Plants of
South Australia
Xerothamnella parvifolia
Acanthaceae
Freckled duck
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Regional Species Conservation Assessments per IBRA subregion.
Least concern
Near threatened
Rare
Vulnerable
Endangered
Critically endangered
Extinct
Data deficient
Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
Marla
Marree
Mount Gambier
Oodnadatta
Renmark
Wudinna
Keith
Yunta
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Etymology

Xerothamnella from the Greek 'xiros' meaning dry and 'thamnus' meaning shrub, referring to its twiggy appearance. Parvifolia from the Latin 'parvus' meaning small and 'folium' meaning a leaf, referring to the species having few small leaves.

Distribution and status

Restricted to one locality on the eastern side of the northern Flinders Ranges in South Australia, growing on skeletal clay soils on slopes above gullies. Also found in Queensland and New South Wales. Native. Very rare in South Australia. Very rare in the other states. Vulnerable in South Australia under the EPBC Act.
Herbarium region: Flinders Ranges
NRM region: South Australian Arid Lands
AVH map: SA distribution map (external link)

Plant description

Low woody and much branching shrub to 1 m high and wide. Leaves small and usually on the younger stems, stalkless, thick to 10 mm long and 3 mm wide. Flowers singly in the upper leaf axils, consisting of 4 white upper petals and 1 red lower petal. Flowering between November to January. Fruits are flat elongated papery capsule to 8 mm long, containing 1 to 2 seeds each. Seeds are flat brown, reniform seed to 4 mm long and 3 mm wide, covered in small tubercules. Seed embryo type is bent.

Seed collection and propagation

Collect seeds between February and April. Collect capsules that are maturing, drying off and turning brown. Green capsules can be collected if the seeds are hard and brown. Place the capsules in a paper bag or tray and allow to dry for 1 to 2 weeks. Gently rub the dried capsule by hand to dislodge the seeds. Use a sieve to separate the unwanted material. Store the seeds with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place. From one collection, the seed viability was high, at 90%. Seeds are non-dormant, viable seed should germinate readily without any treatment.

Germination table:
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