Skip to main content
UploadLanguage (EN)Support
BusinessMobileSocial MediaMarketingTechnologyArt & PhotosCareerDesignEducationPresentations & Public SpeakingGovernment & NonprofitHealthcareInternetLawLeadership & ManagementAutomotiveEngineeringSoftwareRecruiting & HRRetailSalesServicesScienceSmall Business & EntrepreneurshipFoodEnvironmentEconomy & FinanceData & AnalyticsInvestor RelationsSportsSpiritualNews & PoliticsTravelSelf ImprovementReal EstateEntertainment & HumorHealth & MedicineDevices & HardwareLifestyle
CT
Uploaded byChandresh Thakor
PDF, PPTX9,219 views

EUPHORBIACEAE FAMILY PPT

The document provides an overview of the Euphorbiaceae family classified under the Dicotyledons. It details the family characteristics, such as unisexual flowers, the structure of leaves, stems, fruits, and pollination mechanisms. Additionally, it mentions the economic importance of certain species, including Emblica officinalis and Ricinus communis, highlighting their uses in food and products like castor oil.

Education◦
EUPHORBIACEAE Chandresh M Thakor. MUIS_Msc_Botany Semester_02 Enrollment number_22064601007
CLASSIFICATION –BENTHAM AND HOOKER  Kingdom : Plantae   Class : Dicotyledons   Subclass : Monochlamydae   Series : Unisexual   Family : Euphorbiaceae
IDENTIFICATION OF CLASSIFICATION 1.Class:Dicotyledons •Venation reticulate •Flowers pentamerous. 2.subclass:Monochlamydeae •Flowers usually with one whorl of parienth.
CONTINUE...... 3.Series:Unisexuales • Flowers unisexual. • Perianth much reduced or absent. • Ovules 1 to 2 per carpel. 4.Family:Euphorbiaceae • Alternate leaves. • Stamens 1 to indefinite (free or united). • Gynoecium tricarpellary • Ovary superior.
GENERAL CHARACTER There are about 283 genera and 7,300 species in this family. • Habit •The plants exhibit great variation in their habit. •The plants may be herbs, shrubs or trees. • Root •Tap root , branched.d branched
CONTINUE......  Stem •Herbaceous or woody, erect, •The stem is branched. •It may be cylindrical, angular or flat. •Many stems possess spines. • In many Euphorbia sp., the stems become, fleshy, green and cactus like in appearance.
CONTINUE......  Leaves •The arrangement is usually alternate but, sometimes they are opposite • In many Euphorbias the leaves are scaly and caducous. •In many Euphorbia sp., they are represented by glands or spines.
CONTINUE.....  Inflorescence: •The inflorescence varies greatly. •It may be racemose or cymose or sometimes complex.  Flower: • The flowers are incomplete, regular, actinomorphic and hypogynous. •The flowers are always unisexual.
CONTINUE.....  Perianth: •The perianth consists of 4 or 5 sepals or petals. •The aestivation is valvate or imbricate. •Occasionally, both calyx and corolla are present, e.g., Croton. •. In majority of cases either calyx or corolla or both are absent. • In Ricinus communis the calyx is present and the corolla absent.
CONTINUE.....  Androecium: •The number of stamens varies from one to many. •In Ricinus sp., usually five stamens are present, each stamen is profusely branched. •In Jatropha they are arranged in two whorls each of five stamens. •In many the stamens are indefinite, e.g., Croton.  Gynoecium: •Three carpels (tricarpellary), syncarpous; the ovary is trilocular, superior.
CONTINUE.....  Fruit: •drupe fruit •The fruits are schizocarpic.  Seeds: •The seed is endospermic.  Pollination:  Usually entomophilous, i.e., through the agency of insects. Only cross- pollination takes place.
FLORAL FORMULA & DIAGRAM Floral formula Floral diagram MALE FEMALE
ECONOMIC IMPORTANCE  Emblica officinalis A common tree with edible fruits The pickle or jam is prepared from the fruits. The fruit is very rich in vitamin C.  Ricinus communis The seeds are the source of castor-oil, which is mainly used as a lubricant and as a purgative. It is also used for transparent soap, textile soap
CONTINUE  Some of the plant species of this family which are ornamental are as follows, Jatropha gossypifolia Acalypha hispida Euphorbia pulcherrima
EUPHORBIACEAE FAMILY PPT