CLASS : 11
Family : Liguminosae
Sub family: Papilionaceae
Papilionaceae is also known as pea family. There are about 600 genera and 1300 species. Widely distributed,abundant in trophical to temperate region. Some economically important members are
- Pisum sativum, PEA - important pulse (DAL)
- Phaseolus vulgaris, BODI - important pulse (DAL)
- Vicia faba, BAKULLA - important pulse (DAL)
- Gycine max, BHATMAS - - important pulse (DAL)
- Arachis hypogea, BADAM - Important for oil and nut
- Cicer arientum, GRAM - - important pulse (DAL)
- Cajanus cajan, ARHAR - important pulse (DAL)
- Delbergia sisso, SISSOO - Important timber
- Lens culinaris, MASURO - important pulse (DAL)
Root: Tap root and branched, root nodules are present which is important for nitrogen fixation.
Stem: Erect or prostrate or climbing, herbaceous or woody (Dalbergia sissoo), branched, angular or cylindrical, solid or fistular, glabrous, green.
Leaf: Stipulate, cauline and ramal, simple or compound, pinnately compound, modified into tendrils, alternate or opposite or sometimes whorled, ovate, entire, acute or mucronate, glabrous, green or glaucous, unicostate, reticulate venation.
Inflorescece: 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.
Corolla: Petals – 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.
Gynoecium: Carpel – 1, monocarpellary. Ovary: superior, unilocular, marginal placentation. Style – curved. Stigma – capitate or hairy.
Fruit: Legume or pod
Seed: 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
Tags:
Biology