About Daviesia corymbosa Sm.
Daviesia corymbosa grows as an open shrub, reaching up to 2 m (6.6 ft) tall. Like other species in the pea family, this plant has phyllodes instead of true leaves. These structures vary in shape, ranging from obovate (egg-shaped) or oval to linear. They are 2–12 cm (1–4.5 in) long and 0.2–2.5 cm (0.079–0.984 in) wide, green in colour, and marked with a prominent network of veins. Flowers, which range in colour from yellow to red, bloom from August to December, peaking in spring during September and October. The flowers are arranged in groups of 5 to 20 in umbelliform or corymbose racemes. The plant's seed pods ripen in November and December. This species can be distinguished from other bitter pea species by its corymbose flowerheads. Additionally, its green phyllodes contrast with the pale grey-green phyllodes of D. laevis and D. latifolia. Daviesia corymbosa is endemic to New South Wales. It grows on sandstone soils east of the Great Dividing Range, from Myall Lakes to Green Cape. Its natural habitat is dry sclerophyll forest or heath. Common associated species include red bloodwood (Corymbia gummifera), yellow bloodwood (C. eximia), narrow-leaved apple (Angophora bakeri), smooth-barked apple (A. costata), and silvertop ash (Eucalyptus sieberi); watergum (Tristaniopsis laurina) and scrub beefwood (Stenocarpus salignus are associated species along creeks. In terms of ecology, Daviesia corymbosa regenerates after bushfire by resprouting. It acts as a host plant for the jewel beetle species Ethonion jessicae, whose larvae live in galls on the plant's stems. Peas of the genus Daviesia are only rarely grown in cultivation. When in flower, D. corymbosa is a showy plant. It can grow in well-drained soils, planted in positions with full sun or dappled shade, and can be propagated from seed or cuttings.
