Allocasuarina tortiramula

Last updated

Allocasuarina tortiramula
Allocasuarina tortiramula.jpg
In Kings Park
Status DECF R.svg
Declared rare  (DEC) [1]
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. tortiramula
Binomial name
Allocasuarina tortiramula

Allocasuarina tortiramula, commonly known as twisted sheoak, [1] is a species of flowering plant in the family Casuarinaceae and is endemic to a restricted area in the south-west of Western Australia. It is a dioecious shrub that has spreading, twisted branchlets, the leaves reduced to scales in whorls of seven, the mature fruiting cones 10–15 mm (0.39–0.59 in) long containing winged seeds 5.5–6.0 mm (0.22–0.24 in) long.

Contents

Description

Allocasuarina tortiramula is a dioecious shrub that typically grows to a height of up to about 1.7 m (5 ft 7 in). Its branchlets are spreading and twisted, up to about 100 mm (3.9 in) long, the leaves reduced to scale-like teeth arranged in whorls of seven, around the branchlets. The sections of branchlet between the leaf whorls are 6–10 mm (0.24–0.39 in) long and 0.8–1 mm (0.031–0.039 in) wide. Male flowers are arranged in dense spikes 5–9 mm (0.20–0.35 in) long, the anthers 1.1–1.2 mm (0.043–0.047 in) long. Female cones are sessile, mature cones 10–15 mm (0.39–0.59 in) long and about 10 mm (0.39 in) in diameter, the winged seeds brown and 5.5–6.0 mm (0.22–0.24 in) long. [1] [3]

Taxonomy

Allocasuarina tortiramula was first formally described in 1989 by Eleanor Marion Bennett in the Flora of Australia from specimens collected near Lake King in 1987. [4] [5] The specific epithet (tortiramula) means "twisted branchlet". [5]

Distribution and habitat

Twisted sheoak is only known from two populations growing in and near a nature reserve to the west of Lake King, where it grows in dense, tall heath. [1] [3]

Conservation status

Allocasuarina tortiramula is listed as "threatened" in Western Australia. [1]

Related Research Articles

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

Allocasuarina huegeliana, commonly known as rock sheoak is a species of flowering plant in the family Casuarinaceae and is endemic to Western Australia. It is a dioecious tree that has its leaves reduced to scales in whorls of eight to ten, the mature fruiting cones 14–35 mm (0.55–1.38 in) long containing winged seeds (samaras) 5–7 mm (0.20–0.28 in) long.

<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 humilis</i> Species of flowering plant

Allocasuarina humilis, commonly known as dwarf sheoak, is a species of flowering plant in the family Casuarinaceae and is endemic to the south-west of Western Australia. It is an erect or spreading dioecious or monoecious shrub that has its leaves reduced to scales in whorls of five to seven, the mature fruiting cones 12–22 mm (0.47–0.87 in) long containing winged seeds (samaras) 5–6 mm (0.20–0.24 in) long.

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

Allocasuarina nana, commonly known as dwarf she-oak or as stunted sheoak, is a species of flowering plant in the family Casuarinaceae and is endemic to south-eastern continental Australia. It is a low, spreading dioecious, rarely monoecious shrub that has branchlets up to 80 mm (3.1 in) long, the leaves reduced to scales in whorls of four to six, the fruiting cones 14–24 mm (0.55–0.94 in) long containing winged seeds 4–6 mm (0.16–0.24 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 grampiana</i> Species of flowering plant

Allocasuarina grampiana, commonly known as Grampians sheoak, is a species of flowering plant in the family Casuarinaceae and is endemic to the Grampians National Park in Victoria. It is a dioecious shrub that has branchlets up to 150 mm (5.9 in) long, the leaves reduced to scales in whorls of six or seven, the fruiting cones 13–35 mm (0.51–1.38 in) long containing winged seeds (samaras) about 5 mm (0.20 in) long.

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

Allocasuarina corniculata is a species of flowering plant in the family Casuarinaceae and is endemic to the south-west of Western Australia. It is an erect to spreading, dioecious shrub that has more or less erect branchlets, the leaves reduced to scales in whorls of six to eleven, 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 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 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.

Allocasuarina globosa is a species of flowering plant in the family Casuarinaceae and is endemic to a restricted part of inland Western Australia. It is a dioecious shrub that has more or less erect branchlets, its leaves reduced to scales in whorls of ten to twelve, the mature fruiting cones more or less spherical and 15–17 mm (0.59–0.67 in) long, containing winged seeds (samaras) 6.0–6.5 mm (0.24–0.26 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 microstachya</i> Species of flowering plant

Allocasuarina microstachya is a species of flowering plant in the family Casuarinaceae and is endemic to the south-west of Western Australia. It is dioecious shrub that has its leaves reduced to scales in whorls of four, the mature fruiting cones 8–12 mm (0.31–0.47 in) long containing winged seeds 2.5–5.0 mm (0.098–0.197 in) long.

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

Allocasuarina pinaster, commonly known as compass bush, 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.

<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.

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 mackliniana</i> Species of flowering plant

Allocasuarina mackliniana 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 more or less erect branchlets up to 200 mm (7.9 in) long, the leaves reduced to scales in whorls of seven to ten, the fruiting cones 12–22 mm (0.47–0.87 in) long containing winged seeds (samaras) 5–8 mm (0.20–0.31 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.

References

  1. 1 2 3 4 5 "Allocasuarina tortiramula". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  2. "Allocasuarina tortiramula". Australian Plant Census. Retrieved 16 August 2023.
  3. 1 2 "Allocasuarina tortiramula". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 16 August 2023.
  4. "Allocasuarina tortiramula". APNI. Retrieved 16 August 2023.
  5. 1 2 Bennett, Eleanor M.; George, Alex S. (1989). Flora of Australia (PDF). Canberra: Australian Biological Resources Study. pp. 190–191. Retrieved 17 August 2023.