Dillwynia tenuifolia

Dillwynia tenuifolia Sieber ex DC. (Fabaceae) is an erect, much-branched shrub endemic to southeastern Australia, particularly the Cumberland Plain woodlands of western Sydney and adjacent inland areas of New South Wales, where it grows in well-drained sandy or clayey soils over shale and ironstone. Plants reach 0.3–1.5 m tall, with slender, finely pubescent green stems. Leaves are alternate, simple, needle-like and terete, 5–15 mm long and less than 1 mm wide, with a fine apical point and a shallow groove on the upper surface. The pea-flowers are produced in dense terminal clusters in spring; each flower is about 8–10 mm wide with a bright yellow to orange-yellow standard marked with red, wing petals yellow, and a yellow to red keel. The fruit is a small, ovoid, hairy pod 4–6 mm long enclosing one or two seeds. The species is classified as vulnerable.