Zornia burkartii Vanni, Bonplandia

Zornia burkartii Vanni, Bonplandia View in CoL 5(20): 175. 1981.

Figs 6 View Figure 6 , S 2 View Figure 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) .