Senna hirsuta
From Wikipedia, the free encyclopedia
| Senna hirsuta | |
|---|---|
_H.S.Irwin_&_Barneby_(39968456951).jpg) | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Caesalpinioideae |
| Genus: | Senna |
| Species: | S. hirsuta |
| Binomial name | |
| Senna hirsuta | |
| Synonyms[1] | |
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Senna hirsuta, commonly known as woolly senna,[2] is a species of flowering plant in the family Fabaceae and is native to Central and South America, but is naturalised in many other countries. It is an erect or spreading shrub or herbaceous perennial with pinnate leaves, with two to six pairs of egg-shaped leaflets, and yellow flowers arranged in groups of two to six, with six fertile stamens and four staminodes in each flower.
Senna hirsuta is an erect or spreading shrub or herbaceous perennial that typically grows to a height of up to 2.5 m (8 ft 2 in). Its leaves are pinnate, 100–160 mm (3.9–6.3 in) long on a petiole 40–65 mm (1.6–2.6 in) long, usually with two to six pairs of egg-shaped leaflets, sometimes with the narrower end towards the base. The leaflets are 40–90 mm (1.6–3.5 in) long and 20–35 mm (0.79–1.38 in) wide, usually spaced 20–40 mm (0.79–1.57 in) apart. There is a sessile gland at the base of the petiole. The flowers are yellow and arranged on the ends of branches and in upper leaf axils in groups of two to five on a peduncle about 10 mm (0.39 in) long, each flower on a pedicel 12–20 mm (0.47–0.79 in) long. The petals are 12–16 mm (0.47–0.63 in) long and there are six fertile stamens, the anthers 3–8 mm (0.12–0.31 in) long and of different lengths, as well as four staminodes. Flowering occurs in most months, and the fruit is a flattened cylindrical pod 100–140 mm (3.9–5.5 in) long, 4–6 mm (0.16–0.24 in) wide and curved.[2][3]