Centipeda minima subsp. minima

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Prostrate to (rarely) erect annual or facultative perennial, spreading to c. 25 cm diam. and/or 20 cm high, rarely rooting from lower nodes; branches glabrescent to moderately cottony, if glabrescent then axils and young growing tips usually with some cottony hairs. Leaves ± kite-shaped, 3–12 (–27) mm long, 1.5–6(–11) mm wide, variably serrate to shallowly incised; surfaces glabrescent to densely cottony, with scattered resin droplets. Capitula hemispherical to subglobular at anthesis, 1.5–3(–3.5) mm diam., solitary, sessile or subsessile; involucral bracts obovate with erose membranous margins, c. 1 mm long; receptacle depressed-hemispherical; female florets 75–200, corollas 0.1–0.25 mm long; bisexual florets 10–20, corollas 0.3–0.4 mm long. Fruiting heads breaking up before stems senesce. Cypselas narrowly obcuneate, 0.7–1.1 mm long; ribs 4(–6) with short ascending bristles; intervening faces with scattered vesicular hairs; apex truncate or obtusely rimmed, forming a pale, pithy portion up to a half the cypsela length, very slightly impressed. Flowers Sep.–Feb.

CVU, DunT, EGL, GipP, Gold, GGr, HSF, MuF, MuM, MSB, NIS, VRiv, VVP. Occurs in all Australian States. Widespread through south-east Asia and the Pacific, e.g. India, Russia, China, Vietnam, Japan, Philippines, Indonesia, Papua New Guinea, New Caledonia, New Zealand. Scattered throughout the State on muds, clays and sands surrounding lakes, dams, billabongs, watercourses, or their drying beds. It is occasionally a weed of agricultural land.

The extreme measurements derive from plants growing in permanently moist, shaded sites, or rarely, from wholly submerged plants.

Plants from the sandy mallee areas of north-west Victoria can be moderately cottony. The name Centipeda minima var. lanuginosa has been applied to cottony plants of C. minima and C. nidiformis. However, indumentum density varies continuously in this species from being virtually non-existent to moderately cottony and consequently a clear demarcation in indumentum density that could define this taxon is lacking (Walsh 2001).

Created by: Daniel Ohlsen, 2015-09-18
Updated by: Neville Walsh, 2017-03-01
 
References

Walsh, N.G. (2001). A revision of Centipeda (Asteraceae), Muelleria 15: 33–64.

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

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Centipeda minima subsp. minima in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Centipeda minima subsp. minima in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Murray Mallee present native
Victorian Volcanic Plain present native
Victorian Riverina present native
Murray Scroll Belt present native
Murray Fans present native
Gippsland Plain present native
Goldfields present native
Central Victorian Uplands present native
Greater Grampians present native
Dundas Tablelands present native
Northern Inland Slopes present native
East Gippsland Lowlands present native
Highlands-Southern Fall present native

State distribution

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