Zornia burkartii Vanni, Bonplandia

Zornia burkartii Vanni, Bonplandia 5(20): 175. 1981. Figs 6, S 2 Type: ARGENTINA. Corrientes: Ituzaingó, Playadito, 24 September 1974, A. Krapovickas et al. 26354 (holotype CTES–0000688!). Shrub to ca. 70 cm tall. Stems erect, not branched, glabrous. Leaves with 2 leaflets, petiolate. Leaflets 4–44 × 1–5 mm, linear to orbicular, glabrous. Stipules linear to lanceolate, 5–6 veined. Inflorescences spiciform, terminal, 10 cm long. Bracteoles 10–15 × 5–8 mm, elliptic, 5–8 veined, punctate, glabrous, green. Loment with 4–7 articles; articles 2–3 × 1.5–2 mm, reticulate-veined, bristle-like trichomes 1.5 mm long. Distribution and habitat: Argentina, Bolivia, Brazil, Paraguay. It occurs in Savanna. Conservation Status: Vulnerable (VU). Zornia burkartii occurs in a small AOO as compared to the EOO, which increases its vulnerability (EOO= 1,561,277.527 km ²; AOO= 236.000 km ²). Notes: Zornia burkartii morphologically resembles Zornia reticulata; the distinguishing features between the two species include the position of the spiciform inflorescences (terminal in Z. burkartii vs. axillary in Z. reticulata) and the stem characteristics (erect, not branched in Z. burkartii vs. erect to prostrate, branched in Z. reticulata). Representative specimens examined: ARGENTINA. Corrientes: Dep. Santo Tomé, 12 December 1984, S.G. Tressens et al. 2831 (CTES); Misiones: Dep. Apostoles, 22 January 1983, E.R. Guaglianone et al.s.n. (CTES). BRAZIL. Mato Grosso do Sul: Amambaí, 14 October 1984, G. Hatschbach & R. Kummrow 48408 (Z); Minas Gerais: s.loc., 1816, A. Saint – Hilaire 97 (P); Paraná: Porto Amazonas, 17 December 1929, Gurgel 24 (RB); Rio Grande do Sul: São Jerônimo, 4 October 1978, J.Mattos et al.20184 (RB); Santa Catarina: Abelardo Luz, 15 November 1964, L.B. Smith & R.M.Klein 13334 (PAMG); São Paulo: São José dos Campos, 24 November 1961, I. Mimura 106 (K). PARAGUAY. s.loc., 14 September 1874, B. Balansa 1849 (P).