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Pakistan | Family List | Malvaceae | Sida

Sida cordata (Burm.f.) Borss. in Blumea. 14(1): 182. 1966. Stewart in Nasir & Ali, Ann. Cat. Vase. Pl. W. Pak. Kash. 483.1972; S. Abedin in Pak. J. Bot. 11(1):39.1979.

  • Melochia cordata Burn.f.
  • Sida humilis Cay.
  • Sida humilis var. veronicifolia (Lamk.) Mast.
  • Sida morifolia Cay.
  • Sida radicans Cay.
  • Sida unilocularis L’Herit
  • Sida veronicifolia Lamk.
  • Sida veronicifolia var. humilis (Cay.) K.Sch.

    Prostrate or semiprostrate herb, up to 80 cm tall. Profusely branched at the base, all parts stellate pubescent, mixed with simple spreading hairs on branches, petioles, pedicels and calyx. Leaves 1-5.5 cm long, 1-5 cm broad, narrowly to broadly ovate, lanceolate in terminal branches, crenate to serrate, cordate or rounded at base, acuminate at apex, lower surface stellate pubescent, upper one with stellate and simple, strigose hairs; stipules filiform, 2-4 mm long; petiole 1-4 cm long. Flowers axillary, solitary or pseudoraceme by reduction of leaves in the terminal parts; pedicel 1.5-2.5 cm long, in fruit up to 3.5 cm, jointed slightly above the middle. Calyx fused to the middle, 4-5 mm long and broad; lobes c. 2mm broad, acuminate. Corolla pale yellow, 7-8 mm across. Staminal column 2-3 mm long, simple hairy. Fruit depressed globose, 3-4 mm across, pubescent at the top, beaked; mericarps 5, dehiscent, membranous, smooth, disintegrated at the radial surfaces, 2.5 mm long. Seeds brown, c. 2 mm long, glabrous.

    This is a highly variable species in indumentum and inflorescence. Variation in the inflorescence sometimes gives the illusion of the presence of at least 2 taxa. It has been observed in the herbarium specimens that there is continuous variation in the inflorescence hence the separation of taxa on the basis of this character is not advisable.

    However, discontinous variation has been observed in the colour of branches and pedicels, and in the stiffness of pedicels on the basis of which 2 taxa may be easily delimited.

    1 Entire plant green; pedicel slender   Sida cordata var. cordata
    + Branches and pedicels purple; pedicels wiry, very thin, thread-like   Sida cordata var. nasirii

    Lower Taxa


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