Zornia multinervosa Burkart ex Bacigalupo, Darwiniana

Zeferino, Laís Couto, Lewis, Gwilym Peter, Pezzini, Flávia Fonseca & Fortuna-Perez, Ana Paula, 2025, A taxonomic synopsis of the genus Zornia J. F. Gmel. (Leguminosae: Papilionoideae) for the Neotropics, Acta Botanica Brasilica (e 20240197) 39, pp. 1-37 : 26-28

Zornia multinervosa Burkart ex Bacigalupo, Darwiniana 21 (1): 174. 1977.

Figs 9F, S 4

Type: ARGENTINA. Entre Ríos: Federación, Burkart 30855 (holotype SI–I019205 !, isotype CTES–0000690 !) .

Zornia reticulata Sm. var. neurada Vogel, Linnaea 12: 58. 1838. Type: BRAZIL. F. Sellow s.n. (holotype K).

Shrub to ca. 20 cm tall. Stems decumbent, branched, glabrous. Leaves with 2 leaflets, petiolate. Leaflets 2–30 × 2–5 mm, ovate to lanceolate, glabrous. Stipules obovate to lanceolate, 5–7 veined. Inflorescences spiciform, axillary, 25 cm long. Bracteoles 7–11 × 2–5 mm, ovate, 8–9 veined, punctate, glabrous, green. Loment with 4–6 articles; articles 2–3 × 2–2.5 mm, not reticulate-veined, bristle-like trichomes 1 mm long.

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

Conservation Status: Vulnerable (VU). The species has an AOO of only 104,000 km ² and an EOO of 373,332.111 km ².

Notes: Zornia multinervosa differs from the other species in the genus by its obovate stipules, each with 5–7 veins, and its ovate bracteoles with 8–9 veined.

Representative specimen examined: ARGENTINA. Corrientes: Dep. Mercedes, 21 February 1984, S.G. Tressens et al. 2268 (K). BRAZIL. Rio Grande do Sul: Porto Alegre, 1897, Reineck & Czermak 94 (K, M, P). PARAGUAY. Carapegna: s.loc., 1885–95, E. Hassler 1221 (P).

Figures

Figure 4. Neotropical Zornia fruit morphology showing variation in the loment. It shows the article indumentum and presence or absence of bristle-like trichomes. A. Z. subsessilis B. Z. sericea C. Z. myriadena D. Z. ulei E. Z. bracteata. (Photos A: T.C. Monteiro; B: T.M. de Lima C, D: R.T. Queiroz; E: N. Frade).

Figure 9. Zornia species. A. Z.harmsiana B. Z. reticulata C. Z. latifolia D. Z. hebecarpa E. Z. virgata F. Z.multinervosa (Photos A, B, D, E: R.T. Queiroz; C, F: T.C. Monteiro).