Calocephalus knappii, is a species of flowering plant in the family Asteraceae. It is a small annual herb with yellow globular-shape flowers upright to decumbent branches and is endemic to Australia.
Calocephalus knappii is an annual herb with decumbent or upright habit with branches about long. The leaves are arranged alternate, oval to lance-shaped or linear to elliptic, long, spreading to pressed against the stem, wide, occasional to thickly hairy and a prominent mid vein. The flower heads are oblong, rounded, globular or ovoid, about in diameter, orange or yellowish brown, each head has about 20-70 florets, outer bracts mostly green, opaque and the corolla tube long. Flowering occurs from July to October and the fruit is an achene about long, about in diameter, brown and bristly.[1] [2]
Calcephalus knappii was first formally described in 1910 by Ewart & Jean White from an unpublished description by Ferdinand von Mueller and the description was published in Proceedings of the Royal Society of Victoria.[3] [4] The specific epithet (knappii) is in honour of Austrian botanist Joseph Armin Knapp.[5]
This species grows in South Australia, Western Australia, Queensland and the Northern Territory on sand, sandy clay and near drainage channels.[1] [2]