Boronia laxa

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Boronia laxa
Boronia laxa.jpg
B. laxa in Kakadu National Park
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Rutaceae
Genus: Boronia
Species:
B. laxa
Binomial name
Boronia laxa

Boronia laxa is a plant in the citrus family Rutaceae and is endemic to a small area in the Northern Territory, Australia. It is a low-lying, short-lived shrub with hairy branches, leaves and flower parts, simple leaves and white to mauve flowers with the sepals longer and wider than the petals.

Contents

Description

Boronia laxa is a semi-prostrate, short-lived shrub that typically grows to about 50 cm (20 in) high and 1.5 m (5 ft) wide with many branches. Its branches, leaves and some flower parts are covered with star-like hairs. The leaves are arranged in opposite pairs, simple, elliptic, 10–45 mm (0.39–1.8 in) long and 2.5–10 mm (0.1–0.4 in) wide on a petiole 0.5–3 mm (0.02–0.1 in) long. The flowers are white to pink or mauve on a pedicel 0.5–2.5 mm (0.02–0.1 in) long. The sepals are lance-shaped to egg-shaped, 4–6 mm (0.16–0.24 in) long and 2–3 mm (0.08–0.1 in) wide and the petals are 2.5–4.5 mm (0.098–0.18 in) long and 1–2 mm (0.04–0.08 in) wide. The sepals and petals enlarge as the fruit develops. Flowering occurs mainly from January to June. [2] [3]

Taxonomy and naming

Boronia laxa was first formally described in 1997 by Marco F. Duretto who published the description in Australian Systematic Botany . [4] The specific epithet (laxa) is a Latin word meaning "loose", "slack" or "unstrung". [5]

Distribution and habitat

Boronia laxa grows in sandstone heath and woodland on Mount Brockman in Kakadu National Park and on the nearby Arnhem Plateau. [2] [3]

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<i>Cyanothamnus nanus</i> Species of plant

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<i>Boronia barkeriana</i> Species of flowering plant

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<i>Boronia grandisepala</i> Species of flowering plant

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<i>Boronia jucunda</i> Species of flowering plant

Boronia jucunda is a plant in the citrus family Rutaceae and is endemic to the far north-west of Australia. It is an erect shrub with many branches, pinnate leaves and white, four-petalled flowers. It is only known from a small area in the Kimberley region in Western Australia and in a national park in the Northern Territory.

<i>Boronia lanceolata</i> Species of flowering plant

Boronia lanceolata is a plant in the citrus family Rutaceae and is endemic to northern parts of the Northern Territory and Queensland. It is an erect shrub with many branches, elliptic to lance-shaped leaves and white or pink, four-petalled flowers. It is the most common boronia in the Northern Territory.

<i>Boronia ternata</i> Species of flowering plant

Boronia ternata is a plant in the citrus family Rutaceae and is endemic to the south-west of Western Australia. It is an erect shrub with many branches, simple or trifoliate leaves and white to pink four-petalled flowers.

Boronia amplectens is a plant in the citrus family Rutaceae and is only known from two specimens collected from the Arnhem Land plateau in the Northern Territory of Australia. It is a sprawling shrub with narrow elliptic leaves and four-petalled flowers.

<i>Boronia angustisepala</i> Species of flowering plant

Boronia angustisepala is a plant in the citrus family Rutaceae and is endemic to New South Wales, Australia. It is an erect shrub with many branches, pinnate leaves with up to eleven leaflets, and bright pink, four-petalled flowers.

<i>Boronia decumbens</i> Species of flowering plant

Boronia decumbens is a plant in the citrus family Rutaceae and is endemic to northern parts of the Northern Territory. It is a low, spreading shrub with pinnate leaves and white to pink flowers with the four sepals larger than the four petals.

<i>Boronia jensziae</i> Species of plant in the citrus family

Boronia jensziae, commonly known as Andy Jensz's boronia or Hinchinbrook boronia, is a plant in the citrus family Rutaceae and is endemic to Hinchinbrook Island in Queensland. It is an erect, densely branched shrub with simple leaves and pink to white, four-petalled flowers usually arranged singly in leaf axils.

<i>Boronia palasepala</i> Species of flowering plant

Boronia palasepala is a plant in the citrus family Rutaceae and is endemic to a small part of Queensland, Australia. It is an erect, rounded shrub with many branches, simple leaves and pink to white, four-petalled flowers.

<i>Boronia prolixa</i> Species of flowering plant

Boronia prolixa is a species of plant in the citrus family Rutaceae and is endemic to a small area in the Northern Territory, Australia. It is a low-lying shrub with hairy branches, leaves and flower parts, simple leaves and white to pink flowers with the sepals longer and wider than the petals.

Boronia quadrilata is a species of plant in the citrus family Rutaceae and is endemic to a small area in the Northern Territory, Australia. It is an erect, glabrous shrub with simple, sessile, wedge-shaped leaves, pale yellow petals and green sepals that are longer and wider than the petals. It is only known from a population of about fifteen plants.

<i>Boronia rupicola</i> Species of flowering plant

Boronia rupicola is a species of plant in the citrus family Rutaceae and is endemic to a small area in the Northern Territory, Australia. It is a small shrub with weeping branches, simple or pinnate leaves and small, green, inconspicuous flowers.

<i>Boronia splendida</i> Species of flowering plant

Boronia splendida is a species of plant in the citrus family, Rutaceae, and is endemic to Queensland, Australia. It is an erect shrub with most parts covered with star-like hairs and has simple, linear to narrow elliptic leaves, and pink to white, four-petalled flowers.

<i>Boronia squamipetala</i> Species of flowering plant

Boronia squamipetala is a species of plant in the citrus family, Rutaceae, and is endemic to Queensland, Australia. It is an erect shrub with pinnate leaves with between five and thirteen elliptic leaflets, and green to white, four-petalled flowers with hairy backs.

<i>Boronia suberosa</i> Species of flowering plant

Boronia suberosa is a species of plant in the citrus family Rutaceae and is endemic to a small area in the Northern Territory, Australia. It is a shrub with weeping branches, simple leaves, and flowers with four small, white petals.

Boronia zeteticorum is a species of small, semi-prostrate shrub that is endemic to a restricted part of the Northern Territory. It has hairy branches, leaves and flower parts, simple leaves and white flowers with the sepals longer and wider than the petals.

References

  1. "Boronia laxa". APC. Retrieved 29 March 2019.
  2. 1 2 Duretto, Marco F. (1999). "Systematics of Boronia section Valvatae sensu lato (Rutaceae)" (PDF). Muelleria. 12 (1): 98–99. Archived from the original (PDF) on 6 April 2020. Retrieved 7 February 2019.
  3. 1 2 "Boronia laxa". Northern Territory Government flora online. Retrieved 29 March 2019.
  4. "Boronia laxa". APNI. Retrieved 29 March 2019.
  5. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 353.