This document summarizes key details about the Mimosaceae family. It belongs to the order Rosales and contains important trees and shrubs like the acacia, mimosa, and albizzia. The family is characterized by alternate, compound leaves and flowers with 4-5 sepals/petals. Several species have economic uses - Acacia senegal and catechu produce gum arabic; Adenanthera pavonina yields a red dye; and various trees provide timber, medicine, or food.

1. Mimosaceae
acacia family
Submitted by,
Duedy thomas

2. Systematic Position
CLASS: Dicotyledons
SUBCLASS: Polypetalae
SERIES: Calciflorae
ORDER: Rosales
FAMILY: Mimosaceae

3. Common Members
 Mimosa pudica (ത ൊട്ടൊവൊടി)
 Acacia intsia (ഇഞ്ച)
 Acacia senegal (gum arabic)
 Acacia chundra (കരിങ്ങൊലി)
 Acacia mangium (black wattle)
 Adenanthera pavonina മഞ്ചൊടി)
 Albizzia saman (മഴമരം)
 Entada rheedi (കൊക്കവള്ളി) (african dream herb)
 Xyila xylocarpa( ഇരുൾ)

4. Acacia
chundra(കരിങ്ങൊലി)
Acacia senegal(gum arabic)

5. Xylia xylocarpa(ഇരുൾ)

6. Albizzia saman (മഴമരം) Mimosa pudica

7. Entada rheedi(കൊക്കവള്ളി) -climber

8. CHARACTERISTIC FEATURES
HABIT: Tress/ Shrubs/Climbers.
Many of them are throny and xeromorphic.
ROOT: Tap and Branched, deeply rooted in the soil.
STEM: Erect, branched, slightly tapering, woody, solid.Stem tissue is often rich in tannin sacs and
gum passages.
LEAVES: Alternate, Petiolate, (base of the petiol is provided with pluvinous., Stipules present;
usually modified into throns, Compound, pinnate(generally bipinnate).
INFLORESCENCE: head/spike. (Linear or globose spike).
FLOWERS: Each flower is bisexual, actinomorphic, dichlamedous ,perigynus, tetra/pentamerous,
regular,cyclic, perfect and complete.
Hypanthium cup is present

9. CALYX: 4/5 sepals, gamosepalous, valvate aestivation.
COROLLA: 4/5 petals, free or united ( united slightly towards the base.), Valvate aestivation.
ANDROECIUM: indefinite number of stamens, free or rarely
united at the base. Filaments are long,slender and coloured.

10. GYNOECIUM: monocarpellary, superior ovary, unilocular, many ovules on marginal placentation,
style long filiform(thread like), flat/pointed stigma.

11. FRUIT: legume/lomentum

12. phylogeny
 Bentham and Hooker placed family Leguminosae in the order Rosales, due to the presence of
perigynus flowers and due to the absence of syncarpy.
 3 subfamilies are there under Leguminosae- Papilieoideae, Caesapinoidae, Mimosoideae.
 Conquist considered Mimosaceae as the most primitive in the order fabales.

13. Economic Importance
 This sub-family is not of much economic importance. A few members are however useful.
 Acacia catechu serves as a host for the lac insects. From this plant Katha is also obtained.
 Gum arabic is obtained from the barks of A. Arabica and A. senegal.
 Saresh- a type of gum – is obtained from Albizzia lebbek.
 The flowers of A. decurrens var. dealbata yield a perfume.
 The bark of Acacia yields tannin which is used in leather tanning.
 The wood of Adenanthera pavonina is powdered and yields a red dye.
 Prosopis spicigera is grown as a hedge plant and also as a wind breaker in Rajasthan to check
spreading desert, acts as water indicator.
 Durable timber is obtained from Acacia melanoxylon, Lysistoma sabicu, Xylia dolabriformis (Iron
wood).
 Xylia xylocarpa: The wood pulp may be used for making wrapping paper. The seeds of this
tree are edible. This tree is considered a medicinal plant in India. In Thailand its leaves are used
to treat wounds in elephants.

14.  Entada rheedi:This plant is also used as a topical ointment against jaundice, toothache, ulcers and
to treat muscular-skeletal problems.
 A. mangium is widely used in commercial plantations to provide products such as pulp, firewood,
charcoal, construction material; it is also used for soil protection and ecological restoration
purposes and as a food source for bees .
 A. chundra:The bark is medicinal and used to cure diarrhoea. A combination of the bark and root
boiled in water helps to bring down high blood pressure. Strong timber can be used for
construction and agricultural implements. Wood is very hard; used for agricultural implements,
rice pounders and as fuelwood.

15. Thank you😊