Pimelea trichostachya Lindl.

Annual Rice-flower

in T.Mitch., J. Exped. Trop. Australia 355 (1848) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Semi-woody annual, 15–17 cm high; stems sparsely hairy when young. Leaves alternate or rarely almost opposite, shortly petiolate, narrowly elliptic or linear, 4–12 mm long, 0.5–2 mm wide, concolorous, usually pale green, sparsely hairy but becoming glabrous. Inflorescence terminal, initially head-like and c. 1 cm long and wide, but elongating in fruit to a distinct spike, usually to 5 (rarely to 15) cm long, many-flowered; involucral bracts absent or not differentiated from leaves. Flowers bisexual, densely white-hairy outside, glabrous inside; floral tube 3–5 mm long, style-portion shorter than ovary-portion, circumscissile above ovary, persistent base grey in fruit; sepals erect, c. 0.5 mm long; pedicel hairy; stamens inserted below sepals, almost sessile in throat; anthers opening somewhat laterally; style not or little exserted. Fruit dry, enclosed. Flowers Aug.–Dec.

LoM, MuF, MuM, MSB, RobP. Also WA, NT, SA, Qld, NSW. Grows on deep sand in mallee areas of the far north-west. Occurs in all mainland States.

The elongate and usually interrupted inflorescences with fluffy white flowers distinguish this taxon from other mallee species of Pimelea.

Source: Entwisle, T.J. (1996). Thymelaeaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne.
Updated by: Val Stajsic, 2018-10-05
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Rosanae
order Malvales
family Thymelaeaceae
genus Pimelea
Higher taxa


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

State distribution

Distribution map
Western Australia
Northern Territory
South Australia
New South Wales