Allocasuarina pinaster

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Allocasuarina pinaster
Allocasuarina pinaster.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fagales
Family: Casuarinaceae
Genus: Allocasuarina
Species:
A. pinaster
Binomial name
Allocasuarina pinaster
AllocasuarinapinasterDistributionMap40.png
Occurrence data from AVH
Habit near Lake Grace Allocasuarina pinaster habit.jpg
Habit near Lake Grace

Allocasuarina pinaster, commonly known as compass bush, [2] is a species of flowering plant in the family Casuarinaceae and is endemic to the south-west of Western Australia. It is a prickly, dioecious shrub resembling a pine tree and that has its leaves reduced to scales in whorls of four, the mature fruiting cones 14–25 mm (0.55–0.98 in) long, containing winged seeds 10–11 mm (0.39–0.43 in) long.

Contents

Description

Allocasuarina pinaster is a prickly, dioecious shrub that typically grows to a height of 1–3 m (3 ft 3 in – 9 ft 10 in) and resembles a small cedar. Its branchlets are 20–60 mm (0.79–2.36 in) long, the leaves reduced to scale-like teeth 0.4–1.3 mm (0.016–0.051 in) long, arranged in whorls of four around the needle-like branchlets. The sections of branchlet between the leaf whorls are mostly 20–50 mm (0.79–1.97 in) long, 1.0–1.2 mm (0.039–0.047 in) wide and more or less square in cross-section. Male flowers are arranged in spikes 5–10 mm (0.20–0.39 in) long, the anthers 1.0–1.4 mm (0.039–0.055 in) long. Female cones are sessile or on a peduncle up to 5 mm (0.20 in) long, the mature cones 14–25 mm (0.55–0.98 in) long and 12–16 mm (0.47–0.63 in) in diameter containing dark brown to black, winged seeds 10–11 mm (0.39–0.43 in) long. [2] [3]

Taxonomy

This sheoak was first formally described in 1943 by Charles Gardner who gave it the name Casuarina pinaster in the Journal of the Royal Society of Western Australia from specimens collected near Nyabing by William Blackall. [4] [5] It was reclassified in 1982 as Allocasuarina pinaster by Lawrie Johnson in the Journal of the Adelaide Botanic Gardens . [6] The specific epithet (pinaster) means "imitation pine". [7] Specimens of compass bush consistently lean in a southerly direction at an angle of 30°- 40° from vertical. [3]

Distribution and habitat

Allocasuarina pinaster grows in tall shrubland and heath in gravelly lateritic soils in the Hyden – Dumbleyung area in the Avon Wheatbelt, Esperance Plains and Mallee bioregions of south-western Western Australia. [2] [3]

Related Research Articles

<i>Allocasuarina lehmanniana</i> Species of flowering plant

Allocasuarina lehmanniana, commonly known as dune sheoak, is a species of flowering plant in the family Casuarinaceae and is endemic to near-coastal areas of the south-west of Western Australia. It is dioecious or less commonly a monoecious shrub that has its leaves reduced to scales in whorls of six to eight, the mature fruiting cones 12–35 mm (0.47–1.38 in) long containing winged seeds (samaras) 4.0–5.5 mm (0.16–0.22 in) long.

<i>Allocasuarina luehmannii</i> Species of tree

Allocasuarina luehmannii, commonly known as bull-oak or buloke or bull-oak, is a species of flowering plant in the family Casuarinaceae and is endemic to south-eastern continental Australia. It is a dioecious tree, that has its leaves reduced to scales in whorls of ten to fourteen, and the mature fruiting cones are 5–12 mm (0.20–0.47 in) long containing winged seeds (samaras) 4–5 mm (0.16–0.20 in) long.

<i>Allocasuarina littoralis</i> Species of tree

Allocasuarina littoralis, commonly known as black she-oak, is a species of flowering plant in the family Casuarinaceae and is endemic to eastern Australia. It is dioecious, or less commonly a monoecious tree or shrub, that has its leaves reduced to scales, usually in whorls of six to eight, the mature fruiting cones 10–30 mm (0.39–1.18 in) long containing winged seeds (samaras) 4.0–10 mm (0.16–0.39 in) long.

<i>Allocasuarina campestris</i> Species of flowering plant

Allocasuarina campestris is a species of flowering plant in the family Casuarinaceae and is endemic to the south-west of Western Australia. It is a dense, monoecious or dioecious shrub that has more or less erect branchlets, the leaves reduced to scales in whorls of seven to nine, the mature fruiting cones 19–42 mm (0.75–1.65 in) long containing winged seeds (samaras) 4.7–10 mm (0.19–0.39 in) long.

<i>Allocasuarina paludosa</i> Species of plant

Allocasuarina paludosa, commonly known as swamp she-oak or scrub sheoak, is a species of flowering plant in the family Casuarinaceae and is endemic to south-eastern continental Australia. It is a monoecious or dioecious shrub that has branchlets up to 200 mm (7.9 in) long, the leaves reduced to scales in whorls of six to eight, the fruiting cones 10–18 mm (0.39–0.71 in) long containing winged seeds 3.5–5.0 mm (0.14–0.20 in) long.

<i>Allocasuarina paradoxa</i> Species of plant

Allocasuarina paradoxa is a species of flowering plant in the family Casuarinaceae and is endemic to Victoria. It is a dioecious or monoecious shrub that has branchlets up to 150 mm (5.9 in) long, the leaves reduced to scales in whorls of seven to eleven, the fruiting cones 13–25 mm (0.51–0.98 in) long containing winged seeds 4–8 mm (0.16–0.31 in) long.

<i>Allocasuarina acutivalvis</i> Species of flowering plant

Allocasuarina acutivalvis is a species of flowering plant in the family Casuarinaceae and is endemic to the southwest of Western Australia. It is a dioecious shrub to small tree that has erect branchlets, the leaves reduced to scales in whorls of 10 to 14, the fruiting cones 15–35 mm (0.59–1.38 in) long containing winged seeds (samaras) 6–12 mm (0.24–0.47 in) long.

<i>Allocasuarina dielsiana</i> Species of flowering plant

Allocasuarina dielsiana, commonly known as northern sheoak, is a species of flowering plant in the family Casuarinaceae and is endemic to the south-west of Western Australia. It is a dioecious tree that has more or less erect branchlets, the leaves reduced to scales in whorls of six to eight, and the mature fruiting cones 14–30 mm (0.55–1.18 in) long containing winged seeds (samaras) 8–10 mm (0.31–0.39 in) long.

<i>Allocasuarina drummondiana</i> Species of flowering plant

Allocasuarina drummondiana is a species of flowering plant in the family Casuarinaceae and is endemic to the south-west of Western Australia. It is an intricately branched, dioecious shrub that has its leaves reduced to scales in whorls of six or seven, the mature fruiting cones 8–15 mm (0.31–0.59 in) long containing winged seeds (samaras) 3–4 mm (0.12–0.16 in) long.

<i>Allocasuarina eriochlamys</i> Species of flowering plant

Allocasuarina eriochlamys is a species of flowering plant in the family Casuarinaceae and is endemic to inland areas of Western Australia. It is a dense, erect, monoecious or dioecious shrub that has more or less erect branchlets, its leaves reduced to scales in whorls of eight to ten, the mature fruiting cones 20–45 mm (0.79–1.77 in) long containing winged seeds (samaras) 5.0–10.5 mm (0.20–0.41 in) long.

<i>Allocasuarina fibrosa</i> Species of flowering plant

Allocasuarina fibrosa, commonly known as woolly sheoak, is a species of flowering plant in the family Casuarinaceae and is endemic to the south-west of Western Australia. It is a dioecious shrub that has branchlets 20–50 mm (0.79–1.97 in) long, the leaves reduced to scales in whorls of four, and the mature fruiting cones 11–25 mm (0.43–0.98 in) long containing winged seeds (samaras) 6–7 mm (0.24–0.28 in) long.

<i>Allocasuarina grevilleoides</i> Species of flowering plant

Allocasuarina grevilleoides is a species of flowering plant in the family Casuarinaceae and is endemic to the south-west of Western Australia. It is a small, spreading, dioecious shrub that forms a lignotuber, and has more or less erect, sharply-pointed branchlets, the leaves reduced to scales in whorls of four, the mature fruiting cones 9–14 mm (0.35–0.55 in) long containing winged seeds (samaras) 5.5–7.0 mm (0.22–0.28 in) long.

<i>Allocasuarina ramosissima</i> Species of flowering plant

Allocasuarina ramosissima is a species of flowering plant in the family Casuarinaceae and is endemic to the south-west of Western Australia. It is a dioecious shrub with its leaves reduced to overlapping scales in whorls of five, the mature fruiting cones sessile and 9–13 mm (0.35–0.51 in) long, containing winged seeds 4.5–5.0 mm (0.18–0.20 in) long.

<i>Allocasuarina scleroclada</i> Species of flowering plant

Allocasuarina scleroclada is a species of flowering plant in the family Casuarinaceae and is endemic to areas along the south coast of Western Australia. It is a straggly, dioecious shrub that has branchlets up to 230 mm (9.1 in) long, the leaves reduced to scales in whorls of ten or eleven, the mature fruiting cones 18–25 mm (0.71–0.98 in) long containing winged seeds 5–8 mm (0.20–0.31 in) long.

<i>Allocasuarina spinosissima</i> Species of flowering plant

Allocasuarina spinosissima is a species of flowering plant in the family Casuarinaceae and is endemic to Western Australia. It is a monoecious shrub with its leaves reduced to overlapping scales in whorls of nine to eleven, the mature fruiting cones 10–23 mm (0.39–0.91 in) long, containing winged seeds 5.5–7.0 mm (0.22–0.28 in) long.

Allocasuarina tessellata is a species of flowering plant in the family Casuarinaceae and is endemic to the south-west of Western Australia. It is a dioecious shrub or tree that has more or less erect branchlets, the leaves reduced to scales in whorls of eight or nine, the mature fruiting cones 26–55 mm (1.0–2.2 in) long containing winged seeds 5.0–7.5 mm (0.20–0.30 in) long.

<i>Allocasuarina thuyoides</i> Species of flowering plant

Allocasuarina thuyoides, commonly known as horned sheoak, is a species of flowering plant in the family Casuarinaceae and is endemic to the south-west of Western Australia. It is monoecious or dioecious shrub that has its leaves reduced to scales in whorls of five or six, the mature fruiting cones 8–20 mm (0.31–0.79 in) long containing winged seeds usually 5.0–6.0 mm (0.20–0.24 in) long.

<i>Allocasuarina muelleriana</i> Species of plant

Allocasuarina muelleriana, commonly known as slaty sheoak, is a species of flowering plant in the family Casuarinaceae and is endemic to southern continental Australia. It is a dioecious, rarely a monoecious shrub that has branchlets up to 120 mm (4.7 in) long, the leaves reduced to scales in whorls of five to eight, the fruiting cones 14–30 mm (0.55–1.18 in) long containing winged seeds 6–9 mm (0.24–0.35 in) long.

<i>Allocasuarina pusilla</i> Species of plant

Allocasuarina pusilla, commonly known as heath oak-bush or dwarf sheoak, is a species of flowering plant in the family Casuarinaceae and is endemic to south-eastern continental Australia. It is a spreading, dioecious shrub with branchlets up to 120 mm (4.7 in) long, the leaves reduced to scales in whorls of five to seven, the fruiting cones 10–15 mm (0.39–0.59 in) long containing winged seeds about 5 mm (0.20 in) long.

<i>Allocasuarina robusta</i> Species of plant

Allocasuarina robusta, commonly known as Mount Compass oak-bush, is a species of flowering plant in the family Casuarinaceae and is endemic to a restricted area of South Australia. It is a monoecious, rarely a dioecious shrub with erect branchlets up to 200 mm (7.9 in) long, the leaves reduced to scales in whorls of five to seven, the fruiting cones 12–20 mm (0.47–0.79 in) long containing winged seeds about 5.5–6.0 mm (0.22–0.24 in) long.

References

  1. ↑ "Allocasuarina pinaster". Australian Plant Census. Retrieved 2 August 2023.
  2. 1 2 3 "Allocasuarina pinaster". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. 1 2 3 "Allocasuarina pinaster". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 2 August 2023.
  4. ↑ "Casuarina pinaster". APNI. Retrieved 2 August 2023.
  5. ↑ Gardner, Charles A. (1943). "Contributiones Florae Australiae Occidentalis, XI". Journal of the Royal Society of Western Australia. 27: 166–167. Retrieved 2 August 2023.
  6. ↑ "Allocasuarina pinaster". APNI. Retrieved 2 August 2023.
  7. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 278. ISBN   9780958034180.
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