Amaranthacaeae

Family: Amaranthacaeae

 

Taxonomic position According to Cronquist (1981)

Kingdom                     :Plantae

Division                       :Magnoliophyta

Class                            :Magnoliopsida

Order                           :Caryophyllalase

Family                         : Amaranthaceae

Genus                          : Amaranthus

Identifying characters

• Gnerally herb
• Inflorescence spike
• Flower small having bract or bracteole
• Perianth membranous and shiny
• Fruit generally nutlet
• Seed black and shiny

External Morphology

Habit: many of them are generally annual herb

Root: tap root

Stem: Soft, angular or cylindrical, spinous or glabrous

Leaf: simple, mergin entire, alternate, petiolate, reticulated venation

Inflorescence: simple or compound spike

Flower: bisexual, small, actinomorphic, pentamerous

Perianth: tepal 5, persistent, aestivation imbricate

Androecium: stamen 5

Gynoecium:  Carpel 2-3, syncarpous, ovary superior, placentation basal

Fruit: nutlet, sometime berry

Floral formula: 

Table Economically important plant