Acacia nilotica commonly known as Gum arabic tree. It is a member of the Leguminosae family. These are members of the subfamily Mimosoideae in the Leguminosae family. In this article, we will learn about the position of leaves, flowers, and fruits in the Gum arabic tree.
Scientific Name: Acacia nilotica
Some Basic Information about Acacia nilotica
Habit– A medium-sized spiny tree.
Root– Tap root, branched.
Stem– Erect, woody, branched, solid, cylindrical.
Leaf– Petiolate, bipinnately compound, stipulate (stipules modified into spines), leaflet ovate with entire margin, unicostate reticulate venation.
Inflorescence– Cymose head.
Flower– Bracteate, sessile, complete, actinomorphic, hermaphrodite, hypogynous, small and yellow.
Calyx– Sepals 4-5, gamosepalous, campanulate, valvate aestivation, inferior.
Corolla– Petals 4-5, gamopetalous, tubular, valvate aestivation, yellow.
Androecium– Stamens numerous, polyandrous, long filaments, minute anthers, introrse and versatile fixation, dithecous.
Gynoecium– Monocarpellary, ovary superior, unilocular, marginal placentation, style long, stigma minute.
Fruit– Lomentum.
Floral formula– Br ⊕ ⚥(4-5) C(4-5) A∞ G1
Systematic Position:
Division – Phanerogamia
Subdivision – Angiospermae
Class – Dicotyledonae
Subclass – Polypetalae
Series – Calyciflorae
Order – Rosales
Family – Leguminosae
Subfamily – Mimosoideae
Genus – Acacia
Species – nilotica
