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The monophyly of these genera was later supported in a 2003 phylogenetic study of the family. [6] In the Wettstein system , this family was the only one placed in the order Verticillatae. Likewise, in the Engler , Cronquist , and Kubitzki systems , the Casuarinaceae were the only family placed in the order Casuarinales.
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 media is a dioecious, or rarely a monoecious shrub that typically grows to a height of 1–3 m (3 ft 3 in – 9 ft 10 in) and has smooth bark. Its branchlets are more or less erect, up to 200 mm (7.9 in) long, the leaves reduced to erect or slightly spreading, scale-like teeth about 0.5 mm (0.020 in) long, arranged in whorls of six to eight around the branchlets.
The genera Misophrice and Apion have also been recorded on Casuarina, but the nature of their associations is unknown. [13] Hemiptera: Casuarinicola jumping plant lice feed on sap of Casuarina. [15] Another hemipteran associated with this genus is the felt scale Choneochiton casuarinae (Eriococcidae). [16]
Male spikes Male cone. 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 (0.16–0.22 in) long.
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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 huegeliana, commonly known as rock sheoak [3] is a species of flowering plant in the family Casuarinaceae and is endemic to Western Australia. It is a dioecious tree that has its leaves reduced to scales in whorls of eight to ten, the mature fruiting cones 14–35 mm (0.55–1.38 in) long containing winged seeds (samaras) 5–7 mm (0.20–0.28 in) long.