A new subspecies of Acacia pentadenia (Leguminosae: Mimosoideae) from south-western Australia

摘要

Reid, J.E., Wardell-Johnson,G. & Maslin, B.R. Anew subspecies of Acacia pentadenia (Leguminosae: Mimosoideae) from south-western Australia. Nuytsia 19(2): 245-252 (2009). A previously recognised informal variant of Acacia pentadenia Lindl. is described following extensive field and herbarium studies focused on the forest region to the north-east of Walpole. The new subspecies, Acacia pentadenia subsp. syntoma, is most readily distinguished from subsp. pentadenia by a combination of morphological attributes, as well as habit, phenological and ecological differences. Field observations have shown the two subspecies to be occasionally sympatric. A key to the subspecies is provided together with a distribution map and comparative images.