Cabomba schwartzii is a species of aquatic plant in the family Cabombaceae endemic to North Brazil.
Description Vegetative characteristics Cabomba schwartzii is an aquatic herb.Pellegrini, M.O.O. Cabombaceae in Flora e Funga do Brasil. Jardim Botânico do Rio de Janeiro. Available at:<https://floradobrasil.jbrj.gov.br/FB47484>. consulta.publica.uc.citacao.acesso.em15 Oct. 2024 The length of the stems depends on the water level. The stems have two vascular bundles. The elliptical or orbicular, peltate, petiolate floating leaves are 1.5—3.8 cm long, and 1.0—2.5 cm wide. The adaxial leaf surface is purple. The petiole is 1—3 cm long. Generative characteristics The yellow flowers emerge above the water surface. The 2-3 sepals are 6.0–8.0 mm long, and 2.5–3.0 mm wide. The 2-3 petals are 6.5–8.0 mm long, and 2.5–3.0 mm wide. The androecium consists of 2, 3, 4, 5, or 6 stamens. The gynoecium consists of 1,Endress, P. K., & Doyle, J. A. (2015). Ancestral traits and specializations in the flowers of the basal grade of living angiosperms. Taxon, 64(6), 1093-1116. or 2 carpels. The seeds are 1.5–2.2 mm long, and 1–1.2 mm wide.
Taxonomy Cabomba schwartzii Rataj was published by Karel Rataj in 1977. It was then treated as a synonym of Cabomba aquatica Aubl. by Marian Ørgaard in 1991.Ørgaard, M. (1991). The genus Cabomba (Cabombaceae)–a taxonomic study. Nordic Journal of Botany, 11(2), 179-203.Barbosa, T. D., Trad, R. J., Bajay, M. M., & Amaral, M. C. (2015). Microsatellite markers isolated from Cabomba aquatica sl (Cabombaceae) from an enriched genomic library. Applications in plant sciences, 3(11), 1500076. It was reestablished by Barbosa et al. in 2018.BARBOSA, T. D., TRAD, R. J., BAJAY, M. M., ZUCCHI, M. I., & DO AMARAL, M. D. C. E. (2018). Reestablishment of Cabomba schwartzii (Cabombaceae), an aquatic plant species endemic to the Brazilian Amazon. Phytotaxa, 367(3), 245-255. The type specimen was collected by T. W. Schwartz in Igarapé do Aduja, Rio Itu, Rio Negro, Brazil.Rataj, K. (1977). Uma nova Cabomba do rio Negro, Amazonas, Brasil. Acta Amazonica, 7(1), 143-143.
Ecology Habitat It occurs sympatrically with Cabomba furcata,Barbosa, T. D., Costa, S. M., & Maria Do Carmo, E. (2019). Aquatic and Palustrine Angiosperms of Viruá National Park, Brazilian Amazon—Nymphaeales, Alismatales, Dioscoreales, and Arecales. Harvard papers in botany, 24(2), 103-117. Nymphaea, Utricularia, and Mayaca.Korthaus, E. (1986). Wasserpflanzen aus dem Stromgebiet des Rio Negro. Der Palmengarten, 50(1), 23-25. Pollination Flies and bees visit the flowers of Cabomba schwartzii.
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