Sesbania is a genus of flowering plants in the pea family, Fabaceae, and the only genus found in tribe Sesbanieae. Riverhemp is a common name for plants in this genus. Notable species include the rattlebox (Sesbania punicea), spiny sesbania (Sesbania bispinosa), and Sesbania sesban, which is used in cooking. Plants of this genus, some of which are aquatic, can be used in alley cropping to increase the soil's nitrogen content. The species of rhizobia responsible for nitrogen fixation in Sesbania rostrata is Azorhizobium caulinodans. Some 60 species are currently accepted, with about 39 still unresolved. The largest number of species are found in Africa, and the remainder in Australia, Hawaii, and Asia. Fossil record Fossil seed pods from the upper Oligocene resembling Sesbania have been found in the Hungarian locality of Eger Wind-brickyard. The fossil species grew in a swampy and riparian environment. List of species Sesbania benthamiana Sesbania bispinosa (Jacq.) W.Wight Sesbania brachycarpa Sesbania brevipedunculata Sesbania campylocarpa Sesbania cannabina Poir. Sesbania chippendalei Sesbania cinerascens Sesbania coerulescens Sesbania concolor Sesbania dalzielii Sesbania drummondii (Rydb.) Cory Sesbania dummeri Sesbania emerus (Aubl.) Urban – coffeebean Sesbania erubescens Sesbania exasperata Sesbania formosa Sesbania goetzei Sesbania grandiflora (L.) Poir. Sesbania greenwayi Sesbania hepperi Sesbania herbacea (Mill.) McVaugh – bigpod sesbania Sesbania hirtistyla Sesbania hobdyi Sesbania javanica Sesbania keniensis Sesbania leptocarpa Sesbania longifolia Sesbania macowaniana Sesbania macrantha Sesbania macroptera Sesbania madagascariensis Sesbania microphylla Sesbania notialis Sesbania oligosperma Sesbania pachycarpa Sesbania paucisemina Sesbania punicea (Cav.) Benth. – rattlebox Sesbania quadrata Sesbania rostrata Sesbania sericea (Willd.) Link – papagayo Sesbania sesban (Jacq.) W.Wight – Egyptian riverhemp Sesbania simpliciuscula Sesbania somaliensis Sesbania speciosa Sesbania sphaerosperma Sesbania subalata Sesbania sudanica Sesbania tetraptera Sesbania tomentosa Hook. & Arn. – Ōhai (Hawaii) Sesbania transvaalensis J.B.Gillett Sesbania vesicaria (Jacq.) Elliott Sesbania virgata'' (Cav.) Pers. – wand riverhemp References External links Faboideae Tropical agriculture Fabaceae genera