Sida angustissima Saint-Hilaire (1827: 179)

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 : 210

3. Sida angustissima Saint-Hilaire (1827: 179) ( Figs. 1D , 4A ). Type:— BRAZIL. Minas Gerais: lecta in parte desertà occidentalique provinciae Minas Geraes propè praedium Olho d’Agoa haud longè à vico Contendas. Florebat Septembre, Octobre , 1816–21, ft., Saint-Hilaire s.n. (holotype, P, photo!; isotype, US, photo!).

Taxonomic notes: — Sida angustissima is placed in Sida sect. Cordifoliae based on the following combinations of features: leaves 1–5.5 × 0.2–0.3 cm, narrowly linear or linear-lanceolate; solitary flowers in the axils or in aggregated racemes; calyx 0.5–0.7 × 0.5–0.8 cm, not accrescent; stamens 45–55 in number; and mericarps 6–9, laterally reticulate, prominently aristate, the spines 0.1–0.25 cm long, retrorsely barbed.

Distribution and habitat: —Endemic to Brazil, this species is rather heliophilous, occurring throughout northeastern, from the Piaui to the western Bahia and Distrito Federal. Towards the southeast, in Minas Gerais along the Cadeia do Espinhaço. In Pernambuco, S. angustissima occurs in the Caatinga zone, and inhabits mainly the arid and rocky soils of the plains and mountains, at altitudes from sea level to above 800 m.

Representative specimen: — BRAZIL. Pernambuco. Buíque, estrada Buíque-Catimbau, Sítio Bom Jesus, 21 October 1996, fr., G.S. Baracho & J.A. Siqueira-Filho 265 (UFP).

Figures

FIGURE 1. A: Sida abutilifolia, flower and leaf. B–C: Sida acuta. B: habit; C: flower and leaf. D: Sida angustissima, flower and leaf. E–F: Sida brittonii. E: flower; F: flower bud and leaves. G–H: Sida cerradoensis. G: habit; H: flower. 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).