Senna barclayana
| Smooth senna | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Caesalpinioideae |
| Genus: | Senna |
| Species: | S. barclayana
|
| Binomial name | |
| Senna barclayana | |
| Synonyms[1] | |
Senna barclayana, commonly known as smooth senna or pepper-leaf senna,[2] is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a herbaceous perennial or subshrub with pinnate leaves with six to ten pairs of lance-shaped or narrowly elliptic leaflets, and yellow flowers in groups of six to ten.
Description
[edit]Senna barclayana is an erect, herbaceous perennial subshrub that typically grows to a height of up to 1.5 m (4 ft 11 in). Its leaves are pinnate, 80–120 mm (3.1–4.7 in) long on a petiole 10–20 mm (0.39–0.79 in) long, with six to ten pairs of lance-shaped or narrowly elliptic leaflets 20–50 mm (0.79–1.97 in) long and 4–9 mm (0.16–0.35 in) wide. There is a sessile gland near the base of the petiole, and a stipule that falls off as the leaf opens. The flowers are yellow and arranged in upper leaf axils in pairs or groups of six to ten on a peduncle 20–35 mm (0.79–1.38 in) long, each flower on a pedicel 12–20 mm (0.47–0.79 in) long. The petals are up to 20 mm (0.79 in) long and there are six fertile stamens and four staminodes, the longest anthers about 3 mm (0.12 in) long. Flowering occurs all year, and the fruit is a cylindrical pod 30–50 mm (1.2–2.0 in) long.[2][3][4]
Taxonomy
[edit]This species was first formally described in 1827 by Robert Sweet who gave it the name Cassia barclayana in his Flora Australasica.[5][6] In 1988, Barbara Rae Randell transferred the species to Senna as Senna barclayana in the Journal of the Adelaide Botanic Garden.[4][7] The specific epithet (barclayana) honours Robert Barclay of Bury-hill (1751–1830).[6][8]
Distribution and habitat
[edit]Senna barclayana grows in open forest southern Queensland and northern New South Wales, but its range is increasing and it is now naturalised in Victoria, South Australia and Western Australia.[2][3][9]
References
[edit]- ^ a b "Senna barclayana". Australian Plant Census. Retrieved 3 June 2023.
- ^ a b c Wiecek, Barbara. "Senna barclayana". Royal Botanic Garden Sydney. Retrieved 3 June 2023.
- ^ a b "Senna barclyana". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 31 May 2023.
- ^ a b Randell, Barbara Rae (1988). "Revision of the Cassiinae in Australia. 1. Senna Miller sect. Chamaefistula (Colladon) Irwin and Barneby". Journal of the Adelaide Botanic Gardens. 11 (1): 34–36. Retrieved 3 June 2023.
- ^ "Cassia barclayana". Australian Plant Name Index. Retrieved 3 June 2023.
- ^ a b Sweet, Robert (1827). Flora Australasica. London: James Ridgway. p. 32. Retrieved 3 June 2023.
- ^ "Senna aciphylla". Australian Plant Name Index. Retrieved 3 June 2023.
- ^ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 143. ISBN 9780958034180.
- ^ Walsh, Neville G.; Stajsic, Val. "Senna barclayana". Royal Botanic Gardens Victoria. Retrieved 3 June 2023.