Allocasuarina mackliniana

Allocasuarina mackliniana is a dioecious, or rarely a monoecious shrub that typically grows to a height of and has smooth bark. Its branchlets are more or less erect, up to long, the leaves reduced to spreading or curved, scale-like teeth long, arranged in whorls of seven to ten around the branchlets. The sections of branchlet between the leaf whorls (the "articles") are long, wide. Male flowers are arranged in thick, dense spikes long, the anthers long. Female cones are cylindrical and sessile or on a peduncle up to long. Mature cones are cylindrical, mostly long and in diameter, the samaras dark reddish-brown to black, and long. ==Taxonomy==

Allocasuarina mackliniana was first formally described in 1989 by Lawrie Johnson in the Flora of Australia from specimens collected near Lucindale in 1986. The specific epithet, (mackliniana) honours "Miss Ellen D. Macklin, of Adelaide". has articles long, eight or nine teeth, the "ribs" along the articles slightly rounded and the furrows between the ribs softly hairy. • Allocasuarina mackliniana L.A.S.Johnson subsp. mackliniana has articles long, seven to ten teeth, the "ribs" rounded, the furrows with minute, soft hairs. It is similar to A. paradoxa. • Allocasuarina mackliniana subsp. xerophila L.A.S.Johnson is intermediate between the other two subspecies, and has articles long, seven or eight teeth, the "ribs" nearly flat to slightly rounded and the furrows between the ribs softly hairy when young. ==Distribution and habitat==

This sheoak is found from the southern Mount Lofty Ranges in South Australia to western Victoria. Subspecies hirtlinea grows in woodland and is restricted to the western parts of the Grampians National Park. Subspecies mackliniana grows in heath from the southern Mount Lofty Ranges to Portland in Victoria and subsp. xerophila grows in heath from near Pinnaroo and Keith in South Australia to the Wyperfield and Little Desert National Parks in Victoria. ==References==