Angiosperm Families


   
 
Sub Family: Caesalpiniodeae (Caesalpinae)
 
Characteristic Features
Habit: Mostly trees and shrubs, rarely herbs, some are climbers (Bauhinia).
 
 
      fig.27.25 Habit and L.S. of flower of Cassia fistula
 
 
fig. 27.26 Bauhinia
 
Root: Taproot.
 
Stem: Woody, or herbaceous, branched.
 
Leaves: Compound, alternate, stipulate, pulvinate and simple.
 
Inflorescence: Racemose, panicle or umbel.
 
Flower: Bracteate, zygomorphic, pedicellate, bisexual, heterochlamydeous, pentamerous and hypogynous.
 
Calyx: Sepals 5, free or united, imbricate aestivation.
 
Corolla: Petals 5, polypetalous, imbricate aestivation.
 
Androecium: Stamens 10, free, of different sizes, anthers dithecous.
 
Gynoecium: Monocarpellary, unilocular with ovules on marginal placentation. Ovary superior.
 
Fruit: Legume or lomentum.
 
Seed: Large, non-endospermic.
 
 
       fig. 27.27 Floral parts, T.S. of ovary, Floral diagram
 
 
    Floral formula
 
Common Examples
Edible
 
1. Bauhinia veriegata (Kachnar): buds used as vegetables.
 
2. Cassia tora : tender leaves used as a vegetable.
 
Medicinal
 
1. Cassia fistula: Used as a purgative
 
2. Cassia glauca: Used for treating diabetes
 
3. Saraca indica: (Ashoka tree) for curing uterine infections is also used as an ornamental tree.
 
Dye Yielding
 
1. Hematoxylon campuchianum: Yields the dye hematoxylene used for staining cells.
 
2. Caesalpinia sappan: Yields a dye used for colouring textiles.
 
Ornamental
 
1. Delonix regia (Gulmohur)
 
2. Caesalpinia pulcherrima (peacock flower)
 
Others
 
1. Tamarindus indica (tamarind tree)
 
2. Hardwickia binata - wood used for making agricultural implements.
 
 
fig. 27.28 Common Examples of SubFamily Caesalpiniodeae
 
 
     
   
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