Descripcion

Subshrubs 0.85 m tall; branches pubescent. Stipular prickles straight, 3–4 × 2–3 mm. Leaves 3- to 5-foliolate; petioles pubescent, armed with slender to stout prickles, 4–6 cm; leaflets elliptic to oblanceolate, 3.5–5 × 1.5–2.3 cm, basally cuneate to attenuate, apically acute, petiolules pubescent, armed, 1–2 mm, margin serrulate-ciliate, surface pubescent on both sides, midrib and secondary veins pubescent, with prickles. Inflorescence of corymbiform racemes, terminal, 20–36 cm; floral bracts subtending lower flowers leaflike, with 3 to 5 leaflets, becoming 1-foliolate, petiolate, petioles puberulent, with a pair of stout prickles at the base, 2–9 mm, blade ovate, 15–25 × 5–15 mm, basally rounded, apically acuminate, margin serrulate-ciliate, with scattered, short, pointed hairs adaxially, glabrous abaxially. Flowers with pedicels 10–16 mm, puberulent; sepals linear-triangular to narrowly lanceolate, 4–6 × 0.5 mm, acute, margin ciliate, pubescent abaxially; petals elliptic, 5–8 × 2–2.5 mm, basally contracted into a claw, claw 1.5–4 mm, apically obtuse, purple, glabrous; nectary conic, inconspicuous fleshy, obsolete in fruit; filaments 7–12 mm, purple; anthers 8–10 mm; ovary fusiform, 5–6 × 1–2 mm, glabrous; style absent; stigma pronouncedly capitate, sessile. Fruits on a gynophore 5–10 mm, fusiform, slightly inflated, 3.7–5 cm × 5–8 mm, glabrous. Seeds suborbicular, 2–2.5 × 1–1.5 mm, seemingly smooth, discreetly longitudinally striate, with a few transverse ridges, cleft covered by a smooth membrane.

Distribucion y Habitat

The species is distributed in Argentina, Brazil, and Uruguay (Fig. 10C). It occurs in open, sandy, grassy fields and along riversides and borders of woods.

Ejemplares de referencia

Colector N° Colect. Especie Departamento Provincia Imagen
  • Arechavaleta, J.
  • 4507 a Montevideo
  • Burkart, A.
  • 6745 Islas del Ibicuy Entre Ríos
  • Burkart, A.
  • 7645 Islas del Ibicuy Entre Ríos
  • Burkart, A.
  • 25733 Islas del Ibicuy Entre Ríos
  • Cabrera, A. L.
  • 7568 La Plata Buenos Aires
  • Cabrera, A. L.
  • 9912 La Plata Buenos Aires
  • Esposito, E.
  • 350 -
  • Felippone, F.
  • 5381 -
  • Hicken, C. M.
  • 213 (SI 924) Buenos Aires
  • Hicken, C. M.
  • 423 (SI 915) Buenos Aires
  • Lanfranchi, A. E.
  • 1724 General Pueyrredón Buenos Aires
  • Marelli, C. A.
  • 523 Ensenada Buenos Aires
  • Múlgura, M. E.
  • 4263 25 de Mayo Buenos Aires
  • Rodríguez, F. M.
  • 191 (SI 162689) Quilmes Buenos Aires
  • Rodríguez, F. M.
  • 191 (SI 162689) Quilmes Buenos Aires
  • Rodríguez, F. M.
  • 191 (SI 162689) Quilmes Buenos Aires
  • Rodríguez, F. M.
  • 191 (SI 162689) Quilmes Buenos Aires
  • Scala, A. C.
  • 131 Buenos Aires
  • Troncoso, N. S.
  • 2550 Gualeguaychú Entre Ríos
  • Troncoso, N. S.
  • 2550 Gualeguaychú Entre Ríos

    Nombre Vulgar y Usos

    Tipo y Observaciones

    Material Tipo: Basónimo: Cleome titubans Speg.
    Observaciones: Phenology.- It has been collected with flowers in December and with fruits in February, July, and December. Discussion.- Tarenaya titubans is easily recognized by the presence of a pair of stout prickles at the base of the floral bracts’ petioles, purple petals, and fusiform, slightly inflated capsules.