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Senna italica
''Senna italica'', the Port Royal senna, Italian senna, or Senegal senna is a legume tree in the genus ''Senna''. It is recognized by many other common names based on the regions it grows in. In India, it is used to produce a powder used to treat hair which is known as “neutral henna”. Senegal senna is easily distinguishable through its many distinctive features. There are 3 subspecies of this plant based on the size of the inflorescence and the length of the petiole. The subspecies are ''italica'', ''micrantha'', and ''arachoides''. In many regions, this plant is cultivated commercially and medicinally.
==Description==
Individuals of this species are deciduous, perennial herbs, and shrubs up to 60 cm tall. The plant is woody throughout. Taproots are present in this plant. Stems are solid, usually less than 2 m tall. These stems or young twigs are glabrous or sparsely glabrous and sparsely to densely hairy. This species has compound leaves with pinnate veination. There are approximately 4-6 leaflets per leaf, which are arranged spirally and alternately. The leaflets are elliptical, and shortly hairy on both sides. There is a small reddish gland between each leaflet pair on the rhachis of ''arachoides'' subspecies. The stipules are usually have lanceolate-triangular shape. They are approximately 3–9 mm long and early spreading –deflexed.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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