Swainsona oliveri
From Wikipedia, the free encyclopedia
| Swainsona oliveri | |
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Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Genus: | Swainsona |
| Species: | S. oliveri |
| Binomial name | |
| Swainsona oliveri | |
| Synonyms[1] | |
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Swainsona oliveri is a species of flowering plant in the family Fabaceae and is endemic to south-western Australia. It is a slender, prostrate to ascending annual or perennial herb with imparipinnate leaves with 9 to 13 narrowly egg-shaped leaflets, the narrower end towards the base, and racemes of up to 4 cream-coloured to yellow flowers, sometimes with a pink tinge.
Swainsona oliveri is a slender prostrate to ascending annual or perennial herb, that typically grows to a height of about 2–15 cm (0.79–5.91 in) and has radiating stems. The leaves are imparipinnate, mostly 150–350 mm (5.9–13.8 in) long with 9 to 13 egg-shaped leaflets with the narrower end towards the base, the side leaflets 1–7 mm (0.039–0.276 in) long and 1–3 mm (0.039–0.118 in) wide with stipules 1–2 mm (0.039–0.079 in) long at the base of the petioles. The flowers are cream-coloured to yellow, sometimes tinged with pink, arranged in racemes of up to 4 on a peduncle up to 40 mm (1.6 in) long. The sepals are joined at the base to form a tube about 3 mm (0.12 in) long, with lobes shorter than the tube. The standard petal is 3.5–6 mm (0.14–0.24 in) long and 3–5 mm (0.12–0.20 in) wide, the wings 3–6 mm (0.12–0.24 in) long and the keel about 4–6 mm (0.16–0.24 in) long and 1–2 mm (0.039–0.079 in) deep.[2] Flowering occurs from August to September, and the fruit is a narrowly elliptical pod 10–25 mm (0.39–0.98 in) long and 3.5–4 mm (0.14–0.16 in) wide with the remains of the style 1.0–1.25 mm (0.039–0.049 in) long.