Samiksha Jaiswal (Editor)

Sida acuta

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Kingdom  Plantae
Family  Malvaceae
Scientific name  Sida acuta
Rank  Species
Order  Malvales
Genus  Sida
Higher classification  Sida
Sida acuta  with bearing its bearing  flowers

Similar  Sida, Mallows, Sida rhombifolia, Sida cordifolia, Urena lobata

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Sida acuta, the common wireweed, is a species of flowering plant in the mallow family, Malvaceae. It is believed to have originated in Central America, but today has a pantropical distribution and is considered a weed in some areas.

Contents

In northern Australia, Sida acuta is considered an invasive species, and the beetle Calligrapha pantherina has been introduced as a biological control agent in an attempt to control the plant.

Sida acuta and its yellow flower

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Description

Plant- Undershrub, with mucilagenous juice, aerial, erect, cylindrical, branched, solid, green.

Sida acuta with its two flowers

Leaves- Alternate, simple, lanceolate to linear, rarely ovate to oblong, obtuse at the base, acute at the apex, coarsely and remotely serrate; petiole much shorter than the blade; stipulate, stipules free-lateral, unequally paired at the node, reticulate venation.

Inflorescence- Cymose

Flower- Small, axillary, 2-3 in a cluster; pedicels jointed at the middle, epicalyx absent, complete,

bisexual, regular, actinomorphic, hypogynus, pentamerous, yellow.

Calyx- Sepals 5, gamosepalous, campanulate, slightly accrescent, persistent, valvate.

Corolla- Petals 5, polypetalous but slightly connate below and jointed with the staminal column,twisted.

Sida acuta with its yellow flower

Androecium- Stamens many,monadelphous, arranged on the staminal column; staminal column is shorter than the petals,divided above into numerous filaments, anthers monothecus, reniform, basifixed, filament short, extrorse.

Gynoecium- Carples 5, syncarpous, ovary superior,penta or multilocular with axile placentation, one ovule in each locule; style 1, passing through the staminal tube; stigma globular,correspond to the number of carples.

Fruit- A schizocarpic mericarp, seed 1 in each mericarp.

Classification and Identification(Bentham and Hooker's system)-

Class- Dicotyledonae

I) Reticulate venation.

II) Flower pentamerous.

Sub Class- Polypetalae

I) Petals free.

Series- Thalamiflorae.

I) Flower hypogynus; ovary superior.

Order- Malvales

I) Stamens indefinite, monadelphous.

II) Ovary 5 carpellary, placentation axile.

Family- Malvaceae

I) Plant- Mucilagenous.

II) Leaves- Simple with free lateral stipule.

III) Flower- Bisexual,; petals 5, twisted; monadelphous stamen, anther one celled, reniformed.

Genus- Sida

I) Staminal column without teeth at apex.

II) Flowers without epicalyx.

III) Ovule 1 in each locule; seed 1 in each mericarp.

Species- S.acuta

I) Leaf base obtuse, apex acute.

Vernacular name[6]-

Sanskrit- Bala; Bengali- Kureta/ Berela[7](in Tripura) ; Hindi- Kareta/ Kharenti ; Oriya- Siobala ; Gujrati- Bala/ Jangli menthi ; Marathi- Chikana ; Malayalam- Malatanni ; Tamil- Malaidangi ; Telegu- Nelabenda ; Kannada- Vishakaddi ; Sinhala- Gasbevila ; Burmese- Katsayna ; Yoruba-Ìsékètu.

References

Sida acuta Wikipedia