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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 ...
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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
Allocasuarina crassa is a dioecious or monoecious shrub that typically grows to a height of 1–2 m (3 ft 3 in – 6 ft 7 in), or sometimes a small tree to 14 m (46 ft), and has smooth bark. Its branchlets are spreading to more or less erect, up to 170 mm (7 in) long, the leaves reduced to erect, scale-like teeth 1.1–3 mm (0.04–0.1 in) long ...
Allocasuarina diminuta is a dioecious or monoecious shrub or small tree that typically grows to a height of 1–5 m (3 ft 3 in – 16 ft 5 in) and has smooth bark. . Its branchlets are more or less erect, up to 230 mm (9.1 in) long, the leaves reduced to erect to spreading, scale-like teeth 0.3–0.8 mm (0.012–0.031 in) long, arranged in whorls of six to ten around the branchl
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.