Leptorhynchos tenuifolius, commonly known as wiry buttons, is a species of flowering plant in the family Asteraceae. It is an upright to ascending herb, multi-branched and has yellow flowers and grows in Victoria and South Australia.
Leptorhynchos tenuifolius is a multi-stemmed upright to ascending multi-branched perennial, covered with soft hairs to smooth and high. Leaves are narrow, linear-shaped, pointed, margins recurved, long, wide, basal leaves longer and wider. The flower heads are oblong-cone shaped, about in diameter, outer involucral bracts clear with a brown tip, margins densely covered with spreading, soft hairs and the florets yellow. Flowering occurs from October to March and the fruit is a cypsela about long and smooth.
Leptorhynchos tenuifolius was first formally described in 1858 by Ferdinand von Mueller and the description was published in Fragmenta Phytographiae Australiae. The specific epithet (tenuifolius) means "slender leaved".
Wiry buttons is a locally common species growing in a variety of situations including woodlands, forest and wet areas on sandy soils in Victoria and South Australia.