Allocasuarina grevilleoides

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Allocasuarina grevilleoides
Allocasuarina grevilleoides female plant (5066903396).jpg
Female cones
Status DECF P3.svg
Priority Three — Poorly Known Taxa (DEC)
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. grevilleoides
Binomial name
Allocasuarina grevilleoides
Synonyms [1]

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.

Contents

Description

Allocasuarina campestris is a spreading dioecious shrub that typically grows to a height of 15–30 cm (5.9–11.8 in). Its branchlets are more or less erect and sharply pointed, 10–30 mm (0.39–1.18 in) long, the leaves reduced to erect, overlapping, scale-like teeth 0.3–0.6 mm (0.012–0.024 in) long, arranged in whorls of four around the branchlets, but withering as they age. The sections of branchlet between the leaf whorls (the "articles") are 10–24 mm (0.39–0.94 in) long and 0.5–0.8 mm (0.020–0.031 in) wide. Male flowers are arranged in dense spikes 2–5 mm (0.079–0.197 in) long, the anthers 0.6–0.7 mm (0.024–0.028 in) long. Female cones are oval and sessile, the mature cones 9–14 mm (0.35–0.55 in) long and 6–9 mm (0.24–0.35 in) in diameter, the samaras dark brown and 5.5–7.0 mm (0.22–0.28 in) long. [2] [3]

Taxonomy

This sheoak was first formally described in 1904 by the botanist Ludwig Diels who gave it the name Casuarina grevilleoides in Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie . [4] [5] It was reclassified in 1982 into the genus Allocasuarina as A. grevilleoides by Lawrie Johnson in the Journal of the Adelaide Botanic Gardens . [6]

Distribution and habitat

Allocasuarina grevilleoides is restricted to the Jurien Bay-Mogumber area in the Avon Wheatbelt, Geraldton Sandplains, Jarrah Forest and Swan Coastal Plain bioregions of south-western Western Australia.

Conservation status

This allocasuarina is listed as "Priority Three" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions, [3] meaning that it is poorly known and known from only a few locations but is not under imminent threat. [7]

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Related Research Articles

<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 defungens</i> Species of tree

Allocasuarina defungens, commonly known as dwarf heath casuarina, is a species of flowering plant in the family Casuarinaceae and is endemic to a restricted area of New South Wales. It is a straggly, dioecious or monoecious shrub that has branchlets up to 120 mm (4.7 in) long, the leaves reduced to scales in whorls of five to seven, the fruiting cones 8–11 mm (0.31–0.43 in) long containing winged seeds (samaras) about 3 mm (0.12 in) long.

<i>Grevillea asteriscosa</i> Species of shrub in the family Proteaceae endemic to the south-west region of Western Australia

Grevillea asteriscosa, commonly known as star-leaf grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a shrub with widely-spreading branches, star-shaped leaves with sharply-pointed lobes, and bright red flowers.

<i>Isopogon alcicornis</i> Species of shrub that is endemic to the south coast of Western Australia

Isopogon alcicornis, commonly known as the elkhorn coneflower, is a plant in the family Proteaceae and is endemic to part of the South Coast Western Australia. It is a low shrub with pinnately-lobed leaves and oval heads of hairy, white or pink flowers.

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

Allocasuarina acuaria is a species of flowering plant in the family Casuarinaceae and is endemic to the southwest of Western Australia. It is a dioecious shrub that has erect branchlets, the leaves reduced to scales in whorls of four on the ends of the branchlets, the fruiting cones 15–19 mm (0.59–0.75 in) long containing winged seeds (samaras) about 6 mm (0.24 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 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.

<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.

Grevillea eremophila is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect shrub with leathery, linear to narrowly egg-shaped leaves with the narrower end towards the base, and creamy-white flowers.

<i>Grevillea incrassata</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea incrassata is a species of flowering plant in the family Proteaceae and is endemic to inland south-western Western Australia. It is an erect shrub with crowded cylindrical or narrowly linear leaves and clusters of bright yellow flowers.

Grevillea incurva is a species of flowering plant in the family Proteaceae and is endemic to inland south-western Western Australia. It is an erect shrub with linear adult leaves and clusters of creamy-yellow flowers.

<i>Grevillea oncogyne</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea oncogyne is a species of flowering plant in the family Proteaceae and is endemic to inland areas of Western Australia. It is an erect to spreading shrub with linear, sometimes lobed leaves, and clusters of red or pinkish red flowers.

<i>Grevillea phanerophlebia</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea phanerophlebia, commonly known as the prominent vein grevillea and the vein leaf grevillea, is a species of flowering plant in the family Proteaceae and is endemic to a restricted part of the south-west of Western Australia. It is an erect, spreading or straggly shrub with divided leaves, the lobes linear, and white and cream-coloured to yellow flowers.

<i>Grevillea uncinulata</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea uncinulata, also known as hook-leaf grevillea, is species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect, open shrub with linear to elliptic leaves arranged in clusters along the branches, and small clusters of white flowers, the style with a yellow, orange or red tip.

<i>Hibbertia silvestris</i> Species of flowering plant

Hibbertia silvestris is a species of flowering plant in the family Dilleniaceae and is endemic to the south-west of Western Australia. It is a prostrate to more or less erect or spreading shrub with hairy young branchlets, elliptic to egg-shaped leaves with the narrower end towards the base and yellow flowers with seven to ten stamens on one side of two softly-hairy carpels.

Grevillea ceratocarpa is a species of flowering plant in the family Proteaceae and is endemic to inland areas of the south-west of Western Australia. It is an erect or spreading shrub with softly-hairy, narrowly elliptic or narrowly egg-shaped leaves with the narrower end towards the base, and creamy-white flowers.

Ricinocarpos stylosus is a species of flowering plant in the family Euphorbiaceae and is endemic to the Norseman district of Western Australia. It is a spreading, rounded, monoecious or dioeceous shrub or small tree, with linear to narrowly oblong leaves and female flowers arranged singly, or with two to five male flowers, or a single female flower surrounded by up to four male flowers.

References

  1. 1 2 "Allocasuarina grevilleoides". Australian Plant Census. Retrieved 4 June 2023.
  2. ↑ "Allocasuarina grevilleoides". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 4 June 2023.
  3. 1 2 "Allocasuarina grevilleoides". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. ↑ "Casuarina grevilleoides". APNI. Retrieved 4 June 2023.
  5. ↑ Diels, Ludwig (1904). "Fragmenta Phytographiae Australiae occidentalis. Beitrage zur Kenntnis der Pflanzen Westaustraliens, ihrer Verbreitung und ihrer Lebensverhaltnisse". Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie. 35 (1): 130. Retrieved 4 June 2023.
  6. ↑ "Allocasuarina grevilleoides". APNI. Retrieved 4 June 2023.
  7. ↑ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 4 June 2023.
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