Following a morphometric and cladistic analysis of the
Daviesia ulicifolia Andrews group (Chandler and Crisp
1997), a new species, D. sejugata, is described. It
occurs disjunctly in eastern Tasmania and southern Yorke Peninsula, South
Australia, and is closely related to D. arthropoda
F.Muell., differing in a generally more robust habit, thicker fleshy
phyllodes, and larger flowers. Even with this species removed from
D. ulicifolia, the latter varies considerably over a
wide geographic, edaphic and altitudinal range.
Daviesia ulicifolia is divided into six subspecies based
on distinct phenetic and phylogenetic groups delimited in the earlier study.
These are subsp. aridicola (glaucous plants in arid
regions), subsp. incarnata (reddish-flowered plants in
the Mt Lofty Range, South Australia), subsp. ruscifolia
(plants with ovate-acuminate leaves and orange flowers in Victoria and
southern New South Wales (NSW), often at high altitude), subsp.
stenophylla (a narrow-leaved form in northern NSW and
Queensland), subsp. pilligensis (ovate-leaved plants on
sandy soil in western NSW), and subsp. ulicifolia (a
paraphyletic residual from south-eastern states).