Sida cordifolia Linnaeus (1753: 684)

Brandão, José Lourenço, Baracho, George Sidney, Sales, Margareth Ferreira De & Filho, Marcelo Paulino Viegas, 2017, Synopsis of Sida (Malvaceae, Malvoideae, Malveae) in the state of Pernambuco, Brazil, Phytotaxa 307 (3), pp. 205-227 : 211

6. Sida cordifolia Linnaeus (1753: 684) ( Figs. 2A , 4B ). Lectotype (designated by Borssum-Waalkes 1966: 200):— Habitat in India, cordifolia . 4, Herb. Linnaeus 866.12 (LINN, photo!).

Taxonomic notes: — Sida cordifolia is distinguished from all other species of section Cordifoliae ( Fryxell 1985) by having leaves cordate, ovate to ovate-oblong, densely covered with stellate trichomes; terminal flowers variously disposed and aggregated into racemiform or paniculate inflorescences, axillary flowers commonly solitary or weakly paired or aggregated; calyx 10-ribbed, stellate-tomentose, pedicels 10–20 mm long, articulate 0.5 mm or ½ below the calyx; corolla yellow, yellow-orange, pale rose or salmon; stamens 30–40, the filaments organized in 5–7 phalanges; and mericarps 7–12, prominently biaristate, and spines retrorsely barbed. It is a highly variable widely distributed species, and one of the most polymorphic species in Sida .

Distribution and habitat: —Widely distributed in pantropical and subtropical regions ( Fryxell 1985) including all Brazilian regions. In Pernambuco, S. cordifolia occurs widely from Littoral to Caatinga, at different habitats, soils, altitudes, and in disturbed (mixed secondary forests, dried river beds, cultivations and plantations) or urbanized areas (in dry and ruderal places, roadsides or wastelands).

Representative specimen: — BRAZIL. Pernambuco. Altinho, Sítio Poços Pretos, 31 October 1996, fr., G.S. Baracho & J.A. Siqueira-Filho 304 (UFP).

Figures

FIGURE 2. A: Sida cordifolia, flowers and leaves. B–C: Sida galherensis. B: morphotype I, flower without dark center; C: morphotype II, flower with dark center. D–E: Sida glomerata. D: habit; E: flower. F: Sida glutinosa, habit. G–J: Sida harleyi. G: morphotype I, lilac flower with vinaceous center; H: morphotype II, salmon flowers with red center; I: morphotype III, yellow flower without dark center; J: schizocarp with glochidate mericarps. Photos: G.S. Baracho.

FIGURE 4. A–B: Distribution maps of Sida species in the State of Pernambuco, Brazil. A: Sida abutilifolia (Î); S. acuta (z); S. angustissima (|); S. brittonii (Ɨ); S. cerradoensis (D); S. harleyi (Δ). B: Sida cordifolia (Î); S. galheirensis (z); S. glomerata (|); S. glutinosa (Ɨ); S. jussiaeana (D); S. linifolia (Δ).