Species of plant
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Philotheca difformis is a species of flowering plant in the family Rutaceae and is endemic to continental eastern Australia. It is a shrub with variably-shaped leaves depending on subspecies, and white flowers arranged singly or in groups of up to four on the ends of the branchlets. Subspecies "difformis" is commonly known as the small-leaf wax-flower.
Description.
"Philotheca difformis" is a shrub that grows to a height of about and has glandular-warty branchlets. The leaves are fleshy, glabrous, glandular warty on a short petiole but vary in size and shaped depending on subspecies. Subspecies "difformis" has fleshy leaves that are more or less cylindrical, about long and wide and subspecies "smithiana" has leaves that are flat, more or less egg-shaped, about long and wide. The flowers are borne singly or in clusters of two to four on the ends of the branchlets, each flower on a pedicel long. There are five fleshy triangular sepals and five oblong white petals long with a thick midrib. The ten stamens are woolly-hairy. Flowering occurs sporadically throughout the year and the fruit is about long, warty and beaked.
Taxonomy and naming.
This species was first formally described in 1837 by Stephan Endlicher from an unpublished description by Allan Cunningham who gave it the name "Eriostemon difformis". Endlicher published the description in "Enumaratio plantarum". Cunningham collected the type specimens in "sterile country on the Lachlan River" on 24 May 1817, during John Oxley's first expedition.
In 1998, Wilson changed the name to "Philotheca difformis" in the journal "Nuytsia" and described two subspecies:
Distribution and habitat.
"Philotheca difformis" subspecies "difformis" grows in rocky areas in woodland, mainly in inland parts of south-east Queensland, inland New South Wales, north-west Victoria and the Flinders Ranges in South Australia.
Subspecies "smithiana" often grows on rock outcrops and is found near the coast in south-east Queensland and in north-eastern New South Wales as far south as Singleton.
References.
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