Senna occidentalis ( Linnaeus 1753: 377 ) Link (1831: 140)

Rauber, Cristiane Ritter, Lima, Laura Cristina Pires, Caxambu, Marcelo Galeazzi & Temponi, Lívia Godinho, 2021, Synopsis of Leguminosae from Iguaçu National Park, Paraná, Brazil, Phytotaxa 501 (2), pp. 245-280 : 272-273

65. Senna occidentalis ( Linnaeus 1753: 377) Link (1831: 140) . ( Fig. 8I and J )

Distribution: It occurs from Mexico to Argentina ( Irwin & Barneby 1982); in Brazil it occurs throughout the country ( Flora do Brasil 2020). In ParNa Iguaçu it occurs in the Céu Azul area.

Reproductive period: According to Queiroz (2009) it flowers and fruits the whole year. In ParNa Iguaçu it was found in flower in January and February, in fruit in February.

Diagnostic characteristics: Species with pinnate leaves commonly confused with S. obtusifolia , however it can be differentiated by the 2–3 pairs of obovate leaflets with a rounded apex in S. obtusifolia vs. 4–6 pairs of elliptical leaflets with an acuminate apex in S. occidentalis .

Conservation: Native-NE.

Selected examined material: BRAZIL. Paraná: Area 1, Céu Azul , 30 January 2019, (fl.), C.R. Rauber et al. 324 ( EVB, UNOP) .

Figures

FIGURE 8. A and B: Senegalia polyphylla: A. branch with inflorescence; B. nectary; C: Senegalia tucumanensis, inflorescence; D: Senegalia velutina, inflorescence; E and F: Senna macranthera: E: branch with inflorescence; F: flower; G and H: Senna obtusifolia: G: branch with inflorescence; H: flower; I and J: Senna occidentalis: I: branch with inflorescence; J: flower; K and L: Sesbania virgata: K. flowers; L: branch with fruit. (A–J; L Rauber CR 2018; K Wink, JG 2019)