About Senna glutinosa (DC.) Randell
Senna glutinosa (DC.) Randell is an erect or straggling shrub or small tree, more or less hairless, that typically reaches 0.3–4 m (1 ft 0 in – 13 ft 1 in) in height. Its stems, leaves, and outer flower structures are sticky. The leaves are pinnate, with up to seven pairs of leaflets spaced more than 6 mm (0.24 in) apart, growing on a petiole longer than 6 mm (0.24 in). Leaflet size and shape vary by subspecies. This species produces yellow flowers clustered near the ends of branches. Its sepals are oval, greenish-yellow, and 8–10 mm (0.31–0.39 in) long. The petals are oval, 11–15 mm (0.43–0.59 in) long. Each flower has ten fertile stamens, with anthers 4–5 mm (0.16–0.20 in) long. The fruit is a flat pod 50–70 mm (2.0–2.8 in) long and 10–20 mm (0.39–0.79 in) wide. Senna glutinosa grows in arid shrubland across all mainland Australian states and the Northern Territory, with the exception of Victoria. The different subspecies have distinct ranges: subspecies chatelainiana grows in central west Western Australia; subspecies glutinosa occurs from north-west Western Australia through the Northern Territory to north-western South Australia; subspecies × luerssenii grows from the central coast of Western Australia to near the Northern Territory border; and subspecies pruinosa is found from north-western Western Australia to far northern South Australia, far western Queensland, and far western New South Wales.
