Euphorbiaceae, Classification, Morphology, Uses, Important Plants

Euphorbiaceae is a large family of flowering plants. It includes approximately 300 genera and 7,500 species, which are mostly herbaceous plants, shrubs, and trees. These plants are known for their unique characteristic of producing latex, a milky sap that serves as a defense mechanism.

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Euphorbiaceae

  Classification of Euphorbiaceae

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Morphology of Euphorbiaceae

• Some species, like Cnidoscolus stimulosus (tread-softly), are covered with stinging hairs that can irritate the skin.
• Flowers are usually unisexual, with both male and female flowers typically on the same plant.
• Petals are often absent.
• The largest genus, Euphorbia, has flowers in cup-shaped clusters called cyathia.
• Each cyathium appears to be a single female flower but consists of one pistil surrounded by multiple male flowers, each with a single stamen.
• Clusters are enclosed by an involucre of bracts, resembling a corolla (whorl of flower petals).
• Male flowers may have one to several stamens (either free or joined).
• Female flowers possess three-chambered ovaries that are superior (above other flower parts).
• Each ovary cavity corresponds to a style.
• The fruit is a three-chambered capsule.
• Leaves are typically simple and may be arranged alternately (or rarely opposite or whorled) along the stems.
• Many species have stems that contain a milky latex.

Floral Formula

List of plants in the family Euphorbiaceae

• Cassava (Manihot esculenta)
• Castor-oil plant (Ricinus communis)
• Copperleaf (genus Acalypha)
• Croton (Codiaeum variegatum)
• Jatropha (genus Jatropha)
• Manchineel (Hippomane mancinella)
• Mercury (genus Mercurialis)
• Rubber tree (Hevea brasiliensis)
• Sandbox tree (Hura crepitans and H. polyandra)
• Spurge (genus Euphorbia)
• Tallow tree (Triadica sebifera)
• Tung tree (Vernicia fordii)

Uses of Euphorbiaceae

• Many species, such as Manihot esculenta (cassava), have tuberous roots that serve as a vital source of starchy food for many populations.
• Several plants in this family produce oils (e.g., castor oil from Ricinus communis) used in lubricants, paints, and as purgatives.
• Hevea brasiliensis is the primary source of natural rubber, essential for various industrial applications.
• Fruits and parts of certain species, such as Phyllanthus emblica, are known for their medicinal benefits, including antioxidant and anti-inflammatory properties.
• Many Euphorbiaceae species are cultivated as ornamental plants due to their vibrant flowers and unique foliage, enhancing landscaping and gardening.
• Extracts from Euphorbiaceae plants are used in herbal remedies and may have potential in modern medicine.