Senna spp.

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Genus with around 272 evergreen trees, shrubs and perennials that produce clusters of pea-like, yellow, very occasionally white flowers and alternate, pinnately divided foliage with rounded leaflets. Flower shape and petal number varies across species but colour is uniform, almost always yellow. Species from this genus are found throughout the tropics, with some extending into temperate climates and many subspecies and geographical variants from this genus exist in cultivation.

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