Cassinia arcuata R.Br.

Trans. Linn. Soc. London 12: 128 (1817) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: rare (r)

Odourless or slightly aromatic small tree or more often a shrub, 1.0–2.0(–4.0) m high; branchlets with a dense but loosely cottony, sometimes with occasional emergent multicellular hairs. Leaves spreading, sessile, linear, (2.5–)5–10(–12) mm long, 0.7 mm wide, sparsely cottony becoming glabrous and shining above, cottony beneath, apex rounded with a reflexed apiculum, margins revolute. Inflorescence pyramidal, c. 1.5–8 cm long, 1–5 cm wide. Capitula c. 100–200, yellowish-green or greenish-bronze when fresh, drying white, aging to ochre, narrowly cylindrical in bud, becoming obconical at maturity, 3.5–4.0 mm long, c. 1 mm wide; involucral bracts 13–18, innermost with brown stereome and clear hyaline with an opaque white tip, often with incurved margins; florets (2 or) 3. Cypsela cylindric, 0.8–1.0 mm long, sparsely papillose; pappus bristles 2–3 mm long, apex tapering. Flowers (Sep.) Mar.–May.

Gold, LoM. Currently known with certainty from a single population near Patchewollock in the north-west, but historically extending to near the Grampians. Also SA and WA.  Recorded from shrubland with Acacia, Callitris and chenopods.

Distinguished from other species of Cassinia in Victoria by a combination of an inflorescence that has a height equal to or longer than its width and white corolla lobes.

The similar species recently described as Cassinia sifton that is widespread and is common in central  and north-central Victoria, was previously included within Cassinia arcuata and virtually all Victorian records of C. arcuata prior to 2017 will refer to that species.

The mapped distribution here is based on the only reliably determined specimens at MEL (Patchewollock area, 2004). Older specimens of the species are yet to be added to the distributional database.

Source: Puttock, C.F. (1999). Cassinia. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 4, Cornaceae to Asteraceae. Inkata Press, Melbourne.
Updated by: Val Stajsic, 2018-04-26
 
References

Orchard, A.E. (2017). A revision of Cassinia (Asteraceae: Gnaphalieae) in Australia. 7. Cassinia subgenus Achromolaena, Australian Systematic Botany 30(4): 337-370.

Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
order Asterales
family Asteraceae
genus Cassinia
Higher taxa

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Cassinia arcuata in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Cassinia arcuata in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present native
Goldfields present native

State distribution

Distribution map
State
Western Australia
South Australia
Queensland
New South Wales
Australian Capital Territory
Victoria
Tasmania