Calocephalus knappii

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Calocephalus knappii
Calocephalus knappii flowers.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Calocephalus
Species:
C. knappii
Binomial name
Calocephalus knappii
Habit Calocephalus knappii habitus.jpg
Habit

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.

Contents

Description

Calocephalus knappii is an annual herb with decumbent or upright habit with branches about 3–30 cm (1.2–11.8 in) long. The leaves are arranged alternate, oval to lance-shaped or linear to elliptic, 0.5–3.2 cm (0.20–1.26 in) long, spreading to pressed against the stem, 0.25–0.6 cm (0.098–0.236 in) wide, occasional to thickly hairy and a prominent mid vein. The flower heads are oblong, rounded, globular or ovoid, about 0.6–1.6 cm (0.24–0.63 in) in diameter, orange or yellowish brown, each head has about 20-70 florets, outer bracts mostly green, opaque and the corolla tube 1.6–2.4 mm (0.063–0.094 in) long. Flowering occurs from July to October and the fruit is an achene about 0.5 mm (0.020 in) long, about 0.3 mm (0.012 in) in diameter, brown and bristly. [2] [3]

Taxonomy and naming

Calcephalus knappii was first formally described in 1910 by Ewart & Jean White from an unpublished description by Ferdinand von Mueller and the description was published in Proceedings of the Royal Society of Victoria . [4] [5] The specific epithet (knappii) is in honour of Austrian botanist Joseph Armin Knapp. [6]

Distribution and habitat

This species grows in South Australia, Western Australia, Queensland and the Northern Territory on sand, sandy clay and near drainage channels. [2] [3]

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References

  1. "Calocephalus knappii". Australian Plant Census. Retrieved 24 March 2024.
  2. 1 2 "Calocephalus knappii". eFloraSA-Electronic Flora of South Australia. State Herbarium of South Australia. Retrieved 26 March 2024.
  3. 1 2 Spooner, Amanda. "Calocephalu knappii". Florabase- the Flora of Western Australia. Department of Biodiversity, Conservation and Attractions. Retrieved 26 March 2024.
  4. "Calocephalus knappii". Australian Plant Name Index. Retrieved 28 March 2024.
  5. Ewart, Alfred; White, Jean (1910). "Calocephalus knappii". Proceedings of the Royal Society of Victoria. 22: 319. Retrieved 28 March 2024.
  6. George, A.S; Sharr, F.A (2021). Western Australian Plant Names and their meanings (4th ed.). Kardinya: Four Gables. p. 319. ISBN   9780958034197.