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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] At the time, it was somewhat controversial.
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 ...
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
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Allocasuarina nana is a spreading, dioecious or rarely monoecious shrub that typically grows to a height of 0.2–2 m (7.9 in – 6 ft 6.7 in). Its branchlets are more or less erect, up to 80 mm (3.1 in) long, the leaves reduced to erect, scale-like teeth 0.5–0.6 mm (0.020–0.024 in) long, arranged in whorls of four to six around the branchlets.
Allocasuarina paludosa is a spreading, monoecious or dioecious shrub that typically grows to a height of 0.3–4 m (1 ft 0 in – 13 ft 1 in). Its branchlets are more or less erect, up to 200 mm (7.9 in) long, the leaves reduced to erect or spreading, scale-like teeth 0.5–0.9 mm (0.020–0.035 in) long, arranged in whorls of six to eight around the branchlets.
Allocasuarina misera is a species of flowering plant in the family Casuarinaceae and is endemic to Victoria.It is a dioecious or monoecious shrub that has more or less erect branchlets up to 100 mm (3.9 in) long, the leaves reduced to scales in whorls of five to seven, the fruiting cones 9–16 mm (0.35–0.63 in) long containing winged seeds 4–6 mm (0.16–0.24 in) long.
Allocasuarina lehmanniana is a dioecious, or less commonly a monoecious shrub that typically grows to a height of 1.5–4 m (4 ft 11 in – 13 ft 1 in). Its branchlets are up to 120–200 mm (4.7–7.9 in) long (depending on subspecies), the leaves reduced to scale-like teeth 0.4–0.8 mm (0.016–0.031 in) long, arranged in whorls of six to eight around the branchlets.