Descripcion

Subshrubs 0.8–1 m tall; branches glandular-puberulent to glabrescent. Stipular prickles straight, 1–2 × 1 mm, missing in some individuals. Leaves 3- to 5-foliolate; petioles puberulent, unarmed, 2.5–4 cm; leaflets ovate to elliptic or oblanceolate, 1.8–5 × 1–2 cm, basally cuneate or obtuse, apically acute, apiculate, petiolules puberulent, unarmed, 2–4 mm, margin ciliate, surface glabrous on both sides, midrib and secondary veins glabrous, without prickles. Inflorescence of corymbiform racemes, terminal, 20–30 cm; floral bracts with petioles puberulent, 2–3 mm, blade ovate to elliptic, 15–23 × 5–7 mm, basally obtuse or cuneate, apically acute, apiculate, margin ciliate, puberulent on both sides. Flowers with pedicels 15–25 mm, densely puberulent; sepals triangular to lanceolate, 4–5 × 1 mm, acuminate, margin ciliate, densely puberulent abaxially; petals obovate to widely obovate, 6–8 × 3–4 mm, basally contracted into a claw, claw 6–8 mm, apically obtuse, white, glabrous; nectary conic, inconspicuous fleshy, obsolete in fruit; filaments 20–35 mm, purplish; anthers 4–5 mm; ovary ellipsoid, 2 mm, glabrous; style absent; stigma discoid, sessile. Fruits on a gynophore 30–40 mm, fusiform to oblong, 3–3.5 cm × 3–7 mm, glabrous. Seeds suborbicular, 2.5–3 × 3 mm, longitudinally striate with transverse acute ridges, cleft wide, covered by an opaque aril connecting the claws.

Distribucion y Habitat

It occurs in Argentina, Bolivia, and Paraguay (Fig. 10C) at elevations up to 350 m, in chaco forests on the slopes of low hills, open or shaded weeds on sandy dunes, disturbed urban areas, and roadsides.

Ejemplares de referencia

Colector N° Colect. Especie Departamento Provincia Imagen
  • Fortunato, R. H.
    		• 1592 Copo Santiago del Estero
  • Fortunato, R. H.
    		• 3381 Patiño Formosa
  • Fortunato, R. H.
    		• 4171 Formosa Formosa
  • Fortunato, R. H.
    		• 6639 General Güemes Chaco
  • Hahn, W. J.
    		• 798 Boquerón
  • Hunziker, A. T.
    		• 21578 Banda Santiago del Estero
  • Hunziker, A. T.
    		• 21778 Banda Santiago del Estero
  • Lorentz, P. G.
    		• 45 Santiago del Estero
  • Lorentz, P. G.
    		• 45 Santiago del Estero
  • Lorentz, P. G.
    		• 45 Santiago del Estero
  • Lorentz, P. G.
    		• 45 Santiago del Estero
  • Pensiero, J. F.
    		• 4417 Hernando Siles Chuquisaca
  • Saravia Toledo, C.
    		• 1261 Anta Salta
  • Schreiter, R.
    		• 10956 Dr. Manuel Belgrano Jujuy
  • Sleumer, H. O.
    		• 4024 (SI 207963) Santa Victoria Salta
  • Solís Neffa, V. G.
    		• 667 General José de San Martín Salta
  • Venturi, S.
    		• 654 Leales Tucumán

    Nombre Vulgar y Usos

    Tipo y Observaciones

    Material Tipo: Basónimo: Cleome tucumanensis H.H. Iltis
    Observaciones: Phenology.- Tarenaya tucumanensis is collected with flowers and fruits from January to June, and in October, November, and December. Vernacular names.- Albaca del monte (S. Venturi 654). Discussion.- Tarenaya tucumanensis is commonly confused with the sympatric T. cordobensis (Eichler ex Griseb.) Arana & Oggero. It can be distinguished by its subshrub habit, 0.8–1 m tall (vs. herb, 0.3 m tall), 3- to 5-foliolate leaves (vs. 3-foliolate), unarmed petioles (vs. armed), filaments 20–35 mm long (vs. 13–15 mm long) and anthers 4–5 mm long (vs. 2.5–3 mm long), and capsules on a gynophore 30–40 mm long (vs. 1.2–1.5[–2.5] mm long). Furthermore, T. tucumanensis occurs at lower elevations, between 250 and 350 m, whereas T. cordobensis is distributed in higher elevations up to 2650 m.