , simple ,pinnately or palmately compound lead, entire acute or mucronate, glabrous, green or glaucous, unicostate, reticulate venation.

INFLORESCENCE: Racemose, receme or panicle or spike or solitary 

FLOWER: bracteate or ebracteate, ebractiolate, pedicellate, complete, zygomorphic, hermaphrodite, pentamerous, papilionaceous, hypogynous or perigynous, white or pink in colour 
CALYX: sepals – 5, gamosepalous, toothed or bilabiate, sepaloid, campanulate, valvet or imbricate aestivation. 
COROLLAPetals – 5, polypetalous, petaloid, papilionaceous, one petal large, two medium and two small, fused called keels, vexillary aestivation. 
ANDROECIUM: Stamens – 10, diadelphous or monoadelphous, rarely polyandrous. Anther: bilobed or dithecous, basifixed or dorsifixed, intorse. 
GYNOECIUMCarpel – 1, monocarpellary. Ovary: superior, unilocular, marginal placentation. Style – curved. Stigma – capitate or hairy. 
FRUITLegume or pod SEEDS: Dicotledonous and non endospermic. 
Floral formula :________Floral diagram : ________

Systemic Position :           Class : Dicotledonae                Sub Class : Polypetalae                     Series : Calciflorae                          Order : Rosales                                Family : Leguminosae                                     Sub Family : Papilionaceae Diagnostic characters Leaves : stipulate, alternate or opposite, simple or compound. Inflorescence: racemose, Flower : pentamerous, zygomorphic, hermaphrodite, papilionaceous, hypogynous or perigynous. Sepals : 5, gamosepalous, Petals :5, polypetalous, papilionaceous, Stamens :10, diadelphous, Carpel : 1, monocarpellary, Fruit: legume or pod

Example of family leguminoseae : Brittanica

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