Sida acuta

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Species of flowering plant

title: "Sida acuta" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["sida-(plant)", "flora-of-southern-america", "flora-of-central-america", "flora-of-tropical-asia", "flora-of-china", "flora-naturalised-in-australia", "plants-described-in-1768", "pantropical-flora", "taxa-named-by-nicolaas-laurens-burman", "constantly-blooming-plants"] description: "Species of flowering plant" topic_path: "geography/china" source: "https://en.wikipedia.org/wiki/Sida_acuta" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Species of flowering plant ::

|name = Common wireweed |image = Sida acuta (Jangli-methi) in Hyderabad, AP W2 IMG 0084.jpg |genus = Sida |species = acuta |authority = Burm.f. |synonyms = Sida carpinifolia L.f.

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.{{cite book |title=Noxious weeds of Australia |first=William Thomas |last=Parsons |author2=Eric George Cuthbertson |edition=2 |publisher=CSIRO Publishing |year=2001 |isbn=978-0-643-06514-7 |pages=508–509}}

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.

Description

Plant

Undershrub, with mucilaginous juice, aerial, erect, cylindrical, branched, solid, green.

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: five, gamosepalous, campanulate, slightly accrescent, persistent, valvate.

Corolla

Petals: five, polypetalous but slightly connate below and jointed with the staminal column, twisted.

Androecium

Stamens many, monadelphous, arranged on the staminal column; staminal column is shorter than the petals, divided above into numerous filaments, anthers monothecous, reniform, basifixed, filament short, extrorse. Pollen are spherical with spikes, size is approximately 90 microns.

::figure[src="https://upload.wikimedia.org/wikipedia/commons/f/f7/Pollens_of_Sida_acuta_2.jpg" caption="Pollen grains of Sida acuta"] ::

Gynoecium

Carples: five, 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 carpels.

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: mucilaginous.

II) Leaves: simple with free lateral stipule.

III) Flower: bisexual, petals: five, twisted; monadelphous stamen, anther one-celled, reniform.

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.

Floral formula of ''Sida acuta''

Br,+,K⁵,C⁵^,A_,G(⁵)

Names

Vernacular name

Source:

References

References

  1. {{GRIN
  2. "Sida carpinifolia L. f.". [[Integrated Taxonomic Information System]].
  3. {{PLANTS
  4. (2012). "Biological Control of Weeds in Australia". Csiro Publishing.
  5. Mukherjee, H.. (1981). "Plant Groups". [[New Central Book Agency Pvt Ltd]].
  6. Deb, D.B.. (1981). "The Flora of Tripura State Vol. I". [[Today & Tomorrow's Printers and Publishers]].

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::

sida-(plant)flora-of-southern-americaflora-of-central-americaflora-of-tropical-asiaflora-of-chinaflora-naturalised-in-australiaplants-described-in-1768pantropical-florataxa-named-by-nicolaas-laurens-burmanconstantly-blooming-plants