Agonis

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Agonis
Agonis flexuosa.jpg
Flowers of Agonis flexuosa
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Subfamily: Myrtoideae
Tribe: Leptospermeae
Genus: Agonis
(DC.) Sweet [1]
Synonyms [1]

Agonis is a genus of flowering plants in the plant family Myrtaceae. All are endemic to Western Australia, growing near the coast in the south west. Plants in the genus Agonis are shrubs or trees with bisexual flowers arranged in heads in leaf axils with 5 sepals and usually 5 white petals, each with 15 to 30 stamens arranged opposite the sepals, and the fruit a woody capsule.

Contents

Description

Plants in the genus Agonis are shrubs or trees, the leaves simple with small glands. The flowers are bisexual with a pair of bracteoles and a bract at the base. The flowers have a leathery floral tube, 5 egg-shaped or triangular sepals, 5 white petals and 15 to 30 stamens in a single whorl with 6 or 7 stamens opposite the sepals and none opposite the petals. The ovary is inferior with the style in a depression at the top of the ovary, and the fruit is a woody capsule with winged seeds. [2] [3]

Taxonomy

This genus was first formally described in 1828 by Augustin Pyramus de Candolle as Leptospermum sect. Agonis in his Prodromus Systematis Naturalis Regni Vegetabilis . [4] [5] In 1830, Robert Sweet raised the genus Agonis based on de Candolle's section Agonis, in Sweet's Hortus Britannicus. [6] [7]

Species list

The following is a list of Agonis species accepted by Plants of the World Online as at August 2024: [1]

Related Research Articles

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<i>Baeckea brevifolia</i> Species of flowering plant

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<i>Darwinia diosmoides</i> Species of flowering plant

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<i>Beaufortia sprengelioides</i> Species of flowering plant

Beaufortia sprengelioides is a species of flowering plant in the myrtle family, Myrtaceae and is endemic to the southwest of Western Australia. It is a rigid, spreading shrub with crowded, round leaves and small, roughly spherical heads of pale pink flowers on the ends of its branches. It was one of the first Australian plant species collected by Europeans and has had several name changes since then.

<i>Taxandria linearifolia</i> Species of tree

Taxandria linearifolia, also known as the swamp peppermint or the coarse teatree, is a small tree or shrub species that grows along south west coastal areas of Western Australia. This plant was previously classified as Agonis linearifolia but is now part of the Taxandria genus.

<i>Calytrix decandra</i> Species of flowering plant

Calytrix decandra, commonly known as pink starflower, is a species of flowering plant in the myrtle family Myrtaceae and is endemic to the south of Western Australia. It is a semi-prostrate, glabrous shrub with linear to narrowly elliptic leaves and pink, mauve or magenta flowers with usually 10 stamens in a single row.

<i>Calytrix exstipulata</i> Species of flowering plant

Calytrix exstipulata, commonly known as turkey bush, Kimberley heather, heather bush or pink fringe-myrtle, is a species of flowering plant in the myrtle family Myrtaceae and is endemic to northern Australia. It is an erect shrub with narrowly egg-shaped to elliptic leaves and clusters of dark red, pink and white flowers with mainly pink stamens.

<i>Tremandra</i> Genus of flowering plants

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<i>Leptospermum myrtifolium</i> Australian species of plant

Leptospermum myrtifolium, commonly known as the myrtle tea-tree or grey tea-tree, is a species of shrub that is endemic to south eastern Australia. It has broad egg-shaped to elliptical leaves, white flowers usually borne singly on short side shoots, and fruit that remains on the plant until it dies.

Teucrium sessiliflorum, commonly known as camel bush, is a species of flowering plant in the family Lamiaceae and is endemic to southern continental Australia. It is a tufted perennial herb with hairy, egg-shaped, lobed leaves and white or cream-coloured flowers.

<i>Pultenaea echinula</i> Species of flowering plant

Pultenaea echinula, commonly known as curved bush-pea, is a species of flowering plant in the family Fabaceae and is endemic to a small area of New South Wales. It is an erect shrub with linear, needle-shaped, grooved leaves, and dense clusters of yellow to orange and red flowers.

<i>Pultenaea euchila</i> Species of flowering plant

Pultenaea euchila, commonly known as orange pultenaea, is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is an erect shrub with glabrous foliage, narrow egg-shaped leaves with the narrower end towards the base, and orange-coloured flowers arranged singly or in small groups near the ends of branchlets.

<i>Pultenaea spinosa</i> Species of plant

Pultenaea spinosa, commonly known as grey bush-pea or spiny bush-pea, is a species of flowering plant in the family Fabaceae and is endemic to south-eastern continental Australia. It is a low-lying to erect shrub with glabrous stems, egg-shaped to rhombic leaves, and yellow-orange and red, pea-like flowers.

<i>Bauera capitata</i> Species of flowering plant

Bauera capitata is a species of flowering plant in the family Cunoniaceae and is endemic to coastal eastern Australia. It is a small shrub with trifoliate, usually lobed leaves and sessile, deep pink flowers with twelve to fifteen stamens.

<i>Leucopogon capitellatus</i> Species of plant

Leucopogon capitellatus is a species of flowering plant in the heath family Ericaceae and is endemic to the south-west of Western Australia. It is an erect, more or less glabrous shrub that typically grows to a height of 0.2–1 m. It has linear to lance-shaped leaves longer than about 12 mm (0.47 in) long, tapering to a rigid point on the tip. The flowers are borne on short spikes on the ends of branches or in leaf axils on short side branches, with small bracts and bracteoles about half as long as the sepals. The sepals are broad, about 2 mm (0.079 in) long and the petals white and about 4 mm (0.16 in) long, the petal lobes longer than the petal tube.

<i>Styphelia cymbiformis</i> Species of shrub

Styphelia cymbiformis is a flowering plant in the family Ericaceae and is endemic to the south-west of Western Australia. It is a bushy or wiry shrub that typically grows to a height of 30–50 cm (12–20 in) and has more or less glabrous branches. Its leaves are erect, linear to lance-shaped and sharply-pointed, mostly 2–4 mm (0.079–0.157 in) long. The flowers are arranged in short spikes, sometimes of only two or three flowers, with lance-shaped, leaf-like bracts, and bracteoles half as long as the sepals at the base of the spikes. The sepals are 2.5–3.0 mm (0.098–0.118 in) long and the petals slightly longer than the sepals, the lobes shorter than the petal tube.

<i>Leucopogon pimeleoides</i> Species of plant

Leucopogon pimeleoides is a species of flowering plant in the heath family Ericaceae and is endemic to eastern Australia. It is a shrub with narrowly egg-shaped leaves and spikes of white, bearded flowers.

<i>Styphelia angustifolia</i> Species of plant

Styphelia angustifolia is a species of flowering plant in the heath family Ericaceae and is endemic to eastern New South Wales. It is an erect shrub with lance-shaped to narrowly egg-shaped leaves and pale green, pendent flowers in summer.

References

  1. 1 2 3 "Agonis". Plants of the World Online. Retrieved 3 August 2024.
  2. Wheeler, Judith R.; Marchant, Neville G. (2007). "A revision of the Western Australian genus Agonis (Myrtaceae) and two new segregate genera Taxandria and Paragonis". Nuytsia. 16 (2): 397. Retrieved 3 August 2024.
  3. "Agonis". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. "Leptospermum sect. Agonis". Australian Plant Name Index. Retrieved 3 August 2024.
  5. de Candolle, Augustin P. (1828). Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta. Paris: Sumptibus Sociorum Treuttel et Würtz. pp. 226–227. Retrieved 3 August 2024.
  6. "Agonis". Australian Plant Name Index. Retrieved 3 August 2024.
  7. Sweet, Robert (1830). Sweet's Hortus britannicus; or, A catalogue of all the plants indigenous or cultivated in the gardens of Great Britain. London: James Ridgway. pp. 209–210. Retrieved 3 August 2024.