Allocasuarina monilifera

Allocasuarina monilifera, commonly known as necklace sheoak,[2] is a species of flowering plant in the family Casuarinaceae and is endemic to Tasmania. It is usually a monoecious, low-growing shrub that has branchlets up to 150 mm (5.9 in) long, the leaves reduced to scales in whorls of six to nine, the fruiting cones 15–30 mm (0.59–1.18 in) long containing winged seeds 5–6 mm (0.20–0.24 in) long.

Allocasuarina monilifera
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fagales
Family: Casuarinaceae
Genus: Allocasuarina
Species:
A. monilifera
Binomial name
Allocasuarina monilifera
(L.A.S.Johnson) L.A.S.Johnson[1]
Occurrence data from AVH
Synonyms[1]
  • Casuarina monilifera L.A.S.Johnson
  • Casuarina sp. 4 p.p.
  • Casuarina distyla auct. non Vent.: Rodway, L. (1903)
Habit near Cape Tourville Lighthouse

Description

Allocasuarina monilifera is usually a monoecious shrub that typically grows to 0.5–4 m (1 ft 8 in – 13 ft 1 in) high and 1–4 m (3 ft 3 in – 13 ft 1 in) wide. Its branchlets are 150 mm (5.9 in) long, the leaves reduced to erect to slightly spreading, scale-like teeth 0.5–1 mm (0.020–0.039 in) long, arranged in whorls of six to nine around the branchlets. The sections of branchlet between the leaf whorls are 6–11 mm (0.24–0.43 in) long, 0.6–1.2 mm (0.024–0.047 in) wide and are slightly waxy. Male flowers are arranged in spikes 10–35 mm (0.39–1.38 in) long, the anthers 0.7–1.2 mm (0.028–0.047 in) long. Female cones are cylindrical, on a peduncle 2–10 mm (0.079–0.394 in) long. Mature cones are 15–30 mm (0.59–1.18 in) long and 8–14 mm (0.31–0.55 in) in diameter containing winged seeds 5–6 mm (0.20–0.24 in) long.[2][3][4]

Taxonomy

Necklace sheoak was first formally described in 1967 by Lawrie Johnson who gave it the name Casuarina monilifera The Student's Flora of Tasmamia from specimens he collected at Eaglehawk Neck in 1949.[5] In 1982, Johnson transferred the species to Allocasuarina as A. monilifera in the Journal of the Adelaide Botanic Gardens.[6][7] The specific epithet, (monilifera) means "necklace-bearing".[8]

Distribution and habitat

Allocasuarina monilifera grows in heath and woodland in dry coastal areas of northern and eastern Tasmania, on Flinders Island and the islands of the Kent Group in Bass Strait.[2][3][4][9]

References
  1. "Allocasuarina monilifera". Australian Plant Census. Retrieved 24 June 2023.
  2. "Allocasuarina monilifera - Casuarinaceae Necklace sheoak". Australian Plants Society Tasmania Inc. Archived from the original on 14 January 2017. Retrieved 12 January 2017.
  3. "Allocasuarina monilifera". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 24 June 2023.
  4. "Allocasuarina monilifera". Australian Plants Society Tasmania Inc. Retrieved 24 June 2023.
  5. "Casuarina monilifera". APNI. Retrieved 24 June 2023.
  6. "Allocasuarina monilifera". APNI. Retrieved 24 June 2023.
  7. Johnson, Lawrence A.S. (1982). "Notes on Casuarinaceae II". Journal of the Adelaide Botanic Gardens. 6 (1): 76. Retrieved 24 June 2023.
  8. Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 255. ISBN 9780958034180.
  9. Jordan, Greg. "Allocasuarina monilifera". University of Tasmania. Retrieved 24 June 2023.
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