Dictionary > Avicennia germinans

Avicennia germinans

Definition
noun
(botany) A plant species of the family Acanthaceae, and is commonly known as the black mangrove
Supplement
Mangrove in a broader sense refers to any tree, shrub, or vegetation that thrives in estuarine or saline habitat. In stricter sense though it pertains to the plant species of the genus Rhizophora, such as R. mangle and R. mucronata. A mangrove may also pertain to the habitat where these plants thrive. Avicennia germinans is one of the plant species considered as part of the mangrove. It is a shrub in the family of Acanthaceae (acanthus family). It is native to the Atlantic and Pacific coasts. Similar to other mangrove species, this plant is viviparous.
The black mangrove plant is able to withstand and survive a highly anaerobic habitat by forming pneumatophores. Pneumatophores are a type of aerial root. Aerial roots are roots that grow from above the ground and absorb water directly from the air. Pneumatophores are formed by certain plant species submerged in water, in waterlogged soil, or in strongly compacted soil. They emerge from the typical roots and then stick up out of the soil. The root surface of the pneumatophores is covered with lenticels, i.e. raised pores allowing gas exchange between the atmosphere and the internal tissues. The lenticels take up air into the spongy tissue of the pneumatophore. The oxygen is then spread throughout the plant.
Scientific classification:

  • Kingdom: Plantae
  • Order: Lamiales
  • Family: Acanthaceae
  • Genus: Avicennia
  • Species: A. germinans

Other common name(s):

  • black mangrove
  • See also:


    You will also like...

    Plant Auxins
    Plant Auxins – Phototropism & Geotropism

    Plants produce hormones to regulate their growth. Auxins, for instance, influence plant growth. Know the role of auxin i..

    Non-Mendelian Inheritance
    Non-Mendelian Inheritance

    In this tutorial, find out more about certain types of inheritance that does not follow the Mendelian inheritance patter..

    Growth and Plant Hormones
    Growth and Plant Hormones

    Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

    Chemical effects on plant growth and development
    Effect of Chemicals on Growth & Development in Organisms

    Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..

    Freshwater lake ecosystem
    Freshwater Producers and Consumers

    Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..

    Selective Breeding
    Selective Breeding

    Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural select..