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At one time, all species were placed in the genus Casuarina. Lawrence Alexander Sidney Johnson separated out many of those species and renamed them into the new genera of Gymnostoma in 1980 and 1982, [3] [4] Allocasuarina in 1982, [4] and Ceuthostoma in 1988, with some additional formal descriptions of new species in each other genus. [5]
The genera Allocasuarina was created out of a grouping of plants formerly placed in Casuarina, because of subtle but consistent differences – Casuarina species have 6 to 20 scale-like teeth in each whorl of leaves, their samaras are grey or yellowish-brown, and the bracteoles of the fruiting cones are thin, woody and extend well beyond the ...
Bentham gave it the name Casuarina decussata. [5] [6] In 1982, Lawrie Johnson moved it to its current genus Allocasuarina in his revision of the she-oaks. [7] It is closely related to A. torulosa of New South Wales and Queensland. [2] The specific epithet decussata is a Latin word meaning 'like the letter X' or 'the Roman numeral ten'. [8]
Allocasuarina zephyrea is a species of flowering plant in the family Casuarinaceae and is endemic to Tasmania. It is a dioecious shrub that has branchlets up to 190 mm (7.5 in) long, the leaves reduced to scales in whorls of seven to nine or ten, the fruiting cones 10–25 mm (0.39–0.98 in) long containing winged seeds 4.0–5.5 mm (0.16–0. ...
Immature female cones. 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.
Allocasuarina thalassoscopica is a species of flowering plant in the family Casuarinaceae and is endemic to eastern Australia. It is a spreading to erect, dioecious shrub that has branchlets up to 180 mm (7.1 in) long, the leaves reduced to scales in whorls of five to seven, the fruiting cones 12–28 mm (0.47–1.10 in) long containing winged ...
Allocasuarina grampiana is a dioecious shrub that typically grows to a height of 1–4 m (3 ft 3 in – 13 ft 1 in) and has smooth bark. Its branchlets are more or less erect, up to 150 mm (5.9 in) long, the leaves reduced to erect to slightly spreading, scale-like teeth 0.4–0.8 mm (0.016–0.031 in) long, arranged in whorls of six or seven around the branchlets.
Allocasuarina striata, commonly known as the small bull oak, [1] stalked oak-bush [2] or the tall oak-bush, is a shrub of the genus Allocasuarina native to South Australia. [ 3 ] Description