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Gackstroemia aff. alpina is primarily an alpine to
subalpine species. The specific status of G. alpina in
Tasmania is as yet unverified but there are a number of Tasmanian
collections closely fitting the published description of G.
alpina in the literature.
G. alpina differs from the more common
G. weindorferi in a number of ways. Firstly, it is almost always
prostrate and creeping tightly to the substrate. Secondly, it is
much smaller and only once pinnate. Thirdly, G. alpina is also always sterile.
Microscopically also, the stem cortex of G. alpina is composed of
only 1-2 layers of cells whereas those of G. weindorferi has 3-4
layers.
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University of Tasmania