• Home
  • Biology XI
  • Angiosperms
  • Lesson 3 Family Liguminosae - Description in Semi-Technical Terms

Cell Biology


Kingdom Monera

Kingdom Plantae


Biota and Environment

Practical Exam

Viva Voice From Description of Flower

Exam paper collection

Extra Lessons

Lesson 3 Family Liguminosae - Description in Semi-Technical Terms

Liguminosae - General Description in Semi-Technical Terms

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)

Habit / Habitat: Annual herbs or perennial shrubs or trees, some are climbers, cultivated or wild, usually mesophytic.

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.

Available Files

  • No Files at the moment

We're always listening.

Have something to say about this article? Find us on Facebook


You may also like to read

The Magic of Words

21 lessons


English NEW COURSE 11

34 lessons


Meaning into words Playground

22 lessons