Dillwynia sieberi

Dillwynia sieberi is an erect shrub that typically grows to a height of 1–2 m (3 ft 3 in – 6 ft 7 in) with flattened hairs on the stems. The leaves are linear, needle-shaped and sharply-pointed, 7–20 mm (0.28–0.79 in) long and less than 1 mm (0.039 in) wide. The flowers are arranged in racemes in up to ten leaf axils near the ends of branchlets, each flower on a pedicel about 3 mm (0.12 in) long. There are bracts and bracteoles about 1 mm (0.039 in) long. The sepals are 3–5 mm (0.12–0.20 in) long and joined at the base, the upper lobes joined in a broad "lip". The flowers are yellow to yellow-orange with reddish-brown markings, the standard petal 5.5–9 mm (0.22–0.35 in) long. The wings are 5–9.2 mm (0.20–0.36 in) long and the keel 4.5–6 mm (0.18–0.24 in) long. Flowering occurs from April to November and the fruit is an oval pod 5–6 mm (0.20–0.24 in) long with the remains of the petals attached.[2][3]

Dillwynia sieberi was first formally described in 1840 by Ernst Gottlieb von Steudel in his book Nomenclator Botanicus.[4][5] The specific epithet (sieberi) honours Franz Sieber.[6]

Sieber's parrot-pea grows in forest and woodland and is widespread along the ranges and western slopes of New South Wales and the Australian Capital Territory, and in coastal areas between Newcastle and Nowra. It also occurs in south-eastern Queensland and a few places in south-eastern Victoria.[2][3]