Nile region (Cairo).
Pantropical Weed.
The bark is a good fiber source, and the roots are used medicinally.
Sida acuta, the common wireweed,[3] 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.[4]
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.[5]
Undershrub, with mucilaginous juice, aerial, erect, cylindrical, branched, solid, green.
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.
Cymose
Small, axillary, 2–3 in a cluster; pedicels jointed at the middle, epicalyx absent, complete, bisexual, regular, actinomorphic, hypogynus, pentamerous, yellow.
Sepals: five, gamosepalous, campanulate, slightly accrescent, persistent, valvate.
Petals: five, polypetalous but slightly connate below and jointed with the staminal column, twisted.
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.
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.
A schizocarpic mericarp, seed 1 in each mericarp.
I) Reticulate venation.
II) Flower pentamerous.
I) Petals free.
I) Flower hypogynus; ovary superior.
I) Stamens indefinite, monadelphous.
II) Ovary 5 carpellary, placentation axile.
I) Plant: mucilaginous.
II) Leaves: simple with free lateral stipule.
III) Flower: bisexual, petals: five, twisted; monadelphous stamen, anther one-celled, reniform.
I) Staminal column without teeth at apex.
II) Flowers without epicalyx.
III) Ovule 1 in each locule; seed 1 in each mericarp.
I) Leaf base obtuse, apex acute.
Br,+,K⁵,C⁵^,A_,G(⁵)
5. S. acuta Burm.f.(Fl. ind. 147. 1768) emend. K.Schum. Fl. Bras. 12: 326. 1891. 1: 15. t. 2. 1785; Sub. sp. acuta. Cav. Diss. Roxb. Fl. Ind. 3; 171. 1832; Prain. Beng. Pl. I: 259. 1903; Heinig, Enum. 90. 1907; Gamble, Fl. Pres. Madras 90. 1915; Haines, Bot. Bih. Or. 61. 1925; Borss. in Blumea 14 (1: 187. 1966) S.carpinifolia sensu Masters in Hook. f. Fl. Brit. Ind. 1: 323. 1874. non L. f. ; Kanjilal et al. Fl. Assam 1(1) : 140. 1934; S.carpinifolia var. acuta (Burm. f) Kurz in Journ. Asiat. Soc. Beng. II. 45(2) : 119. 1876; S. scoparia Lour. Fl. Cochinch. 114. 1790; S. lanceolata Retz. Obs. Bot. 4: 28. 1786; Roxb. Fl. Ind. 3: 175. 1832; S. stauntoniana DC. Prodr. 1: 460. 1824; S.paucifolia DC. Prodr. 1: 472. 1824; S. acuta var. intermedia Hu,Fl. China(Fam.153) : 19. 1955; Deb. D.B . Fl. Tripura 1: 306. 1981.
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.
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.
