Daviesia smithiorum is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an erect, glabrous, spindly shrub with scattered tapering, needle-shaped phyllodes and yellow-orange and red flowers.
Daviesia smithiorum is an erect, spindly, glabrous and glaucous shrub that typically grows to a height of up to . Its phyllodes are scattered, tapering needle-shaped and sharply pointed with a hooked tip, long and wide at the base. The flowers are arranged in a group of two to four in leaf axils on a peduncle about long, the rachis less than long, each flower on a pedicel long. The sepals are about long and joined at the base, the lobes triangular and about long. The standard petal is broadly elliptic with a notched centre, about long, wide, and yellow-orange with red markings. The wings and keel are about long. Flowering occurs in June and the fruit is a flattened, triangular pod long.[1]
Daviesia smithiorum was first formally described in 1995 by Michael Crisp in Australian Systematic Botany from specimens collected in 1987 by Basil Smith of Manmanning in the Dowerin-Wyalkatchem area.[2] The specific epithet (smithiorum) honours Basil and Mary Smith of Manmanning.[3]
This daviesia grows in heath in the Dowerin-Wyalkatchem in the Avon Wheatbelt biogeographic region of south-western Western Australia.
Daviesia smithiorum is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.