Hibiscus may be a genus of flowering plants within the Malvaceae , Malvaceae. It is an outsized genus covering many species native to tropical and subtropical regions with warm temperate features across the planet .
A floral formula is the numeric representation of various floral structures that constitute a flower. It is used to describe a flower using some signs and symbols, so as to designate various floral parts.
The Floral Formula of Hibiscus Rosa Sinensis is
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Systematic Position of Malvaceae
Division: Embryophyta Siphonogama
Sub Division: Angiospermae
Features of Malvaceae Species
Some Common Plants
Size And Distribution
The family has nearly 25 genera and nearly 1500 species widely spread in tropical and temperate regions. In India the Malvaceae family is represented by 22 genera and about 125 species.
Description of The Family
Habitat: most members are terrestrial mesophytes.
Root: Typically they possess a faucet rootage with profuse branching
Stem: aerial, branched, erect, herbaceous, cylindrical, and woody with young portions covered by satellite hairs or trichomes. Typically, the stem displays fibrous nature with much mucilaginous sap.
Leaf: leaves are simple, often lobed palmately and are alternate, petiolate, stipulate, cordate or ovate. The margin usually is entire or serrate, venation is unicostate or multicostate, pinnately reticulate. Leaves are generally covered by stellate hair displaying mucilaginous ducts.
Inflorescence: typically cymose, solitary cymes within the leaf axil or raceme.
Flower: Bracteate, bracteolate, actinomorphic, showy, dichlamydeous, complete, pedicellate, heterochlamydeous bisexual, pentamerous and hypogynous, mucilage in floral structures.
Calyx: green, typically 5 sepals, gamosepalous showing valvate aestivation and odd sepal is posterior in position.
Epicalyx: additional calyx like whorl formed by bracteoles on the surface of the calyx. 5-8 bracteoles to the outer calyx, free and green. Number of bracteoles varies in different species.
Corolla: Petals 5, polypetalous bust basally adnate with the staminal column, variously colored, twisted aestivation.
Androecium: Number of stamens, monadelphous, filaments fuse to form a tubular staminal column around gynoecium, anthers reniform, monothecous, extrorse dehiscing transversely or longitudinally
Gynoecium: ong, and straightforward style, slender passing through the staminal tube. Stigma 5, colored and capitate, pentacarpellary syncarpous, ovary superior, ovary pentalocular with several oculi per locule on the placentation . Style branches into many stigmata or twice the amount , as that of carpels.
Fruit: Abortive mostly. Most members of this family exhibit production of capsules which will be a loculicidal capsule.
Seeds: one or more seeds per locule, exalbuminous with a curved embryo
Pollination: members of this family mainly exhibit entomophilous pollination, where flowers are colored brightly alongside extrafloral nectaries.
Salient Features of The Family
Most members of the family exhibit fibrous stem
Young stems and leaves are going to be covered by stellate trichomes
Members anatomically show the presence of mucilaginous ducts
Flowers show polypetalous condition with contorted aestivation
Androecium displays numerous stamens, showing monadelphous conditions. Anthers are reniform and are monothecous. The staminal column encloses the gynoecium.
The gynoecium is multicarpellary, multilocular, syncarpous, superior ovary with axile placentation
The fruit is typically a schizocarp or capsule.