Zornia trachycarpa Vogel, Linnaea

Zornia trachycarpa Vogel, Linnaea View in CoL 12: 60. 1838. Zornia diphylla var. trachycarpa (Vogel) Benth., Fl. Bras. (Martius) View in CoL 15(1): 82. 1859.

Fig. 13 View Figure 13 , S 2 View Figure 2

Type: BRAZIL . ‘‘In Brasil. Merid. ’’, s.d., F. Sellow s.n. (holotype K–000328081!). Zornia linearifoliolata N.F.Mattos, Loefgrenia View in CoL 90:1. 1986 . Type: BRAZIL . Rio Grande do Sul: Viamao , 22 February 1984, S.T.S. Miotto, M. Sobral & J. Waechter 938 (holotype ICN) .

Shrub to ca. 80 cm tall. Stems erect, branched, glabrous. Leaves with 2 leaflets, petiolate. Leaflets 12–66 × 0.5–8 mm, linear to lanceolate, glabrous. Stipules elliptic to lanceolate, 5–8 veined. Inflorescences spiciform, axillary, 40 cm long. Bracteoles 5–16 × 2–5 mm, elliptic to lanceolate, 5–7 veined, punctate, glabrous, green. Loment with 3–8 articles; articles 2–3 × 1.5–2 mm, reticulate-veined, bristle-like trichomes 3.5 mm long.

Distribution and habitat: Argentina, Brazil, Paraguay, Uruguay. It occurs in the Savanna.

Conservation Status: Vulnerable (VU). Zornia trachycarpa has a limited AOO of 132.000 km ² within its overall range (EOO= 968,364.473 km ²; AOO= 132.000 km ²).

Notes: Zornia trachycarpa is distinguished from the other bifoliate species of the genus by its loment trichomes 3.5 mm long.

Representative specimen examined: ARGENTINA. Chaco: colônia Vanguardia , May 1876, M. Calot 56 (P) . BRAZIL. Rio Grande do Sul: Porto Alegre, 1833, C. Gaudichaud 1484 (P) . PARAGUAY. Cordillera de Altos: s.loc., November 1902, K. Fiebrig 401 (K) . URUGUAY. s.loc., 1816, A. Saint-Hilaire 2371 (P).